GraphQL Connector for CData Sync

Build 23.0.8839
  • GraphQL
    • Establishing a Connection
    • Modeling GraphQL Data
      • Automatic Schema Discovery
      • Using Mutations
      • Customizing Schemas
        • Column Definitions
        • SELECT Execution
        • Operations
          • OAuthGetAccessToken
          • OAuthGetUserAuthorizationURL
    • Connection String Options
      • Authentication
        • AuthScheme
        • URL
        • User
        • Password
      • AWS Authentication
        • AWSCognitoRegion
        • AWSUserPoolId
        • AWSUserPoolClientAppId
        • AWSUserPoolClientAppSecret
      • OAuth
        • OAuthVersion
        • OAuthClientId
        • OAuthClientSecret
        • OAuthGrantType
        • OAuthIncludeCallbackURL
        • OAuthAuthorizationURL
        • OAuthAccessTokenURL
        • OAuthRefreshTokenURL
        • OAuthRequestTokenURL
        • AuthToken
        • AuthKey
        • OAuthParams
      • JWT OAuth
        • OAuthJWTCert
        • OAuthJWTCertType
        • OAuthJWTCertPassword
        • OAuthJWTCertSubject
      • SSL
        • SSLClientCert
        • SSLClientCertType
        • SSLClientCertPassword
        • SSLClientCertSubject
        • SSLServerCert
      • Firewall
        • FirewallType
        • FirewallServer
        • FirewallPort
        • FirewallUser
        • FirewallPassword
      • Proxy
        • ProxyAutoDetect
        • ProxyServer
        • ProxyPort
        • ProxyAuthScheme
        • ProxyUser
        • ProxyPassword
        • ProxySSLType
        • ProxyExceptions
      • Logging
        • LogModules
      • Schema
        • Location
        • BrowsableSchemas
        • Tables
        • Views
        • ExpandArgumentsDepth
        • ExpandTablesDepth
        • ExpandTemporaryTablesDepth
        • ExpandColumnsDepth
        • IncludeDeprecatedMetadata
        • ExposeDynamicProcedures
      • Miscellaneous
        • CustomHeaders
        • GenerateSchemaFiles
        • MaxRows
        • Other
        • Pagesize
        • PseudoColumns
        • Timeout
        • UserDefinedViews

GraphQL Connector for CData Sync

Overview

The CData Sync App provides a straightforward way to continuously pipeline your GraphQL data to any database, data lake, or data warehouse, making it easily available for Analytics, Reporting, AI, and Machine Learning.

The GraphQL connector can be used from the CData Sync application to pull data from GraphQL and move it to any of the supported destinations.

GraphQL Version Support

The Sync App leverages the GraphQL API to enable bidirectional access to GraphQL.

GraphQL Connector for CData Sync

Establishing a Connection

Adding a Connection to GraphQL

To add a connection to GraphQL:

  1. In the application console, navigate to the Connections page.
  2. At the Add Connections panel, select the icon for the connection you want to add.
  3. If the GraphQL icon is not available, click the Add More icon to download and install the GraphQL connector from the CData site.

For required properties, see the Settings tab.

For connection properties that are not typically required, see the Advanced tab.

Connecting to GraphQL

Set the following to connect:

  • URL: Specify the URL of the GraphQL service, for example https://api.example.com/graphql.
  • Location: Set this to the file path containing any custom defined schemas for the GraphQL service.

Authenticating to GraphQL

The driver supports the following types of authentication:

  • Basic
  • OAuth 1.0 & 2.0
  • OAuthPKCE
  • AWS Cognito Credentials:
    • AwsCognitoSrp
    • AwsCognitoBasic

Basic

Set AuthScheme to Basic. You must specify the User and Password of the GraphQL service.

OAuth

In all OAuth flows, you must set AuthScheme to OAuth and OAuthVersion to 1.0 or 2.0. The following sections assume you have done so.

Headless Machines

To create GraphQL data sources on headless servers or other machines on which the Sync App cannot open a browser, you need to authenticate from another machine. Authentication is a two-step process.

  1. Choose one of two options:
    • Option 1: Obtain the OAuthVerifier value as described in "Obtain and Exchange a Verifier Code" below.
    • Option 2: Install the Sync App on a machine with an internet browser and transfer the OAuth authentication values after you authenticate through the usual browser-based flow, as described in "Transfer OAuth Settings" below.
  2. Then configure the Sync App to automatically refresh the access token on the headless machine.

Option 1: Obtain and Exchange a Verifier Code

Set the following properties on the headless machine:

  • InitiateOAuth: Set this to OFF.
  • OAuthClientId: Set this to the application Id in your application settings.
  • OAuthClientSecret: Set this to the application secret in your application settings.

You can then follow the steps below to authenticate from another machine and obtain the OAuthVerifier connection property.

  1. Call the GetOAuthAuthorizationURL stored procedure with the CallbackURL input parameter set to the exact Redirect URI you specified in your application settings.
  2. Save the value of the returned AuthToken and AuthKey if OAuthVersion is set to 1.0. They are used in the next step.
  3. Open the returned URL in a browser. Log in and grant permissions to the Sync App. You are then redirected to the callback URL, which contains the verifier code.
  4. Save the value of the verifier code. Later, you must set this in the OAuthVerifier connection property.

On the headless machine, set the following connection properties to obtain the OAuth authentication values:

  • OAuthRequestTokenURL: Required for OAuth 1.0. In OAuth 1.0 this is the URL where the application makes a request for the request token.
  • OAuthAuthorizationURL: Required for OAuth 1.0 and 2.0. This is the URL where the user logs into the service and grants permissions to the application. In OAuth 1.0 if permissions are granted the request token is authorized.
  • OAuthAccessTokenURL: Required for OAuth 1.0 and 2.0. This is the URL where the request for the access token is made. In OAuth 1.0 the authorized request token is exchanged for the access token.
  • OAuthRefreshTokenURL: Required for OAuth 2.0. In OAuth 2.0 this is the URL where the refresh token is exchanged for a new access token when the old one expires. Note that for your data source this may be the same as the access token URL.
  • OAuthClientId: Set this to the client Id in your application settings.
  • OAuthClientSecret: Set this to the client secret in your application settings.
  • CallbackURL: Set this to http://localhost:33333. If you specified a redirect URL in your application settings, this must match.

Connect to Data

After the OAuth settings file is generated, set the following properties to connect to data:

  • OAuthSettingsLocation: Set this to the location containing the encrypted OAuth authentication values. Make sure this location gives read and write permissions to the provider to enable the automatic refreshing of the access token.
  • InitiateOAuth: Set this to REFRESH.

Option 2: Transfer OAuth Settings

Follow the steps below to install the Sync App on another machine, authenticate, and then transfer the resulting OAuth values.

On a second machine, install the Sync App and connect with the following properties set:

  • OAuthSettingsLocation: Set this to a writable location.
  • OAuthClientId: Set this to the Client Id in your application settings.
  • OAuthClientSecret: Set this to the Client Secret in your application settings.
  • CallbackURL: Set this to the Callback URL in your application settings.

Test the connection to authenticate. The resulting authentication values are written, encrypted, to the location specified by OAuthSettingsLocation. After you have successfully tested the connection, copy the OAuth settings file to your headless machine. On the headless machine, set the following connection properties to connect to data:

  • InitiateOAuth: Set this to REFRESH.
  • OAuthSettingsLocation: Set this to the location of your OAuth settings file. Make sure this location gives read and write permissions to the Sync App to enable the automatic refreshing of the access token.

OAuthPKCE

NOTE:OAuth Proof Key for Code Exchange (PKCE) is an extension to the OAuth 2.0 Authorization Code flow.

AWS Cognito Credentials

If you want to use the Sync App with a user registered in a User Pool in AWS Cognito, set the following properties to authenticate:

  • AuthScheme: Set this to AwsCognitoSrp (recommended). You can also use AwsCognitoBasic.
  • AWSCognitoRegion: Set this to the region of the User Pool.
  • AWSUserPoolId: Set this to the User Pool Id.
  • AWSUserPoolClientAppId: Set this to the User Pool Client App Id.
  • AWSUserPoolClientAppSecret: Set this to the User Pool Client Secret.
  • AWSIdentityPoolId: Set this to the Identity Pool Id of the Identity Pool that is linked with the User Pool.
  • User: Set this to the username of the user registered in the User Pool.
  • Password: Set this to the password of the user registered in the User Pool.

GraphQL Connector for CData Sync

Modeling GraphQL Data

This section shows how to control the various schemas that the Sync App offers to bridge the gap between relational SQL and GraphQL services.

Schema Introspection

GraphQL services offer a introspection query service which the Sync App can use to obtain view and column names.

All SCALAR mutation fields are exposed directly, and all object fields are expanded.

Mutations

The Sync App will automatically scan for available Using Mutations. Given that there is no method provided by GraphQL for determining which mutations can be used for each table, each mutation is exposed as a stored procedure.

LIST fields are exposed as temporary tables (GraphQL tables of type TEMPORARY_TABLE). The discovered temporary tables can be obtained by querying the sys_tables and sys_tablecolumns system tables.

Customizing Schemas

Operations details the process for configuring custom schema files. Setting up these custom schema files is a required step in establishing a connection to GraphQL data.

System Tables

See System Tables to query the current table metadata.

Stored Procedures

The Sync App makes use of Stored Procedures to perform various functions, such as obtaining and refreshing OAuth tokens.

GraphQL Connector for CData Sync

Automatic Schema Discovery

By default, the Sync App will automatically read metadata from GraphQL.

Schema Introspection

GraphQL services offer a introspection query service which the Sync App can use to obtain view and column names.

A GraphQL introspection query service has a query object at its root. Other objects are nested into the root query object, which can in turn have their own nested objects.

The Sync App reads LIST or Relay Connection type objects as views. If a field is SCALAR, it's read as a column, and if a field is a simple OBJECT, it is expanded.

Set the metadata introspection depth as follows:

  • ExpandTablesDepth: Setting to 0 will read only from the root query object. In scenarios where lists are nested in other lists, set the ExpandTablesDepth to the number of nested layers deep to be scanned.
  • ExpandColumnsDepth: This determines how many more layers deep (starting from the ExpandTablesDepth) to expand objects to include fields from their nested child objects.

GraphQL Connector for CData Sync

Using Mutations

The Sync App will automatically scan for available mutations. Given that there is no method provided by GraphQL for determining which mutations can be used for each table, each mutation is exposed as a stored procedure.

All SCALAR mutation fields are exposed directly, and all object fields are expanded.

LIST fields are exposed as temporary tables (GraphQL tables of type TEMPORARY_TABLE). The discovered temporary tables can be obtained by querying the sys_tables and sys_tablecolumns system tables. These tables contain a RowId and ParentId field to denote the row and housing (parent) table of a given child table.

