Cloud

Build 25.0.9539
  • Apache Phoenix
      • Before You Connect
    • Getting Started
      • Establishing a Connection
      • Using Kerberos
      • Fine-Tuning Data Access
      • Commits
      • SSL Configuration
      • Firewall and Proxy
    • Connection String Options
      • Authentication
        • AuthScheme
        • User
        • Password
        • ClusterName
        • ImpersonationUser
      • Connection
        • URL
        • EnableSchemas
        • Schema
        • ServerConfigurations
        • Version
        • LoadBalanceStrategy
        • DatabaseProductName
      • SSL
        • SSLServerCert
      • Logging
        • Verbosity
      • Schema
        • BrowsableSchemas
      • Miscellaneous
        • AllowPreparedStatement
        • EnableCaseSensitivity
        • MaxRows
        • Pagesize
        • ThrowsKeyNotFound
        • Timeout
    • Third Party Copyrights

Apache Phoenix - CData Cloud

Overview

CData Cloud offers access to Apache Phoenix across several standard services and protocols, in a cloud-hosted solution. Any application that can connect to a SQL Server database can connect to Apache Phoenix through CData Cloud.

CData Cloud allows you to standardize and configure connections to Apache Phoenix as though it were any other OData endpoint or standard SQL Server.

Key Features

  • Full SQL Support: Apache Phoenix appears as standard relational databases, allowing you to perform operations - Filter, Group, Join, etc. - using standard SQL, regardless of whether these operations are supported by the underlying API.
  • CRUD Support: Both read and write operations are supported, restricted only by security settings that you can configure in Cloud or downstream in the source itself.
  • Secure Access: The administrator can create users and define their access to specific databases and read-only operations or grant full read & write privileges.
  • Comprehensive Data Model & Dynamic Discovery: CData Cloud provides comprehensive access to all of the data exposed in the underlying data source, including full access to dynamic data and easily searchable metadata.

CData Cloud

Before You Connect

Before You Connect

Different distributions contain different interfaces, different means of starting and stopping the Phoenix Query server, and different default port settings.

In most distributions, if there is at least one active instance of HBase, and possibly also Zookeeper, you can use the following command to start the Phoenix Query Server in the background:

queryserver.py start

For further information, see your distribution's documentation.

CData Cloud

Getting Started

This page provides a guide to Establishing a Connection to Apache Phoenix in CData Cloud, as well as information on the available resources, and a reference to the available connection properties.

Connecting to Apache Phoenix

Establishing a Connection shows how to authenticate to Apache Phoenix and configure any necessary connection properties to create a database in CData Cloud

Accessing Data from CData Cloud Services

Accessing data from Apache Phoenix through the available standard services and CData Cloud administration is documented in further details in the CData Cloud Documentation.

CData Cloud

Establishing a Connection

Connect to Apache Phoenix by selecting the corresponding icon in the Database tab. Required properties are listed under Settings. The Advanced tab lists connection properties that are not typically required.

Connecting to Apache Phoenix

The CData Cloud connects to Apache Phoenix via the Phoenix Query Server. Set the URL connection property to connect to Apache Phoenix.

The URL property will typically be the host name or IP address of the server hosting Apache Phoenix followed by the port, for example: http://localhost:8765.

Authenticating to Apache Phoenix

By default, no authentication will be used (plain). If authentication is configured for your server, you can configure one of the following authentication methods.

Basic

If your instance of Apache Phoenix has set up the basic authentication layer, set the following to authenticate:

  • AuthScheme: Set this to Basic.
  • User: Set this to the user of your Apache Phoenix instance.
  • Password: Set this to the password of your Apache Phoenix instance.

Azure HDInsight

To authenticate to Azure HDInsight, set the following:

  • AuthScheme: Set this to AzureHDInsight.
  • User: Set this to the cluster username that you specified when creating the cluster on Azure HDInsight.
  • Password: Set this to the cluster password that you specified when creating the cluster on Azure HDInsight.
  • ClusterName: Set this to the name of the cluster containing your Azure HDInsight instance.

All calls are sent to a gateway which picks one of the nodes to handle the request. Accessing the specific nodes is possible if you are running within the internal virtual network of the cluster.

Kerberos

Set the AuthScheme to Negotiate. See Using Kerberos for details on how to authenticate with Kerberos.

CData Cloud

Using Kerberos

Kerberos

To authenticate to Apache Phoenix with Kerberos, set AuthScheme to NEGOTIATE.

Authenticating to Apache Phoenix via Kerberos requires you to define authentication properties and to choose how Kerberos should retrieve authentication tickets.

Retrieve Kerberos Tickets

Kerberos tickets are used to authenticate the requester's identity. The use of tickets instead of formal logins/passwords eliminates the need to store passwords locally or send them over a network. Users are reauthenticated (tickets are refreshed) whenever they log in at their local computer or enter kinit USER at the command prompt.