An example of a mutation is productCreate. Invoke mutations as a stored procedure after first loading the relevant child tables needed for the operation:

INSERT INTO productCreate_metafields (namespace,key,value,type) VALUES ('MRproductInfo','ALU','449788022','string')

INSERT INTO productCreate_variants (RowId,price,sku,inventoryManagement,weightUnit,weight,options,metafields,inventoryQuantities) VALUES (1,'39.99','38536314-0acb-4d3f-b8ff-a0f2014d2c75','SHOPIFY','POUNDS',1,'L,XL,XXL','productCreate_variants_metafields','productCreate_variants_inventoryQuantities')

INSERT INTO productCreate_variants_metafields (ParentId,namespace,key,value,type) VALUES ('1','MRproductInfo','ALU','449788022-M-','string')

INSERT INTO productCreate_variants_metafields (ParentId,namespace,key,value,type) VALUES ('1','MRproductInfo','ItemNumber','400000881201','string')

INSERT INTO productCreate_variants_inventoryQuantities (ParentId,locationId,availableQuantity) VALUES ('1','gid://shopify/Location/1448280087',5)

INSERT INTO productCreate_media (originalSource,alt,mediaContentType) VALUES ('https://static.nike.com/a/images/t_PDP_1280_v1/f_auto,q_auto:eco/qwqfyddzikcgc4ozwigp/revolution-5-road-running-shoes-szF7CS.png','Magic Shoes','IMAGE')

EXECUTE productCreate title='NIKE  - 449788022', descriptionHtml=' - MEN\\'S SHOES  42-MENS L/S TEES',productType='Staging', vendor='NIKE', published='false', options='size,width',metafields='productCreate_metafields', variants='productCreate_variants', media='productCreate_media'

GraphQL Connector for CData Sync

Customizing Schemas

Custom schemas are defined in configuration files. This chapter outlines the structure of these files.
Note: The GenerateSchemaFiles property enables you to persist table metadata in static schema files that are easy to customize (to persist your changes to column data types, for example). Set this property to "OnStart" to generate schema files for all tables in your database at connection. Alternatively, set this property to "OnUse" to generate schemas as you execute SELECT queries to tables. It is also possible to create a specific schema file for a table using the CreateSchema stored procedure.

Editing Schema Files

Tables and views are defined by authoring schema files in APIScript. APIScript is a simple configuration language that allows you to define the columns and the behavior of the table. It also has built-in Operations that enable you to process GraphQL. In addition to these data processing primitives, APIScript is a full-featured language with constructs for conditionals, looping, etc. However, as shown by the example schema, for most table definitions you will not need to use these features.

Example Schema

Below is a fully functional table schema that models the Labels table and contains all the components you will need to execute SQL to GraphQL data sources.

You can find more information on each of the components of a schema in Column Definitions, SELECT Execution.

 <rsb:script xmlns:rsb="http://apiscript.com/ns?v1" xmlns:xs="http://www.cdata.com/ns/rsbscript/2" xmlns:other="http://apiscript.com/ns?v1"> 
   <rsb:info title="Labels" desc="Lists information about the different labels you can apply on an issue." other:possiblePaths="{'path':'/repository/labels/edges/node','Name':{'path':'/repository/label'}}" other:paginationObjects="{'labels':{'cursorName':'after','cursorType':'String','pageSizeArgumentName':'first','pageSizeArgumentType':'Int','depth':'1','paginationType':'Cursor','isConnection':'True','pageInfo':['endCursor','hasNextPage','hasPreviousPage','startCursor']}}"> 
     <attr   name="Id"               xs:type="string"     key="true"   other:relativePath="id"             desc="The ID of the label."                                                                                                                                                                                                                                                                                                                     /> 
     <attr   name="RepositoryName"   xs:type="string"                            other:relativePath="name"           desc="The name of the repository."                                     other:filter="name:="    other:argumenttype="String!"    other:depth="1"                                           references="Repositories.Name"                                                                                /> 
     <attr   name="UserLogin"        xs:type="string"                                                                          desc="The login name of the user."                                     other:filter="owner:="   other:argumenttype="String!"    other:depth="1"                                           references="Users.Login"            other:mirror="true"         other:canBeSliced="true"  /> 
     <attr   name="Color"            xs:type="string"                            other:relativePath="color"          desc="Identifies the label color."                                                                                                                                                                                                                                                                                                              /> 
     <attr   name="CreatedAt"        xs:type="datetime"                          other:relativePath="createdAt"      desc="Identifies the date and time when the label was created."                                                                                                                  other:orderby="CREATED_AT"                                                                                                                           /> 
     <attr   name="Description"      xs:type="string"                            other:relativePath="description"    desc="A brief description of this label."                                                                                                                                                                                                                                                                                                       /> 
     <attr   name="IsDefault"        xs:type="boolean"                           other:relativePath="isDefault"      desc="Indicates whether or not this is a default label."                                                                                                                                                                                                                                                                                        /> 
     <attr   name="Name"             xs:type="string"                            other:relativePath="name"           desc="Identifies the label name."                                      other:filter="name:="    other:argumenttype="String!"                                 other:orderby="NAME"                                                       other:isPathFilter="true"                                       /> 
     <attr   name="ResourcePath"     xs:type="string"                            other:relativePath="resourcePath"   desc="The HTTP path for this label."                                                                                                                                                                                                                                                                                                            /> 
     <attr   name="UpdatedAt"        xs:type="datetime"                          other:relativePath="updatedAt"      desc="Identifies the date and time when the label was last updated."                                                                                                                                                                                                                                                                            /> 
     <attr   name="Url"              xs:type="string"                            other:relativePath="url"            desc="The HTTP URL for this label."                                                                                                                                                                                                                                                                                                             /> 
   </rsb:info> 

   <rsb:script method="GET"> 
     <rsb:push op="graphqladoSelect" /> 
   </rsb:script> 

 </rsb:script>

Example Custom Headers

Static Headers

The following example shows how to add static headers in the schema file. These headers are added to the request every time the schema file is called.

  <rsb:script xmlns:rsb="http://apiscript.com/ns?v1" xmlns:xs="http://www.cdata.com/ns/rsbscript/2" xmlns:other="http://apiscript.com/ns?v1"> 
    ...
    <input name="Ship1" other:headerName="DynamicValuedHeader" />
    <input name="Ship2" other:headerName="DynamicValuedHeader" />
  </rsb:info> 

  <api:set attr="Header:Name#1"  value="StaticValuedHeader" />
  <api:set attr="Header:Value#1" value="StaticValuedHeader__Value" />

Dynamic Headers

The following example shows how to add dynamic headers in the schema file. These headers are added to the request every time the schema file is called.

  <rsb:script xmlns:rsb="http://apiscript.com/ns?v1" xmlns:xs="http://www.cdata.com/ns/rsbscript/2" xmlns:other="http://apiscript.com/ns?v1"> 
    ...
    <input name="Ship1" other:headerName="DynamicValuedHeader" />
    <input name="Ship2" other:headerName="DynamicValuedHeader" />
    <input name="Ship3" other:headerName="DynamicValuedHeader2" />
  </rsb:info> 

  <api:set attr="Header:Name#1"  value="DynamicValuedHeader" />
  <api:set attr="Header:Value#1" value="[_input.Ship1] - [_input.Ship2]" />

  SELECT * FROM [Table] WHERE [Ship1] = "Value1" AND [Ship2] = "Value2" AND [DynamicValuedHeader2] = "custom value"
In the above example, the value format of DynamicValuedHeader is parsed by the driver, but for DynamicValuedHeader2, it is the same as the value specified in the query.

GraphQL Connector for CData Sync

Column Definitions

The basic attributes of a column are the name of the column, the data type, whether the column is a primary key, the relative path and the depth. The Sync App uses the depth attribute to extract nodes from hierarchical data.

Mark up column attributes in the block of the schema file. You can also provide a description of each attribute using the desc property.

 <rsb:script xmlns:rsb="http://apiscript.com/ns?v1" xmlns:xs="http://www.cdata.com/ns/rsbscript/2" xmlns:other="http://apiscript.com/ns?v1"> 
   <rsb:info title="Labels" desc="Lists information about the different labels you can apply on an issue." other:possiblePaths="{'path':'/repository/labels/edges/node','Name':{'path':'/repository/label'}}" other:paginationObjects="{'labels':{'cursorName':'after','cursorType':'String','pageSizeArgumentName':'first','pageSizeArgumentType':'Int','depth':'1','paginationType':'Cursor','isConnection':'True','pageInfo':['endCursor','hasNextPage','hasPreviousPage','startCursor']}}"> 
     <attr   name="Id"               xs:type="string"     key="true"   other:relativePath="id"             desc="The ID of the label."                                                                                                                                                                                                                                                                                                                  /> 
     <attr   name="RepositoryName"   xs:type="string"                            other:relativePath="name"           desc="The name of the repository."                                     other:filter="name:="    other:argumenttype="String!"    other:depth="1"                                           references="Repositories.Name"                                                                             /> 
     <attr   name="UserLogin"        xs:type="string"                                                                          desc="The login name of the user."                                     other:filter="owner:="   other:argumenttype="String!"    other:depth="1"                                           references="Users.Login"         other:mirror="true"         other:canBeSliced="true"  /> 
     <attr   name="Color"            xs:type="string"                            other:relativePath="color"          desc="Identifies the label color."                                                                                                                                                                                                                                                                                                           /> 
     <attr   name="CreatedAt"        xs:type="datetime"                          other:relativePath="createdAt"      desc="Identifies the date and time when the label was created."                                                                                                                  other:orderby="CREATED_AT"                                                                                                                        /> 
     <attr   name="Description"      xs:type="string"                            other:relativePath="description"    desc="A brief description of this label."                                                                                                                                                                                                                                                                                                    /> 
     <attr   name="IsDefault"        xs:type="boolean"                           other:relativePath="isDefault"      desc="Indicates whether or not this is a default label."                                                                                                                                                                                                                                                                                     /> 
     <attr   name="Name"             xs:type="string"                            other:relativePath="name"           desc="Identifies the label name."                                      other:filter="name:="    other:argumenttype="String!"                                 other:orderby="NAME"                                                    other:isPathFilter="true"                                       /> 
     <attr   name="ResourcePath"     xs:type="string"                            other:relativePath="resourcePath"   desc="The HTTP path for this label."                                                                                                                                                                                                                                                                                                         /> 
     <attr   name="UpdatedAt"        xs:type="datetime"                          other:relativePath="updatedAt"      desc="Identifies the date and time when the label was last updated."                                                                                                                                                                                                                                                                         /> 
     <attr   name="Url"              xs:type="string"                            other:relativePath="url"            desc="The HTTP URL for this label."                                                                                                                                                                                                                                                                                                          /> 
   </rsb:info> 

   <rsb:script method="GET"> 
     <rsb:push op="graphqladoSelect" /> 
   </rsb:script> 

 </rsb:script>
The following sections provide more detail on using paths to extract columns and rows. To see the column definitions in a complete schema, refer to Customizing Schemas.

Mapping SELECT Projection to GraphQL Fields

Control the building process of a GraphQL field path with the properties listed below:

  1. The other:possiblePaths property is used to specify the base paths that select the column's value.

    Base paths start with a '/' and contain the full path to the last GraphQL nested object.

      <rsb:info title="Labels" desc="Lists information about the different labels you can apply to an issue." other:possiblePaths="{'path':'/repository/labels/edges/node','Name':{'path':'/repository/label'}}" other:paginationObjects="{'labels':{'cursorName':'after','cursorType':'String','pageSizeArgumentName':'first','pageSizeArgumentType':'Int','depth':'1''paginationType':'Cursor','isConnection':'True','pageInfo':['endCursor','hasNextPage','hasPreviousPage','startCursor']}}">
    The following GraphQL query is based on the above script example:
    { # base path=/repository/labels/edges/node
      repository {
        labels {
          edges {
            node {
              ...
            }
          }
        }
      }
    }

  2. The other:relativePath property must be specified for each column. This property is used in conjuction with the other:possiblePaths property to build the GraphQL field path.

      <attr   name="Name"  xs:type="string"  other:relativePath="name"  desc="Identifies the label name."    />
    Based on the above script example the Sync App will build the following GraphQL query:
    { # base path=/repository/labels/edges/node
      repository { # depth=1 
        labels { # depth=2
          edges {
            node {
              name # path=base path + relative path.
            }
          }
        }
      }
    }

  3. Use the other:depth property to specify an element inside a specific GraphQL object. The indexes are 1-based. If this attribute is not specified then the default value will be equal to the last nested GraphQL object.

      <attr   name="RepositoryName"   xs:type="string"  other:relativePath="name"   desc="The name of the repository."  other:depth="1" />
    The following GraphQL query is built from the above script example:
    { # base path=/repository/labels/edges/node
      repository { # depth=1 
        name # This is mapped to the RepositoryName column
        labels { # depth=2
          edges {
            node {
              ...
            }
          }
        }
      }
    }

  4. Use the other:fragment property to specify a group of fields. This property can be used when the GraphQL server returns an array of objects and the Sync App may need to push this info as an aggregate.

      <attr   name="ColumnValues"   xs:type="string"  other:relativePath="column_values"   desc="Column values."  other:fragment="fragment ItemColumnValues on ColumnValue {  id \\r\\n value }" />
    Based on the above script example, the Sync App will build the following GraphQL query:
    query {
        items {
            column_values {
                ...ItemColumnValues
            }
        }
    }
    fragment ItemColumnValues on ColumnValue {
        id
        value
    }

  5. Use the other:canbesliced property enable slicing behavior in the Sync App

    For example,

    SELECT * FROM Table WHERE Col IN ('1','2','3')
    becomes
    SELECT * FROM Table WHERE Col=1
    SELECT * FROM Table WHERE Col=2
    SELECT * FROM Table WHERE Col=3

  6. Use the other:mirror property to reflect the value specified in the criteria. Use on columns that are not specified in the server response.

    For example:


    SELECT * FROM Table WHERE Col=X (If other:mirror=true the Sync App will artificially set the value of Col to X for every row.)
  7. Use references to reference the key column of the parent table. Example: If there are two tables Orders and OrderLineItems and the OrderLineItems has a column OrderId, the references field for this column will be "Orders.Id".

Notes:

  • Paths and column names (when used to generate the path) are case sensitive.
  • At least one possible path should be specified.
  • The other:relativePath property must be specified for every column. Otherwise, the Sync App cannot map the SELECT column to a GraphQL field.

GraphQL Connector for CData Sync

SELECT Execution

When a SELECT query is issued, the Sync App executes the GET method of the schema, which invokes the Sync App's built-in operations to process GraphQL. In the GET method you have control over the request for data. The following procedures show several ways to use this: search the remote data, server-side, with SELECT WHERE, or implement paging.

Mapping SELECT criteria to GraphQL arguments

The following sections show how to translate a SELECT WHERE statement into a GraphQL query to GraphQL APIs. The procedure uses the following statement:

SELECT * 
FROM <table> 
WHERE ModifiedAt<'2019-10-30 05:05:36.001'

If this filter is supported on the server via query parameters, you can use the other:filter property of the api:info column definition to specify the desired mapping. For the above query, the Sync App will use this property to map the modifiedAt < '<date>' filter to the query parameter that returns results that were modifed before a given date, and the modifedAt > '<date>' filter to the query parameter that filters results that were modifed after.

  • other:filter is a semicolon separated list of <parameter name>:<operator list>. <parameter name> is the name of the query parameter and <operator list> is a comma-separated list of operators used for the mapping. Valid operators are <, <=, =, > and >=.
  • other:argumentType is a required extra info. It should contain the type of the argument based on the GraphQL schema type language.

To perform this mapping, the Sync App would use the following markup for the modifedAt column definition:

<attr name="ModifiedAt" xs:type="datetime" other:relativePath="modifiedAt" other:argumentType="DateTime" description="When the vendor was last modified." other:filter="modifiedAtAfter:>;modifiedAtBefore:<" />

This query results in the following postdata:

{
    "variables": {
        "ModifiedAt_modifiedAtBefore": "2019-10-30T09:05:36.001Z"
    },
    "query": "query($ModifiedAt_modifiedAtBefore:DateTime) {\r\nbusinesses {\r\nedges {\r\nnode {\r\ncustomers(modifiedAtBefore:$ModifiedAt_modifiedAtBefore) {\r\nedges {\r\nnode {\r\nid\r\nmodifiedAt\r\n}\r\n}\r\npageInfo {\r\ntotalPages\r\ncurrentPage\r\n}\r\n}\r\nid\r\n}\r\n}\r\npageInfo {\r\ntotalPages\r\ncurrentPage\r\n}\r\n}\r\n}\r\n"
}

Path filters

There exist GraphQL services where the GraphQL argument is not enough to process the filter serverside. The path should be changed. In order to correctly use a path filter you need to complete the following steps:
  1. Add the path to the other:possiblePaths extra info and map it with the column name you want to filter.

    Ex: other:possiblepaths="{'path':'/businesses/edges/node','id':{'path':'/business'}}"

  2. Set the other:isPathFilter to TRUE in the column defintion.
    <attr  name="Id"  xs:type="string" key="true" other:relativePath="id" other:isPathFilter="true" other:filter="id:="  />
After completing these steps the following SQL query
SELECT Id,Name,CreatedAt FROM Businesses WHERE Id='QnVzaW5M6ZTY4ZDA2MmQtYzkzZS00MGZkLTk4YWUtNDg2YzcxMmExNzFl'
will be converted to the postdata:
{
    "variables": {
        "Id_id": "QnVzaW5M6ZTY4ZDA2MmQtYzkzZS00MGZkLTk4YWUtNDg2YzcxMmExNzFl"
    },
    "query": "query($Id_id:ID) {\r\nbusiness(id:$Id_id) {\r\nid\r\nname\r\ncreatedAt\r\n}\r\n}\r\n"
}

Pagination

The driver supports two pagination modes.

  • Cursor
    other:paginationObjects = "{
        'labels': {
            'cursorName': 'after',
            'cursorType': 'String',
            'pageSizeArgumentName': 'first',
            'pageSizeArgumentType': 'Int',
    	'depth':'1',
            'paginationType': 'Cursor',
            'isConnection': 'True',
            'pageInfo': ['endCursor', 'hasNextPage', 'hasPreviousPage', 'startCursor']
        }
    }"
    The following postdata will be generated after processing the other:paginationObjects table extra info specified above:
    {
        "variables": {
            "UserLogin_owner": "testaccount71",
            "RepositoryName_name": "test",
            "first": <Pagesize>
        },
        "query": "query($UserLogin_owner:String!, $RepositoryName_name:String!, $first:Int) {\r\nrepository(owner:$UserLogin_owner, name:$RepositoryName_name) {\r\nlabels(first:$first) {\r\nedges {\r\nnode {\r\nid\r\ncolor\r\ncreatedAt\r\ndescription\r\nisDefault\r\nname\r\nresourcePath\r\nupdatedAt\r\nurl\r\n}\r\n}\r\npageInfo {\r\nendCursor\r\nhasNextPage\r\n}\r\n}\r\nname\r\n}\r\n}\r\n"
    }
  • Offset
    other:paginationObjects="{
        'businesses': {
            'offsetArgumentName': 'page',
            'offsetArgumentType': 'Int',
            'pageSizeArgumentName': 'pageSize',
            'pageSizeArgumentType': 'Int',
    	'depth':'1',
            'paginationType': 'Offset',
            'isConnectionObject': 'True',
            'pageInfo': ['currentPage', 'totalPages', 'totalCount']
        }
    }"
    The following postdata will be generated after processing the other:paginationObjects table extra info specified above:
    {
        "variables": {
            "pageSize_1": <Pagesize>
        },
        "query": "query($pageSize_1:Int) {\r\nbusinesses(pageSize:$pageSize_1) {\r\nedges {\r\nnode {\r\nid\r\n}\r\n}\r\npageInfo {\r\ntotalPages\r\ncurrentPage\r\n}\r\n}\r\n}\r\n"
    }

Process Other SELECT Statements Server Side

ORDER BY

You can sort the results serverside if the GraphQL service supports it by specifying the following properties:
  • The other:orderByFormat can be specified in the table definition or in the column definition.
    <rsb:info title="Labels" desc="Lists information about the different labels you can apply on an issue." other:orderByFormat="{field: {orderByArgumentValue}, direction: {sortOrder}}">
    <attr name="CreatedAt" xs:type="datetime" other:relativePath="createdAt"  other:orderByFormat="{field: {orderByArgumentValue}, direction: {sortOrder}}" other:orderBy="orderBy:CREATED_AT" />
  • The other:orderBy should be specified only in the column definition. The format of this property is <orderByArgumentName>:<orderByArgumentValue>
    <attr name="CreatedAt" xs:type="datetime" other:relativePath="createdAt"  other:orderBy="orderBy:CREATED_AT" />
After completing these steps the following SQL query
SELECT Id FROM Labels ORDER BY CreatedAt ASC
will be converted to the postdata:
{
    "variables": {
        "first": <Pagesize>
    },
    "query": "query($first:Int) {\r\nrepository {\r\nlabels(sort:{field: CREATED_AT, direction: ASC}, first:$first) {\r\nedges {\r\nnode {\r\nid\r\n}\r\n}\r\npageInfo {\r\nendCursor\r\nhasNextPage\r\n}\r\n}\r\n}\r\n}\r\n"
}

GraphQL Connector for CData Sync

Operations

The Sync App has high-performance operations for processing GraphQL data sources. These operations are platform neutral: Schema files that invoke these operations can be used in both .NET and Java. You can also extend the Sync App with your own operations written in .NET or Java.

The Sync App has the following operations:

Operation NameDescription
OAuthGetAccessTokenFor OAuth 1.0, exchange a request token for an access token. For OAuth 2.0, get an access token or get a new access token with the refresh token.
OAuthGetUserAuthorizationURLGenerates the user authorization URL. OAuth 2.0 will not access the network in this operation.