The Cloud provides three ways to retrieve the required Kerberos ticket, depending on whether or not the KRB5CCNAME and/or KerberosKeytabFile variables exist in your environment.

MIT Kerberos Credential Cache File

This option enables you to use the MIT Kerberos Ticket Manager or kinit command to get tickets. With this option there is no need to set the User or Password connection properties.

This option requires that KRB5CCNAME has been created in your system.

To enable ticket retrieval via MIT Kerberos Credential Cache Files:

  1. Ensure that the KRB5CCNAME variable is present in your environment.
  2. Set KRB5CCNAME to a path that points to your credential cache file. (For example, C:\krb_cache\krb5cc_0 or /tmp/krb5cc_0.) The credential cache file is created when you use the MIT Kerberos Ticket Manager to generate your ticket.
  3. To obtain a ticket:
    1. Open the MIT Kerberos Ticket Manager application.
    2. Click Get Ticket.
    3. Enter your principal name and password.
    4. Click OK.

    If the ticket is successfully obtained, the ticket information appears in Kerberos Ticket Manager and is stored in the credential cache file.

The Cloud uses the cache file to obtain the Kerberos ticket to connect to Apache Phoenix.

Note: If you would prefer not to edit KRB5CCNAME, you can use the KerberosTicketCache property to set the file path manually. After this is set, the Cloud uses the specified cache file to obtain the Kerberos ticket to connect to Apache Phoenix.

Keytab File

If your environment lacks the KRB5CCNAME environment variable, you can retrieve a Kerberos ticket using a Keytab File.

To use this method, set the User property to the desired username, and set the KerberosKeytabFile property to a file path pointing to the keytab file associated with the user.

User and Password

If your environment lacks the KRB5CCNAME environment variable and the KerberosKeytabFile property has not been set, you can retrieve a ticket using a user and password combination.

To use this method, set the User and Password properties to the user/password combination that you use to authenticate with Apache Phoenix.

Enabling Cross-Realm Authentication

More complex Kerberos environments can require cross-realm authentication where multiple realms and KDC servers are used. For example, they might use one realm/KDC for user authentication, and another realm/KDC for obtaining the service ticket.

To enable this kind of cross-realm authentication, set the KerberosRealm and KerberosKDC properties to the values required for user authentication. Also, set the KerberosServiceRealm and KerberosServiceKDC properties to the values required to obtain the service ticket.

CData Cloud

Fine-Tuning Data Access

Enabling Multiple Schemas

By default, the CData Cloud will not use multiple schemas. The driver can be configured to work with other schemas if EnableSchemas is set to true.

The necessary changes must be made on the server-side of HBase and ApachePhoenix. Please consult the docs for more information.

Fine Tune Driver Performance

The connection property Pagesize can be used to control the size of a page (frame) returned from the API.

Setting a lower number will result in more requests made for data retrieval, while setting a bigger number will result in fewer requests. Setting a really big number can also result in OutOfMemory errors.

Batch Operations

The driver does extra operations in the background to convert INSERT and update operations to upserts. For performance reasons, it is advised to use upserts in batch operations.

CData Cloud

Commits

Commits

By default, the CData Cloud works in auto commit mode.

That is, any create/update/upsert/delete operation executed, will be automatically auto committed on the server.

The same is true for batch operations as well.

CData Cloud

SSL Configuration

Customizing the SSL Configuration

To enable TLS, set the following:

  • URL: Prefix the connection string with https://

With this configuration, the Cloud attempts to negotiate TLS with the server. The server certificate is validated against the default system trusted certificate store. You can override how the certificate gets validated using the SSLServerCert connection property.

To specify another certificate, see the SSLServerCert connection property.

Client SSL Certificates

The Apache Phoenix Cloud also supports setting client certificates. Set the following to connect using a client certificate.

  • SSLClientCert: The name of the certificate store for the client certificate.
  • SSLClientCertType: The type of key store containing the TLS/SSL client certificate.
  • SSLClientCertPassword: The password for the TLS/SSL client certificate.
  • SSLClientCertSubject: The subject of the TLS/SSL client certificate.

CData Cloud

Firewall and Proxy

Connecting Through a Firewall or Proxy

HTTP Proxies

To authenticate to an HTTP proxy, set the following:

  • ProxyServer: the hostname or IP address of the proxy server that you want to route HTTP traffic through.
  • ProxyPort: the TCP port that the proxy server is running on.
  • ProxyAuthScheme: the authentication method the Cloud uses when authenticating to the proxy server.
  • ProxyUser: the username of a user account registered with the proxy server.
  • ProxyPassword: the password associated with the ProxyUser.

Other Proxies

Set the following properties:

  • To use a proxy-based firewall, set FirewallType, FirewallServer, and FirewallPort.
  • To tunnel the connection, set FirewallType to TUNNEL.
  • To authenticate, specify FirewallUser and FirewallPassword.
  • To authenticate to a SOCKS proxy, additionally set FirewallType to SOCKS5.

CData Cloud

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 scheme used for authentication. Accepted entries are None, and Negotiate (Kerberos). None is the default.
UserSpecifies the authenticating user's user ID.
PasswordSpecifies the authenticating user's password.
ClusterNameThe name of the cluster containing your Azure HDInsight instance.
ImpersonationUserThe user to impersonate while sending requests to the Phoenix Query Server.

Connection


PropertyDescription
URLThe URL to your Apache Phoenix instance. This property overrides the Server/Port/UseSSL connection properties. When the LoadBalanceStrategy is configured, this takes a list of URLs in a comma separated format, for example “URL1,URL2…URLn”.
EnableSchemasSet to true if the Apache Phoenix instance you are authenticating against supports multiple schemas.
SchemaThe schema which will be used by default.
ServerConfigurationsA list of server configuration variables to override the server defaults.
VersionThe version of the Apache Phoenix instance.
LoadBalanceStrategyThe load balancing strategy to be used by the client side load balancer.
DatabaseProductNameSets the name of the database product exposed by the Avatica server. If not set, it is retrieved dynamically.

SSL


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

Logging


PropertyDescription
VerbositySpecifies the verbosity level of the log file, which controls the amount of detail logged. Supported values range from 1 to 5.

Schema


PropertyDescription
BrowsableSchemasOptional setting that restricts the schemas reported to a subset of all available schemas. For example, BrowsableSchemas=SchemaA,SchemaB,SchemaC .

Miscellaneous


PropertyDescription
AllowPreparedStatementPrepare a query statement before its execution.
EnableCaseSensitivityWhen enabled, any source schemas, tables, or columns with the same name but different casing will be automatically given a suffix (_n) to differentiate them. This ensures that case differences are properly handled and prevents naming conflicts.
MaxRowsSpecifies the maximum number of rows the provider requests and returns for all tables and views.
PagesizeThe number of rows which will be returned for each frame request.
ThrowsKeyNotFoundSpecifies whether or not throws an exception if there is no rows updated.
TimeoutSpecifies the maximum time, in seconds, that the provider waits for a server response before throwing a timeout error.
CData Cloud

Authentication

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


PropertyDescription
AuthSchemeThe scheme used for authentication. Accepted entries are None, and Negotiate (Kerberos). None is the default.
UserSpecifies the authenticating user's user ID.
PasswordSpecifies the authenticating user's password.
ClusterNameThe name of the cluster containing your Azure HDInsight instance.
ImpersonationUserThe user to impersonate while sending requests to the Phoenix Query Server.
CData Cloud

AuthScheme

The scheme used for authentication. Accepted entries are None, and Negotiate (Kerberos). None is the default.

Possible Values

None, Basic, Negotiate, AzureHDInsight

Data Type

string

Default Value

"Basic"

Remarks

This field is used to authenticate against the server. Use the following options to select your authentication scheme:

  • None: No authentication is performed.
  • Basic: Basic authentication is performed. Properties User and Password need to be set to perform Basic authentication.
  • Negotiate: If AuthScheme is set to Negotiate, the Cloud will negotiate an authentication mechanism with the server. Set AuthScheme to Negotiate if you want to use Kerberos authentication.
  • AzureHDInsight: If AuthScheme is set to AzureHDInsight, the Cloud will connect to Azure HDInsight. Properties User, Password, and ClusterName need to be set for this to work.

CData Cloud

User

Specifies the authenticating user's user ID.

Data Type

string

Default Value

""

Remarks

The authenticating server requires both User and Password to validate the user's identity.

CData Cloud

Password

Specifies the authenticating user's password.

Data Type

string

Default Value

""

Remarks

The authenticating server requires both User and Password to validate the user's identity.

CData Cloud

ClusterName

The name of the cluster containing your Azure HDInsight instance.

Data Type

string

Default Value

""

Remarks

The name of the cluster containing your Azure HDInsight instance.

CData Cloud

ImpersonationUser

The user to impersonate while sending requests to the Phoenix Query Server.

Data Type

string

Default Value

""

Remarks

The user to impersonate while sending requests to the Phoenix Query Server.