GraphQL Connector for CData Sync

OAuthGetAccessToken

The OAuthGetAccessToken operation is an APIScript operation that is used to facilitate the OAuth authentication and refresh flows.

The Sync App includes stored procedures that invoke this operation to complete the OAuth exchange. The following example schema briefly lists some of the typically required inputs before the following sections explain them in more detail.

Creating a GetOAuthAccessToken Stored Procedure

Invoke the OAuthGetAccessToken with the GetOAuthAccessToken stored procedure. The following inputs are required for most data sources and will provide default values for the connection properties of the same name.

<api:script xmlns:api="http://www.rssbus.com/ns/rsbscript/2">

  <api:info title="GetOAuthAccessToken"   description="Obtains the OAuth access token to be used for authentication with various APIs."                                                         >
    <input  name="AuthMode"               desc="The OAuth flow. APP or WEB."                                                                                                                    />
    <input  name="CallbackURL"            desc="The URL to be used as a trusted redirect URL, where the user will return with the token that verifies that they have granted your app access. " />
    <input  name="OAuthAccessToken"       desc="The request token. OAuth 1.0 only."                                                                                                             />
    <input  name="OAuthAccessTokenSecret" desc="The request token secret. OAuth 1.0 only."                                                                                                      />
    <input  name="Verifier"               desc="The verifier code obtained when the user grants permissions to your app."                                                                       />

    <output name="OAuthAccessToken"       desc="The access token."                                                                                                                              />
    <output name="OAuthTokenSecret"       desc="The access token secret."                                                                                                                       />
    <output name="OAuthRefreshToken"      desc="A token that may be used to obtain a new access token."                                                                                         />
 </api:info>

  <!-- Set OAuthVersion to 1.0 or 2.0. -->
  <api:set attr="OAuthVersion"                                                    value="MyOAuthVersion"                 />
  <!-- Set RequestTokenURL to the URL where the request for the request token is made. OAuth 1.0 only.-->
  <api:set attr="OAuthRequestTokenURL"                                            value="http://MyOAuthRequestTokenURL" />
  <!-- Set OAuthAuthorizationURL to the URL where the user logs into the service and grants permissions to the application. -->
  <api:set attr="OAuthAuthorizationURL"                                           value="http://MyOAuthAuthorizationURL" />
  <!-- Set OAuthAccessTokenURL to the URL where the request for the access token is made. -->
  <api:set attr="OAuthAccessTokenURL"                                             value="http://MyOAuthAccessTokenURL"   />
  <!-- Set GrantType to the authorization grant type. OAuth 2.0 only. -->
  <api:set attr="GrantType"                                                       value="CODE"                           />
  <!-- Set SignMethod to the signature method used to calculate the signature of the request. OAuth 1.0 only.-->
  <api:set attr="SignMethod"                                                      value="HMAC-SHA1"                      />
  <api:call op="oauthGetAccessToken">
    <api:push/>
  </api:call>
  
</api:script>

Writing the RefreshOAuthAccessToken Stored Procedure

You can also use OAuthGetAccessToken to refresh the access token by providing the following inputs:

<api:script xmlns:api="http://www.rssbus.com/ns/rsbscript/2">

  <api:info title="RefreshOAuthAccessToken" description="Refreshes the OAuth access token used for authentication." >
    <input  name="OAuthRefreshToken"        desc="A token that may be used to obtain a new access token."           />

    <output name="OAuthAccessToken"         desc="The authentication token returned."                               />
    <output name="OAuthTokenSecret"         desc="The authentication token secret returned. OAuth 1.0 only."        />
    <output name="OAuthRefreshToken"        desc="A token that may be used to obtain a new access token."           />
    <output name="ExpiresIn"                desc="The remaining lifetime on the access token."                      />

  </api:info>

  <!-- Set OAuthVersion to 1.0 or 2.0. -->
  <api:set attr="OAuthVersion"                                                    value="MyOAuthVersion"                 />
    <!-- Set GrantType to REFRESH. OAuth 2.0 only. -->
    <api:set attr="GrantType"            value="REFRESH" />
    <!-- Set SignMethod to the signature method used to calculate the signature of the request. OAuth 1.0 only.-->
    <api:set attr="SignMethod"           value="HMAC-SHA1" />
    <!-- Set OAuthAccessTokenURL to the URL where the request for the access token is made. -->
    <api:set attr="OAuthAccessTokenURL"  value="http://MyOAuthAccessTokenURL" />
    <!-- Set AuthMode to 'WEB' when calling RefreshOAuthAccessToken -->
    <api:set attr="AuthMode" value="WEB"/>
  <api:call op="oauthGetAccessToken">
    <api:push/>
  </api:call>
  
</api:script>

Input Parameters

  • OAuthVersion: The OAuth version. The allowed values are 1.0, 2.0. The default value is 1.0.
  • AuthMode: The OAuth flow. OAuth 2.0 only. If you choose the App mode, this operation will launch your browser and prompt you to authenticate with your account credentials. Set this parameter to WEB to authenticate a Web app or if the Sync App is not allowed to open a Web browser. The default value is APP.
  • OAuthRequestTokenURL: The URL where the Sync App makes a request for the request token. OAuth 1.0 only. Required for OAuth 1.0.
  • OAuthAuthorizationURL: The URL where the user logs into the service and grants permissions to the application. In OAuth 1.0, if permissions are granted the request token is authorized.
  • OAuthAccessTokenURL: The URL where the request for the access token is made. In OAuth 1.0, the authorized request token is exchanged for the access token.
  • CallbackURL: The URL to be used as a trusted redirect URL, where the user will return with the token that verifies that they have granted your app access. This value must match the callback URL you specify when you register an app. Note that your data source may additionally require the port.
  • OAuthClientId: The client Id obtained when you register an app. Also called a consumer key.
  • OAuthClientSecret: The client secret obtained when you register an app. Also called a consumer secret.
  • OAuthAccessToken: The request token. OAuth 1.0 only.
  • OAuthAccessTokenSecret: The request token secret. OAuth 1.0 only.
  • OAuthRefreshToken: A token that may be used to obtain a new access token.
  • GrantType: Authorization grant type. OAuth 2.0 only. The allowed values are CODE, PASSWORD, CLIENT, REFRESH. The default value is CODE.
  • Verifier: The verifier code obtained when the user grants permissions to the Sync App. In the OAuth 2.0 code grant type, the verifier code is located in the code query string parameter of the callback URL. In OAuth 1.0, the verifier is located in the oauth_verifier query string parameter of the callback URL.
  • SignMethod: The signature method used to calculate the signature for OAuth 1.0. The allowed values are HMAC-SHA1, PLAINTEXT. The default value is HMAC-SHA1.
  • Cert: Path for the PFX personal certificate file. OAuth 1.0 only.
  • CertPassword: Personal certificate password. OAuth 1.0 only.
  • OtherOptions: Other options to control the behavior of OAuth.
  • OAuthParam:*: Other parameters.
  • PostData: The HTTP POST data.
  • Timeout: The timeout, in seconds, for the operation to complete. Zero (0) means no timeout. The default value is 60.
  • LogFile: Specifies a file where the request and response are logged.
  • Proxy_Auto: Whether or not the proxy should be detected from Windows system settings. This takes precedence over other proxy settings and is not available in Java. The allowed values are TRUE, FALSE. The default value is FALSE.
  • Proxy_Server: IP address or host name of the proxy server used for the request.
  • Proxy_Port: The port number of the proxy server.
  • Proxy_User: The user Id used to authenticate with the proxy server.
  • Proxy_Password: The password used to authenticate with the proxy server.
  • Proxy_AuthScheme: The authentication scheme of the proxy server. The allowed values are BASIC, DIGEST, PROPRIETARY, NONE, NTLM. The default value is BASIC.
  • Proxy_AuthToken: The proxy authentication token.
  • Proxy_SSLType: The SSL type of the proxy server. The allowed values are AUTO, ALWAYS, NEVER, TUNNEL. The default value is AUTO.
  • Firewall_Type: The type of the firewall. The allowed values are NONE, TUNNEL, SOCKS4, SOCKS5. The default value is NONE.
  • Firewall_Server: The IP address or host name of the firewall.
  • Firewall_Port: The port number of the firewall.
  • Firewall_User: The user Id used to authenticate with the firewall.
  • Firewall_Password: The password used to authenticate with the firewall.

Output Parameters

  • OAuthAccessToken: The access token.
  • OAuthTokenSecret: The access token secret.
  • OAuthRefreshToken: A token that may be used to obtain a new access token.
  • ExpiresIn: The remaining lifetime on the access token.
  • OAuthParam:*: Other parameters sent from the server.

GraphQL Connector for CData Sync

OAuthGetUserAuthorizationURL

The OAuthGetUserAuthorizationURL is an APIScript operation that is used to facilitate the OAuth authentication flow for Web apps, for offline apps, and in situations where the Sync App is not allowed to open a Web browser. To pass the needed inputs to this operation, define the GetOAuthAuthorizationURL stored procedure. The Sync App can call this internally.

Define stored procedures in .rsb files with the same file name as the schema's title. The example schema briefly lists some of the typically required inputs before the following sections explain them in more detail.

Writing the GetOAuthAuthorizationURL Stored Procedure

Call OAuthGetUserAuthorizationURL in the GetOAuthAuthorizationURL stored procedure.

<api:script xmlns:api="http://www.rssbus.com/ns/rsbscript/2">

  <api:info title="Get OAuth Authorization URL" description="Obtains the OAuth authorization URL used for authentication with various APIs."                                                          >
    <input  name="CallbackURL"                  desc="The URL to be used as a trusted redirect URL, where the user will return with the token that verifies that they have granted your app access. " />

    <output name="URL"                          desc="The URL where the user logs in and is prompted to grant permissions to the app. "                                                               />
    <output name="OAuthAccessToken"             desc="The request token. OAuth 1.0 only."                                                                                                             />
    <output name="OAuthTokenSecret"             desc="The request token secret. OAuth 1.0 only."                                                                                                      />
  </api:info>

  <!-- Set OAuthVersion to 1.0 or 2.0. -->
  <api:set attr="OAuthVersion"          value="MyOAuthVersion"                 />
  <!-- Set ResponseType to the desired authorization grant type. OAuth 2.0 only.-->
  <api:set attr="ResponseType"           value="code"                           />
  <!-- Set SignMethod to the signature method used to calculate the signature. OAuth 1.0 only.-->
  <api:set attr="SignMethod"            value="HMAC-SHA1"                      />
  <!-- Set OAuthAuthorizationURL to the URL where the user logs into the service and grants permissions to the application. -->
  <api:set attr="OAuthAuthorizationURL"  value="http://MyOAuthAuthorizationURL" />
  <!-- Set OAuthAccessTokenURL to the URL where the request for the access token is made. -->
  <api:set attr="OAuthAccessTokenURL"   value="http://MyOAuthAccessTokenURL"/>
  <!-- Set RequestTokenURL to the URL where the request for the request token is made. OAuth 1.0 only.-->
  <api:set attr="OAuthRequestTokenURL"   value="http://MyOAuthRequestTokenURL"       />
  <api:call op="oauthGetUserAuthorizationUrl">
    <api:push/>
  </api:call>
  
</api:script>

<p>

Input Parameters

  • OAuthVersion: The OAuth version. The allowed values are 1.0, 2.0. The default value is 1.0.
  • OAuthAuthorizationURL: The URL where the user logs into the service and grants permissions to the application. In OAuth 1.0, if permissions are granted the request token is authorized.
  • OAuthRequestTokenURL: The URL where the Sync App makes a request for the request token. OAuth 1.0 only. Required for OAuth 1.0.
  • CallbackURL: The URL to be used as a trusted redirect URL, where the user will return with the token that verifies that they have granted your app access. This value must match the callback URL you specify when you register an app. Note that your data source may additionally require the port. The default value is http://127.0.0.1/.
  • OAuthClientId: The client Id. Also called a consumer key.
  • OAuthClientSecret: The client secret. Also called a consumer secret.
  • ResponseType: The desired authorization grant type. OAuth 2.0 only. The allowed values are CODE, IMPLICIT. The default value is CODE.
  • SignMethod: The signature method used to calculate the signature for OAuth 1.0. The allowed values are HMAC-SHA1, RSA-SHA1, PLAINTEXT. The default value is HMAC-SHA1.
  • Cert: Path for the personal certificate PFX file. OAuth 1.0 only.
  • CertPassword: Personal certificate password. OAuth 1.0 only.
  • OtherOptions: Other options to control the behavior of OAuth.
  • OAuthParam:*: Other parameters. OAuth 1.0 only.
  • Timeout: The timeout, in seconds, for the operation to complete. Zero (0) means no timeout. The default value is 60.
  • Proxy_Auto: Whether or not the proxy should be detected from Windows system settings. This takes precedence over other proxy settings and is not available in Java. The allowed values are TRUE, FALSE. The default value is FALSE.
  • Proxy_Server: IP address or host name of the proxy server used for the request.
  • Proxy_Port: The port number of the proxy server.
  • Proxy_User: The user Id used to authenticate with the proxy server.
  • Proxy_Password: The password used to authenticate with the proxy server.
  • Proxy_AuthScheme: The authentication scheme of the proxy server. The allowed values are BASIC, DIGEST, PROPRIETARY, NONE, NTLM. The default value is BASIC.
  • Proxy_AuthToken: The proxy authentication token.
  • Proxy_SSLType: The SSL type of the proxy server. The allowed values are AUTO, ALWAYS, NEVER, TUNNEL. The default value is AUTO.
  • Firewall_Type: The type of the firewall. The allowed values are NONE, TUNNEL, SOCKS4, SOCKS5. The default value is NONE.
  • Firewall_Server: The IP address or host name of the firewall.
  • Firewall_Port: The port number of the firewall.
  • Firewall_User: The user Id used to authenticate with the firewall.
  • Firewall_Password: The password used to authenticate with the firewall.

Output Parameters

  • URL: The URL where the user logs in and is prompted to grant permissions to the app. In OAuth 1.0, if permissions are granted the request token is authorized.
  • OAuthAccessToken: The request token. OAuth 1.0 only.
  • OAuthTokenSecret: The request token secret. OAuth 1.0 only.
  • OAuthParam:*: Other parameters sent from the server. OAuth 1.0 only.

GraphQL Connector for CData Sync

Connection String Options

The connection string properties are the various options that can be used to establish a connection. This section provides a complete list of the options you can configure in the connection string for this provider. Click the links for further details.

For more information on establishing a connection, see Establishing a Connection.

Authentication


PropertyDescription
AuthSchemeThe type of authentication to use when connecting to remote services.
URLThe URL of the GraphQL service.
UserThe GraphQL user account used to authenticate.
PasswordThe password used to authenticate the user.

AWS Authentication


PropertyDescription
AWSCognitoRegionThe hosting region for AWS Cognito.
AWSUserPoolIdThe User Pool Id.
AWSUserPoolClientAppIdThe User Pool Client App Id.
AWSUserPoolClientAppSecretOptional. The User Pool Client App Secret.

OAuth


PropertyDescription
OAuthVersionThe version of OAuth being used.
OAuthClientIdThe client Id assigned when you register your application with an OAuth authorization server.
OAuthClientSecretThe client secret assigned when you register your application with an OAuth authorization server.
OAuthGrantTypeThe grant type for the OAuth flow.
OAuthIncludeCallbackURLWhether to include the callback URL in an access token request.
OAuthAuthorizationURLThe authorization URL for the OAuth service.
OAuthAccessTokenURLThe URL to retrieve the OAuth access token from.
OAuthRefreshTokenURLThe URL to refresh the OAuth token from.
OAuthRequestTokenURLThe URL the service provides to retrieve request tokens from. This is required in OAuth 1.0.
AuthTokenThe authentication token used to request and obtain the OAuth Access Token.
AuthKeyThe authentication secret used to request and obtain the OAuth Access Token.
OAuthParamsA comma-separated list of other parameters to submit in the request for the OAuth access token in the format paramname=value.

JWT OAuth


PropertyDescription
OAuthJWTCertThe JWT Certificate store.
OAuthJWTCertTypeThe type of key store containing the JWT Certificate.
OAuthJWTCertPasswordThe password for the OAuth JWT certificate.
OAuthJWTCertSubjectThe subject of the OAuth JWT certificate.

SSL


PropertyDescription
SSLClientCertThe TLS/SSL client certificate store for SSL Client Authentication (2-way SSL).
SSLClientCertTypeThe type of key store containing the TLS/SSL client certificate.
SSLClientCertPasswordThe password for the TLS/SSL client certificate.
SSLClientCertSubjectThe subject of the TLS/SSL client certificate.
SSLServerCertThe certificate to be accepted from the server when connecting using TLS/SSL.

Firewall


PropertyDescription
FirewallTypeThe protocol used by a proxy-based firewall.
FirewallServerThe name or IP address of a proxy-based firewall.
FirewallPortThe TCP port for a proxy-based firewall.
FirewallUserThe user name to use to authenticate with a proxy-based firewall.
FirewallPasswordA password used to authenticate to a proxy-based firewall.

Proxy


PropertyDescription
ProxyAutoDetectThis indicates whether to use the system proxy settings or not.
ProxyServerThe hostname or IP address of a proxy to route HTTP traffic through.
ProxyPortThe TCP port the ProxyServer proxy is running on.
ProxyAuthSchemeThe authentication type to use to authenticate to the ProxyServer proxy.
ProxyUserA user name to be used to authenticate to the ProxyServer proxy.
ProxyPasswordA password to be used to authenticate to the ProxyServer proxy.
ProxySSLTypeThe SSL type to use when connecting to the ProxyServer proxy.
ProxyExceptionsA semicolon separated list of destination hostnames or IPs that are exempt from connecting through the ProxyServer .

Logging


PropertyDescription
LogModulesCore modules to be included in the log file.

Schema


PropertyDescription
LocationA path to the directory that contains the schema files defining tables, views, and stored procedures.
BrowsableSchemasThis property restricts the schemas reported to a subset of the available schemas. For example, BrowsableSchemas=SchemaA,SchemaB,SchemaC.
TablesThis property restricts the tables reported to a subset of the available tables. For example, Tables=TableA,TableB,TableC.
ViewsRestricts the views reported to a subset of the available tables. For example, Views=ViewA,ViewB,ViewC.
ExpandArgumentsDepthThis property is used to determine how far the provider should search for columns inside the arguments of type INPUT_OBJECT.
ExpandTablesDepthThis property is used to determine the depth of the child tables.
ExpandTemporaryTablesDepthThis property is used to determine the depth of the child temporary tables. Only works if ExposeDynamicProcedures is set to true.
ExpandColumnsDepthThis property is used to determine how far the provider should search for columns inside the GraphQL objects.
IncludeDeprecatedMetadataThis property is used to determine whether the provider should expose deprecated tables and columns or not.
ExposeDynamicProceduresThis property is used to determine whether the provider should expose mutations as dynamic procedures or not.

Miscellaneous


PropertyDescription
CustomHeadersOther headers as determined by the user (optional).
GenerateSchemaFilesIndicates the user preference as to when schemas should be generated and saved.
MaxRowsLimits the number of rows returned when no aggregation or GROUP BY is used in the query. This takes precedence over LIMIT clauses.
OtherThese hidden properties are used only in specific use cases.
PagesizeThe maximum number of results to return per page from GraphQL.
PseudoColumnsThis property indicates whether or not to include pseudo columns as columns to the table.
TimeoutThe value in seconds until the timeout error is thrown, canceling the operation.
UserDefinedViewsA filepath pointing to the JSON configuration file containing your custom views.
GraphQL Connector for CData Sync

Authentication

This section provides a complete list of the Authentication properties you can configure in the connection string for this provider.


PropertyDescription
AuthSchemeThe type of authentication to use when connecting to remote services.
URLThe URL of the GraphQL service.
UserThe GraphQL user account used to authenticate.
PasswordThe password used to authenticate the user.
GraphQL Connector for CData Sync

AuthScheme

The type of authentication to use when connecting to remote services.

Remarks

General

The following options are generally available to all connections:

  • None: Uses no authentication.
  • Basic: Uses Basic authentication with User and Password.
  • OAuth: Uses either OAuth1 or OAuth2, with the specific flow being determined by the OAuthGrantType. OAuthVersion must be set to determine what version of OAuth is used.
  • OAuthPKCE: Uses OAuth2 with the authorization code grant type and PKCE extension. OAuthClientId is the credential.
  • AwsCognitoSrp: Set to use Cognito based authentication. This is recommended over AwsCognitoBasic because this option does NOT send the password to the server for authentication, instead it uses the SRP protocol.
  • AwsCognitoBasic: Set to use Cognito based authentication.

GraphQL Connector for CData Sync

URL

The URL of the GraphQL service.

Remarks

The URL of the GraphQL service.

GraphQL Connector for CData Sync

User

The GraphQL user account used to authenticate.

Remarks

Together with Password, this field is used to authenticate against the GraphQL server.

GraphQL Connector for CData Sync

Password

The password used to authenticate the user.

Remarks

The User and Password are together used to authenticate with the server.

GraphQL Connector for CData Sync

AWS Authentication

This section provides a complete list of the AWS Authentication properties you can configure in the connection string for this provider.


PropertyDescription
AWSCognitoRegionThe hosting region for AWS Cognito.
AWSUserPoolIdThe User Pool Id.
AWSUserPoolClientAppIdThe User Pool Client App Id.
AWSUserPoolClientAppSecretOptional. The User Pool Client App Secret.
GraphQL Connector for CData Sync

AWSCognitoRegion

The hosting region for AWS Cognito.

Remarks

The hosting region for AWS Cognito. Available values are OHIO, NORTHERNVIRGINIA, NORTHERNCALIFORNIA, OREGON, CAPETOWN, HONGKONG, MUMBAI, OSAKA, SEOUL, SINGAPORE, SYDNEY, TOKYO, CENTRAL, BEIJING, NINGXIA, FRANKFURT, IRELAND, LONDON, MILAN, PARIS, STOCKHOLM, BAHRAIN, SAOPAULO, GOVCLOUDEAST, and GOVCLOUDWEST.

GraphQL Connector for CData Sync

AWSUserPoolId

The User Pool Id.

Remarks

You can find this in AWS Cognito -> Manage User Pools -> select your user pool -> General settings -> Pool Id.

GraphQL Connector for CData Sync

AWSUserPoolClientAppId

The User Pool Client App Id.

Remarks

You can find this in AWS Cognito -> Manage Identity Pools -> select your user pool -> General settings -> App clients -> App client Id.

GraphQL Connector for CData Sync

AWSUserPoolClientAppSecret

Optional. The User Pool Client App Secret.

Remarks

You can find this in AWS Cognito -> Manage Identity Pools -> select your user pool -> General settings -> App clients -> App client secret.

GraphQL Connector for CData Sync

OAuth

This section provides a complete list of the OAuth properties you can configure in the connection string for this provider.


PropertyDescription
OAuthVersionThe version of OAuth being used.
OAuthClientIdThe client Id assigned when you register your application with an OAuth authorization server.
OAuthClientSecretThe client secret assigned when you register your application with an OAuth authorization server.
OAuthGrantTypeThe grant type for the OAuth flow.
OAuthIncludeCallbackURLWhether to include the callback URL in an access token request.
OAuthAuthorizationURLThe authorization URL for the OAuth service.
OAuthAccessTokenURLThe URL to retrieve the OAuth access token from.
OAuthRefreshTokenURLThe URL to refresh the OAuth token from.
OAuthRequestTokenURLThe URL the service provides to retrieve request tokens from. This is required in OAuth 1.0.
AuthTokenThe authentication token used to request and obtain the OAuth Access Token.
AuthKeyThe authentication secret used to request and obtain the OAuth Access Token.
OAuthParamsA comma-separated list of other parameters to submit in the request for the OAuth access token in the format paramname=value.
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OAuthVersion

The version of OAuth being used.

Remarks

The version of OAuth being used. The following options are available: Disabled,1.0,2.0

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OAuthClientId

The client Id assigned when you register your application with an OAuth authorization server.

Remarks

As part of registering an OAuth application, you will receive the OAuthClientId value, sometimes also called a consumer key, and a client secret, the OAuthClientSecret.

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OAuthClientSecret

The client secret assigned when you register your application with an OAuth authorization server.

Remarks

As part of registering an OAuth application, you will receive the OAuthClientId, also called a consumer key. You will also receive a client secret, also called a consumer secret. Set the client secret in the OAuthClientSecret property.

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OAuthGrantType

The grant type for the OAuth flow.

Remarks

The following options are available: CODE,CLIENT,PASSWORD

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OAuthIncludeCallbackURL

Whether to include the callback URL in an access token request.

Remarks

This defaults to true since standards-compliant OAuth services will ignore the redirect_uri parameter for grant types like CLIENT or PASSWORD that do not require it.

This option should only be enabled for OAuth services that report errors when redirect_uri is included.

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OAuthAuthorizationURL

The authorization URL for the OAuth service.

Remarks

The authorization URL for the OAuth service. At this URL, the user logs into the server and grants permissions to the application. In OAuth 1.0, if permissions are granted, the request token is authorized.

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OAuthAccessTokenURL

The URL to retrieve the OAuth access token from.

Remarks

The URL to retrieve the OAuth access token from. In OAuth 1.0, the authorized request token is exchanged for the access token at this URL.

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OAuthRefreshTokenURL

The URL to refresh the OAuth token from.

Remarks

The URL to refresh the OAuth token from. In OAuth 2.0, this URL is where the refresh token is exchanged for a new access token when the old access token expires.

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OAuthRequestTokenURL

The URL the service provides to retrieve request tokens from. This is required in OAuth 1.0.

Remarks

The URL the service provides to retrieve request tokens from. This is required in OAuth 1.0. In OAuth 1.0, this is the URL where the app makes a request for the request token.

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AuthToken

The authentication token used to request and obtain the OAuth Access Token.

Remarks

This property is required only when performing headless authentication in OAuth 1.0. It can be obtained from the GetOAuthAuthorizationUrl stored procedure.

It can be supplied alongside the AuthKey in the GetOAuthAccessToken stored procedure to obtain the OAuthAccessToken.

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AuthKey

The authentication secret used to request and obtain the OAuth Access Token.

Remarks

This property is required only when performing headless authentication in OAuth 1.0. It can be obtained from the GetOAuthAuthorizationUrl stored procedure.

It can be supplied alongside the AuthToken in the GetOAuthAccessToken stored procedure to obtain the OAuthAccessToken.

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OAuthParams

A comma-separated list of other parameters to submit in the request for the OAuth access token in the format paramname=value.

Remarks

A comma-separated list of other parameters to submit in the request for the OAuth access token in the format paramname=value.

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JWT OAuth

This section provides a complete list of the JWT OAuth properties you can configure in the connection string for this provider.


PropertyDescription
OAuthJWTCertThe JWT Certificate store.
OAuthJWTCertTypeThe type of key store containing the JWT Certificate.
OAuthJWTCertPasswordThe password for the OAuth JWT certificate.
OAuthJWTCertSubjectThe subject of the OAuth JWT certificate.
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OAuthJWTCert

The JWT Certificate store.

Remarks

The name of the certificate store for the client certificate.

The OAuthJWTCertType field specifies the type of the certificate store specified by OAuthJWTCert. If the store is password protected, specify the password in OAuthJWTCertPassword.

OAuthJWTCert is used in conjunction with the OAuthJWTCertSubject field in order to specify client certificates. If OAuthJWTCert has a value, and OAuthJWTCertSubject is set, a search for a certificate is initiated. Please refer to the OAuthJWTCertSubject field for details.

Designations of certificate stores are platform-dependent.

The following are designations of the most common User and Machine certificate stores in Windows:

MYA certificate store holding personal certificates with their associated private keys.
CACertifying authority certificates.
ROOTRoot certificates.
SPCSoftware publisher certificates.

In Java, the certificate store normally is a file containing certificates and optional private keys.

When the certificate store type is PFXFile, this property must be set to the name of the file. When the type is PFXBlob, the property must be set to the binary contents of a PFX file (i.e. PKCS12 certificate store).

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OAuthJWTCertType

The type of key store containing the JWT Certificate.

Remarks

This property can take one of the following values:

USERFor Windows, this specifies that the certificate store is a certificate store owned by the current user. Note: This store type is not available in Java.
MACHINEFor Windows, this specifies that the certificate store is a machine store. Note: this store type is not available in Java.
PFXFILEThe certificate store is the name of a PFX (PKCS12) file containing certificates.
PFXBLOBThe certificate store is a string (base-64-encoded) representing a certificate store in PFX (PKCS12) format.
JKSFILEThe certificate store is the name of a Java key store (JKS) file containing certificates. Note: this store type is only available in Java.
JKSBLOBThe certificate store is a string (base-64-encoded) representing a certificate store in Java key store (JKS) format. Note: this store type is only available in Java.
PEMKEY_FILEThe certificate store is the name of a PEM-encoded file that contains a private key and an optional certificate.
PEMKEY_BLOBThe certificate store is a string (base64-encoded) that contains a private key and an optional certificate.
PUBLIC_KEY_FILEThe certificate store is the name of a file that contains a PEM- or DER-encoded public key certificate.
PUBLIC_KEY_BLOBThe certificate store is a string (base-64-encoded) that contains a PEM- or DER-encoded public key certificate.
SSHPUBLIC_KEY_FILEThe certificate store is the name of a file that contains an SSH-style public key.
SSHPUBLIC_KEY_BLOBThe certificate store is a string (base-64-encoded) that contains an SSH-style public key.
P7BFILEThe certificate store is the name of a PKCS7 file containing certificates.
PPKFILEThe certificate store is the name of a file that contains a PPK (PuTTY Private Key).
XMLFILEThe certificate store is the name of a file that contains a certificate in XML format.
XMLBLOBThe certificate store is a string that contains a certificate in XML format.

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OAuthJWTCertPassword

The password for the OAuth JWT certificate.

Remarks

If the certificate store is of a type that requires a password, this property is used to specify that password in order to open the certificate store.

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OAuthJWTCertSubject

The subject of the OAuth JWT certificate.

Remarks

When loading a certificate the subject is used to locate the certificate in the store.

If an exact match is not found, the store is searched for subjects containing the value of the property.

If a match is still not found, the property is set to an empty string, and no certificate is selected.

The special value "*" picks the first certificate in the certificate store.

The certificate subject is a comma separated list of distinguished name fields and values. For instance "CN=www.server.com, OU=test, C=US, [email protected]". Common fields and their meanings are displayed below.

FieldMeaning
CNCommon Name. This is commonly a host name like www.server.com.
OOrganization
OUOrganizational Unit
LLocality
SState
CCountry
EEmail Address

If a field value contains a comma it must be quoted.

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SSL

This section provides a complete list of the SSL properties you can configure in the connection string for this provider.


PropertyDescription
SSLClientCertThe TLS/SSL client certificate store for SSL Client Authentication (2-way SSL).
SSLClientCertTypeThe type of key store containing the TLS/SSL client certificate.
SSLClientCertPasswordThe password for the TLS/SSL client certificate.
SSLClientCertSubjectThe subject of the TLS/SSL client certificate.
SSLServerCertThe certificate to be accepted from the server when connecting using TLS/SSL.
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SSLClientCert

The TLS/SSL client certificate store for SSL Client Authentication (2-way SSL).

Remarks

The name of the certificate store for the client certificate.

The SSLClientCertType field specifies the type of the certificate store specified by SSLClientCert. If the store is password protected, specify the password in SSLClientCertPassword.

SSLClientCert is used in conjunction with the SSLClientCertSubject field in order to specify client certificates. If SSLClientCert has a value, and SSLClientCertSubject is set, a search for a certificate is initiated. See SSLClientCertSubject for more information.

Designations of certificate stores are platform-dependent.

The following are designations of the most common User and Machine certificate stores in Windows:

MYA certificate store holding personal certificates with their associated private keys.
CACertifying authority certificates.
ROOTRoot certificates.
SPCSoftware publisher certificates.

In Java, the certificate store normally is a file containing certificates and optional private keys.

When the certificate store type is PFXFile, this property must be set to the name of the file. When the type is PFXBlob, the property must be set to the binary contents of a PFX file (for example, PKCS12 certificate store).

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SSLClientCertType

The type of key store containing the TLS/SSL client certificate.

Remarks

This property can take one of the following values:

USER - defaultFor Windows, this specifies that the certificate store is a certificate store owned by the current user. Note that this store type is not available in Java.
MACHINEFor Windows, this specifies that the certificate store is a machine store. Note that this store type is not available in Java.
PFXFILEThe certificate store is the name of a PFX (PKCS12) file containing certificates.
PFXBLOBThe certificate store is a string (base-64-encoded) representing a certificate store in PFX (PKCS12) format.
JKSFILEThe certificate store is the name of a Java key store (JKS) file containing certificates. Note that this store type is only available in Java.
JKSBLOBThe certificate store is a string (base-64-encoded) representing a certificate store in JKS format. Note that this store type is only available in Java.
PEMKEY_FILEThe certificate store is the name of a PEM-encoded file that contains a private key and an optional certificate.
PEMKEY_BLOBThe certificate store is a string (base64-encoded) that contains a private key and an optional certificate.
PUBLIC_KEY_FILEThe certificate store is the name of a file that contains a PEM- or DER-encoded public key certificate.
PUBLIC_KEY_BLOBThe certificate store is a string (base-64-encoded) that contains a PEM- or DER-encoded public key certificate.
SSHPUBLIC_KEY_FILEThe certificate store is the name of a file that contains an SSH-style public key.
SSHPUBLIC_KEY_BLOBThe certificate store is a string (base-64-encoded) that contains an SSH-style public key.
P7BFILEThe certificate store is the name of a PKCS7 file containing certificates.
PPKFILEThe certificate store is the name of a file that contains a PuTTY Private Key (PPK).
XMLFILEThe certificate store is the name of a file that contains a certificate in XML format.
XMLBLOBThe certificate store is a string that contains a certificate in XML format.

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SSLClientCertPassword

The password for the TLS/SSL client certificate.

Remarks

If the certificate store is of a type that requires a password, this property is used to specify that password to open the certificate store.

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SSLClientCertSubject

The subject of the TLS/SSL client certificate.

Remarks

When loading a certificate the subject is used to locate the certificate in the store.

If an exact match is not found, the store is searched for subjects containing the value of the property. If a match is still not found, the property is set to an empty string, and no certificate is selected.

The special value "*" picks the first certificate in the certificate store.

The certificate subject is a comma separated list of distinguished name fields and values. For example, "CN=www.server.com, OU=test, C=US, [email protected]". The common fields and their meanings are shown below.

FieldMeaning
CNCommon Name. This is commonly a host name like www.server.com.
OOrganization
OUOrganizational Unit
LLocality
SState
CCountry
EEmail Address

If a field value contains a comma, it must be quoted.

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SSLServerCert

The certificate to be accepted from the server when connecting using TLS/SSL.

Remarks

If using a TLS/SSL connection, this property can be used to specify the TLS/SSL certificate to be accepted from the server. Any other certificate that is not trusted by the machine is rejected.

This property can take the following forms:

Description Example
A full PEM Certificate (example shortened for brevity) -----BEGIN CERTIFICATE----- MIIChTCCAe4CAQAwDQYJKoZIhv......Qw== -----END CERTIFICATE-----
A path to a local file containing the certificate C:\cert.cer
The public key (example shortened for brevity) -----BEGIN RSA PUBLIC KEY----- MIGfMA0GCSq......AQAB -----END RSA PUBLIC KEY-----
The MD5 Thumbprint (hex values can also be either space or colon separated) ecadbdda5a1529c58a1e9e09828d70e4
The SHA1 Thumbprint (hex values can also be either space or colon separated) 34a929226ae0819f2ec14b4a3d904f801cbb150d

If not specified, any certificate trusted by the machine is accepted.

Use '*' to signify to accept all certificates. Note that this is not recommended due to security concerns.

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Firewall

This section provides a complete list of the Firewall properties you can configure in the connection string for this provider.


PropertyDescription
FirewallTypeThe protocol used by a proxy-based firewall.
FirewallServerThe name or IP address of a proxy-based firewall.
FirewallPortThe TCP port for a proxy-based firewall.
FirewallUserThe user name to use to authenticate with a proxy-based firewall.
FirewallPasswordA password used to authenticate to a proxy-based firewall.
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FirewallType

The protocol used by a proxy-based firewall.

Remarks

This property specifies the protocol that the Sync App will use to tunnel traffic through the FirewallServer proxy. Note that by default, the Sync App connects to the system proxy; to disable this behavior and connect to one of the following proxy types, set ProxyAutoDetect to false.

Type Default Port Description
TUNNEL 80 When this is set, the Sync App opens a connection to GraphQL and traffic flows back and forth through the proxy.
SOCKS4 1080 When this is set, the Sync App sends data through the SOCKS 4 proxy specified by FirewallServer and FirewallPort and passes the FirewallUser value to the proxy, which determines if the connection request should be granted.
SOCKS5 1080 When this is set, the Sync App sends data through the SOCKS 5 proxy specified by FirewallServer and FirewallPort. If your proxy requires authentication, set FirewallUser and FirewallPassword to credentials the proxy recognizes.

To connect to HTTP proxies, use ProxyServer and ProxyPort. To authenticate to HTTP proxies, use ProxyAuthScheme, ProxyUser, and ProxyPassword.

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FirewallServer

The name or IP address of a proxy-based firewall.

Remarks

This property specifies the IP address, DNS name, or host name of a proxy allowing traversal of a firewall. The protocol is specified by FirewallType: Use FirewallServer with this property to connect through SOCKS or do tunneling. Use ProxyServer to connect to an HTTP proxy.

Note that the Sync App uses the system proxy by default. To use a different proxy, set ProxyAutoDetect to false.

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FirewallPort

The TCP port for a proxy-based firewall.

Remarks

This specifies the TCP port for a proxy allowing traversal of a firewall. Use FirewallServer to specify the name or IP address. Specify the protocol with FirewallType.

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FirewallUser

The user name to use to authenticate with a proxy-based firewall.

Remarks

The FirewallUser and FirewallPassword properties are used to authenticate against the proxy specified in FirewallServer and FirewallPort, following the authentication method specified in FirewallType.

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FirewallPassword

A password used to authenticate to a proxy-based firewall.

Remarks

This property is passed to the proxy specified by FirewallServer and FirewallPort, following the authentication method specified by FirewallType.

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Proxy

This section provides a complete list of the Proxy properties you can configure in the connection string for this provider.


PropertyDescription
ProxyAutoDetectThis indicates whether to use the system proxy settings or not.
ProxyServerThe hostname or IP address of a proxy to route HTTP traffic through.
ProxyPortThe TCP port the ProxyServer proxy is running on.
ProxyAuthSchemeThe authentication type to use to authenticate to the ProxyServer proxy.
ProxyUserA user name to be used to authenticate to the ProxyServer proxy.
ProxyPasswordA password to be used to authenticate to the ProxyServer proxy.
ProxySSLTypeThe SSL type to use when connecting to the ProxyServer proxy.
ProxyExceptionsA semicolon separated list of destination hostnames or IPs that are exempt from connecting through the ProxyServer .
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ProxyAutoDetect

This indicates whether to use the system proxy settings or not.

Remarks

This takes precedence over other proxy settings, so you'll need to set ProxyAutoDetect to FALSE in order use custom proxy settings.

To connect to an HTTP proxy, see ProxyServer. For other proxies, such as SOCKS or tunneling, see FirewallType.

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ProxyServer

The hostname or IP address of a proxy to route HTTP traffic through.

Remarks

The hostname or IP address of a proxy to route HTTP traffic through. The Sync App can use the HTTP, Windows (NTLM), or Kerberos authentication types to authenticate to an HTTP proxy.

If you need to connect through a SOCKS proxy or tunnel the connection, see FirewallType.

By default, the Sync App uses the system proxy. If you need to use another proxy, set ProxyAutoDetect to false.

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ProxyPort

The TCP port the ProxyServer proxy is running on.

Remarks

The port the HTTP proxy is running on that you want to redirect HTTP traffic through. Specify the HTTP proxy in ProxyServer. For other proxy types, see FirewallType.

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ProxyAuthScheme

The authentication type to use to authenticate to the ProxyServer proxy.

Remarks

This value specifies the authentication type to use to authenticate to the HTTP proxy specified by ProxyServer and ProxyPort.

Note that the Sync App will use the system proxy settings by default, without further configuration needed; if you want to connect to another proxy, you will need to set ProxyAutoDetect to false, in addition to ProxyServer and ProxyPort. To authenticate, set ProxyAuthScheme and set ProxyUser and ProxyPassword, if needed.

The authentication type can be one of the following:

  • BASIC: The Sync App performs HTTP BASIC authentication.
  • DIGEST: The Sync App performs HTTP DIGEST authentication.
  • NEGOTIATE: The Sync App retrieves an NTLM or Kerberos token based on the applicable protocol for authentication.
  • PROPRIETARY: The Sync App does not generate an NTLM or Kerberos token. You must supply this token in the Authorization header of the HTTP request.

If you need to use another authentication type, such as SOCKS 5 authentication, see FirewallType.

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ProxyUser

A user name to be used to authenticate to the ProxyServer proxy.

Remarks

The ProxyUser and ProxyPassword options are used to connect and authenticate against the HTTP proxy specified in ProxyServer.

You can select one of the available authentication types in ProxyAuthScheme. If you are using HTTP authentication, set this to the user name of a user recognized by the HTTP proxy. If you are using Windows or Kerberos authentication, set this property to a user name in one of the following formats:

user@domain
domain\user

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ProxyPassword

A password to be used to authenticate to the ProxyServer proxy.

Remarks

This property is used to authenticate to an HTTP proxy server that supports NTLM (Windows), Kerberos, or HTTP authentication. To specify the HTTP proxy, you can set ProxyServer and ProxyPort. To specify the authentication type, set ProxyAuthScheme.

If you are using HTTP authentication, additionally set ProxyUser and ProxyPassword to HTTP proxy.

If you are using NTLM authentication, set ProxyUser and ProxyPassword to your Windows password. You may also need these to complete Kerberos authentication.

For SOCKS 5 authentication or tunneling, see FirewallType.

By default, the Sync App uses the system proxy. If you want to connect to another proxy, set ProxyAutoDetect to false.

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ProxySSLType

The SSL type to use when connecting to the ProxyServer proxy.

Remarks

This property determines when to use SSL for the connection to an HTTP proxy specified by ProxyServer. This value can be AUTO, ALWAYS, NEVER, or TUNNEL. The applicable values are the following:

AUTODefault setting. If the URL is an HTTPS URL, the Sync App will use the TUNNEL option. If the URL is an HTTP URL, the component will use the NEVER option.
ALWAYSThe connection is always SSL enabled.
NEVERThe connection is not SSL enabled.
TUNNELThe connection is through a tunneling proxy. The proxy server opens a connection to the remote host and traffic flows back and forth through the proxy.

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ProxyExceptions

A semicolon separated list of destination hostnames or IPs that are exempt from connecting through the ProxyServer .

Remarks

The ProxyServer is used for all addresses, except for addresses defined in this property. Use semicolons to separate entries.

Note that the Sync App uses the system proxy settings by default, without further configuration needed; if you want to explicitly configure proxy exceptions for this connection, you need to set ProxyAutoDetect = false, and configure ProxyServer and ProxyPort. To authenticate, set ProxyAuthScheme and set ProxyUser and ProxyPassword, if needed.

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Logging

This section provides a complete list of the Logging properties you can configure in the connection string for this provider.


PropertyDescription
LogModulesCore modules to be included in the log file.
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LogModules

Core modules to be included in the log file.

Remarks

Only the modules specified (separated by ';') will be included in the log file. By default all modules are included.

See the Logging page for an overview.

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Schema

This section provides a complete list of the Schema properties you can configure in the connection string for this provider.


PropertyDescription
LocationA path to the directory that contains the schema files defining tables, views, and stored procedures.
BrowsableSchemasThis property restricts the schemas reported to a subset of the available schemas. For example, BrowsableSchemas=SchemaA,SchemaB,SchemaC.
TablesThis property restricts the tables reported to a subset of the available tables. For example, Tables=TableA,TableB,TableC.
ViewsRestricts the views reported to a subset of the available tables. For example, Views=ViewA,ViewB,ViewC.
ExpandArgumentsDepthThis property is used to determine how far the provider should search for columns inside the arguments of type INPUT_OBJECT.
ExpandTablesDepthThis property is used to determine the depth of the child tables.
ExpandTemporaryTablesDepthThis property is used to determine the depth of the child temporary tables. Only works if ExposeDynamicProcedures is set to true.
ExpandColumnsDepthThis property is used to determine how far the provider should search for columns inside the GraphQL objects.
IncludeDeprecatedMetadataThis property is used to determine whether the provider should expose deprecated tables and columns or not.
ExposeDynamicProceduresThis property is used to determine whether the provider should expose mutations as dynamic procedures or not.
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Location

A path to the directory that contains the schema files defining tables, views, and stored procedures.

Remarks

The path to a directory which contains the schema files for the Sync App (.rsd files for tables and views, .rsb files for stored procedures). The folder location can be a relative path from the location of the executable. The Location property is only needed if you want to customize definitions (for example, change a column name, ignore a column, and so on) or extend the data model with new tables, views, or stored procedures.

If left unspecified, the default location is "%APPDATA%\\CData\\GraphQL Data Provider\\Schema" with %APPDATA% being set to the user's configuration directory:

Platform %APPDATA%
Windows The value of the APPDATA environment variable
Linux ~/.config

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BrowsableSchemas

This property restricts the schemas reported to a subset of the available schemas. For example, BrowsableSchemas=SchemaA,SchemaB,SchemaC.

Remarks

Listing the schemas from databases can be expensive. Providing a list of schemas in the connection string improves the performance.

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Tables

This property restricts the tables reported to a subset of the available tables. For example, Tables=TableA,TableB,TableC.

Remarks

Listing the tables from some databases can be expensive. Providing a list of tables in the connection string improves the performance of the Sync App.

This property can also be used as an alternative to automatically listing views if you already know which ones you want to work with and there would otherwise be too many to work with.

Specify the tables you want in a comma-separated list. Each table should be a valid SQL identifier with any special characters escaped using square brackets, double-quotes or backticks. For example, Tables=TableA,[TableB/WithSlash],WithCatalog.WithSchema.`TableC With Space`.

Note that when connecting to a data source with multiple schemas or catalogs, you will need to provide the fully qualified name of the table in this property, as in the last example here, to avoid ambiguity between tables that exist in multiple catalogs or schemas.

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Views

Restricts the views reported to a subset of the available tables. For example, Views=ViewA,ViewB,ViewC.

Remarks

Listing the views from some databases can be expensive. Providing a list of views in the connection string improves the performance of the Sync App.

This property can also be used as an alternative to automatically listing views if you already know which ones you want to work with and there would otherwise be too many to work with.

Specify the views you want in a comma-separated list. Each view should be a valid SQL identifier with any special characters escaped using square brackets, double-quotes or backticks. For example, Views=ViewA,[ViewB/WithSlash],WithCatalog.WithSchema.`ViewC With Space`.

Note that when connecting to a data source with multiple schemas or catalogs, you will need to provide the fully qualified name of the table in this property, as in the last example here, to avoid ambiguity between tables that exist in multiple catalogs or schemas.

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ExpandArgumentsDepth

This property is used to determine how far the provider should search for columns inside the arguments of type INPUT_OBJECT.

Remarks

This property is used to determine how far the Sync App should search for columns inside the arguments of type INPUT_OBJECT. For example:

{
    "variables": {
        "input": {
            "filters": {
                "type": "SUPPLIER"
            }
        }
    },
    "query": "query($input:FilteredCompaniesInput!) {\r\nfilteredCompanies(input:$input) {\r\nid:id\r\nvalue:value\r\n}\r\n}\r\n"
}
for the SQL query:
SELECT id,value FROM filteredCompanies WHERE type='SUPPLIER'
In this case the nested "FilteredCompaniesInput" is itself of type INPUT_OBJECT. In a column search, the ExpandColumnsDepth property controls how many nested levels of type INPUT_OBJECT are subjected to searching.

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ExpandTablesDepth

This property is used to determine the depth of the child tables.

Remarks

This property is used to determine the depth of the child tables.

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ExpandTemporaryTablesDepth

This property is used to determine the depth of the child temporary tables. Only works if ExposeDynamicProcedures is set to true.

Remarks

This property is used to determine the depth of the child temporary tables. Only works if ExposeDynamicProcedures is set to true.

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ExpandColumnsDepth

This property is used to determine how far the provider should search for columns inside the GraphQL objects.

Remarks

This property is used to determine how far the Sync App should search for columns inside the GraphQL objects.

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IncludeDeprecatedMetadata

This property is used to determine whether the provider should expose deprecated tables and columns or not.

Remarks

This property is used to determine whether the Sync App should expose deprecated tables and columns or not.

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ExposeDynamicProcedures

This property is used to determine whether the provider should expose mutations as dynamic procedures or not.

Remarks

This property is used to determine whether the Sync App should expose mutations as dynamic procedures or not.

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Miscellaneous

This section provides a complete list of the Miscellaneous properties you can configure in the connection string for this provider.


PropertyDescription
CustomHeadersOther headers as determined by the user (optional).
GenerateSchemaFilesIndicates the user preference as to when schemas should be generated and saved.
MaxRowsLimits the number of rows returned when no aggregation or GROUP BY is used in the query. This takes precedence over LIMIT clauses.
OtherThese hidden properties are used only in specific use cases.
PagesizeThe maximum number of results to return per page from GraphQL.
PseudoColumnsThis property indicates whether or not to include pseudo columns as columns to the table.
TimeoutThe value in seconds until the timeout error is thrown, canceling the operation.
UserDefinedViewsA filepath pointing to the JSON configuration file containing your custom views.
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CustomHeaders

Other headers as determined by the user (optional).

Remarks

This property can be set to a string of headers to be appended to the HTTP request headers created from other properties, like ContentType, From, and so on.

The headers must be of the format "header: value" as described in the HTTP specifications. Header lines should be separated by the carriage return and line feed (CRLF) characters.

Use this property with caution. If this property contains invalid headers, HTTP requests may fail.

This property is useful for fine-tuning the functionality of the Sync App to integrate with specialized or nonstandard APIs.

GraphQL Connector for CData Sync

GenerateSchemaFiles

Indicates the user preference as to when schemas should be generated and saved.

Remarks

This property outputs schemas to .rsd files in the path specified by Location.

Available settings are the following:

  • Never: A schema file will never be generated.
  • OnUse: A schema file will be generated the first time a table is referenced, provided the schema file for the table does not already exist.
  • OnStart: A schema file will be generated at connection time for any tables that do not currently have a schema file.
  • OnCreate: A schema file will be generated by when running a CREATE TABLE SQL query.
Note that if you want to regenerate a file, you will first need to delete it.

Generate Schemas with SQL

When you set GenerateSchemaFiles to OnUse, the Sync App generates schemas as you execute SELECT queries. Schemas are generated for each table referenced in the query.

When you set GenerateSchemaFiles to OnCreate, schemas are only generated when a CREATE TABLE query is executed.

Generate Schemas on Connection

Another way to use this property is to obtain schemas for every table in your database when you connect. To do so, set GenerateSchemaFiles to OnStart and connect.

GraphQL Connector for CData Sync

MaxRows

Limits the number of rows returned when no aggregation or GROUP BY is used in the query. This takes precedence over LIMIT clauses.

Remarks

Limits the number of rows returned when no aggregation or GROUP BY is used in the query. This takes precedence over LIMIT clauses.

GraphQL Connector for CData Sync

Other

These hidden properties are used only in specific use cases.

Remarks

The properties listed below are available for specific use cases. Normal driver use cases and functionality should not require these properties.

Specify multiple properties in a semicolon-separated list.

Integration and Formatting

DefaultColumnSizeSets the default length of string fields when the data source does not provide column length in the metadata. The default value is 2000.
ConvertDateTimeToGMTDetermines whether to convert date-time values to GMT, instead of the local time of the machine.
RecordToFile=filenameRecords the underlying socket data transfer to the specified file.

GraphQL Connector for CData Sync

Pagesize

The maximum number of results to return per page from GraphQL.

Remarks

The Pagesize property affects the maximum number of results to return per page from GraphQL. Setting a higher value may result in better performance at the cost of additional memory eaten up per page consumed. The pageSize is proportional to the GraphQL query cost.

GraphQL Connector for CData Sync

PseudoColumns

This property indicates whether or not to include pseudo columns as columns to the table.

Remarks

This setting is particularly helpful in Entity Framework, which does not allow you to set a value for a pseudo column unless it is a table column. The value of this connection setting is of the format "Table1=Column1, Table1=Column2, Table2=Column3". You can use the "*" character to include all tables and all columns; for example, "*=*".

GraphQL Connector for CData Sync

Timeout

The value in seconds until the timeout error is thrown, canceling the operation.

Remarks

If Timeout = 0, operations do not time out. The operations run until they complete successfully or until they encounter an error condition.

If Timeout expires and the operation is not yet complete, the Sync App throws an exception.

GraphQL Connector for CData Sync

UserDefinedViews

A filepath pointing to the JSON configuration file containing your custom views.

Remarks

User Defined Views are defined in a JSON-formatted configuration file called UserDefinedViews.json. The Sync App automatically detects the views specified in this file.

You can also have multiple view definitions and control them using the UserDefinedViews connection property. When you use this property, only the specified views are seen by the Sync App.

This User Defined View configuration file is formatted as follows:

  • Each root element defines the name of a view.
  • Each root element contains a child element, called query, which contains the custom SQL query for the view.

For example:

{
	"MyView": {
		"query": "SELECT * FROM Users WHERE MyColumn = 'value'"
	},
	"MyView2": {
		"query": "SELECT * FROM MyTable WHERE Id IN (1,2,3)"
	}
}
Use the UserDefinedViews connection property to specify the location of your JSON configuration file. For example:
"UserDefinedViews", C:\Users\yourusername\Desktop\tmp\UserDefinedViews.json
Note that the specified path is not embedded in quotation marks.

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