CData Cloud

Connection

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


PropertyDescription
URLThe URL to your Apache Phoenix instance. This property overrides the Server/Port/UseSSL connection properties. When the LoadBalanceStrategy is configured, this takes a list of URLs in a comma separated format, for example “URL1,URL2…URLn”.
EnableSchemasSet to true if the Apache Phoenix instance you are authenticating against supports multiple schemas.
SchemaThe schema which will be used by default.
ServerConfigurationsA list of server configuration variables to override the server defaults.
VersionThe version of the Apache Phoenix instance.
LoadBalanceStrategyThe load balancing strategy to be used by the client side load balancer.
DatabaseProductNameSets the name of the database product exposed by the Avatica server. If not set, it is retrieved dynamically.
CData Cloud

URL

The URL to your Apache Phoenix instance. This property overrides the Server/Port/UseSSL connection properties. When the LoadBalanceStrategy is configured, this takes a list of URLs in a comma separated format, for example “URL1,URL2…URLn”.

Data Type

string

Default Value

""

Remarks

The URL to your Apache Phoenix instance; for example, http://localhost:8765. When the LoadBalanceStrategy is configured, this takes a list of URLs in a comma separated format, for example “URL1,URL2…URLn”. Depending on the load balancing strategy, the client side load balancer selects one of the URLs to connect to.

CData Cloud

EnableSchemas

Set to true if the Apache Phoenix instance you are authenticating against supports multiple schemas.

Data Type

bool

Default Value

false

Remarks

Set to true if the Apache Phoenix instance you are authenticating against supports multiple schemas.

CData Cloud

Schema

The schema which will be used by default.

Data Type

string

Default Value

""

Remarks

The property 'phoenix.schema.isNamespaceMappingEnabled' must be enabled on the server for this to work. Once the property is enabled, all queries will be run against this schema.

CData Cloud

ServerConfigurations

A list of server configuration variables to override the server defaults.

Data Type

string

Default Value

""

Remarks

This property takes a comma-separated list of Apache Phoenix configuration variables. Each value in the comma-separated list will be sent as specified to override the server default values.

See this link for a list of available configurations.

Example: phoenix.stats.updateFrequency=30000,phoenix.query.maxGlobalMemoryPercentage=30

CData Cloud

Version

The version of the Apache Phoenix instance.

Data Type

string

Default Value

"4.9.0"

Remarks

The version of the Apache Phoenix instance.

CData Cloud

LoadBalanceStrategy

The load balancing strategy to be used by the client side load balancer.

Possible Values

None, Random, RoundRobin, ShuffledRoundRobin

Data Type

string

Default Value

"None"

Remarks

The load balancing strategy to be used by the client side load balancer.

> > > >
CData Cloud

DatabaseProductName

Sets the name of the database product exposed by the Avatica server. If not set, it is retrieved dynamically.

Possible Values

Auto, Phoenix, PostgreSQL

Data Type

string

Default Value

"Auto"

Remarks

Specifies the name of the database product that the Avatica server is exposing. Supported values are Phoenix and PostgreSQL. This property is used to adapt API requests and behavior based on the expected product type. If not set, the Cloud attempts to retrieve the product name dynamically from the Avatica server.

CData Cloud

SSL

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


PropertyDescription
SSLServerCertSpecifies the certificate to be accepted from the server when connecting using TLS/SSL.
CData Cloud

SSLServerCert

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

Data Type

string

Default Value

""

Remarks

If you are using a TLS/SSL connection, use this property to specify the TLS/SSL certificate to be accepted from the server. If you specify a value for this property, all other certificates that are not trusted by the machine are 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

Note: It is possible to use '*' to signify that all certificates should be accepted, but due to security concerns this is not recommended.

CData Cloud

Logging

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


PropertyDescription
VerbositySpecifies the verbosity level of the log file, which controls the amount of detail logged. Supported values range from 1 to 5.
CData Cloud

Verbosity

Specifies the verbosity level of the log file, which controls the amount of detail logged. Supported values range from 1 to 5.

Data Type

string

Default Value

"1"

Remarks

This property defines the level of detail the Cloud includes in the log file. Higher verbosity levels increase the detail of the logged information, but may also result in larger log files and slower performance due to the additional data being captured.

The default verbosity level is 1, which is recommended for regular operation. Higher verbosity levels are primarily intended for debugging purposes. For more information on each level, refer to Logging.

When combined with the LogModules property, Verbosity can refine logging to specific categories of information.

CData Cloud

Schema

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


PropertyDescription
BrowsableSchemasOptional setting that restricts the schemas reported to a subset of all available schemas. For example, BrowsableSchemas=SchemaA,SchemaB,SchemaC .
CData Cloud

BrowsableSchemas

Optional setting that restricts the schemas reported to a subset of all available schemas. For example, BrowsableSchemas=SchemaA,SchemaB,SchemaC .

Data Type

string

Default Value

""

Remarks

Listing all available database schemas can take extra time, thus degrading performance. Providing a list of schemas in the connection string saves time and improves performance.

CData Cloud

Miscellaneous

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


PropertyDescription
AllowPreparedStatementPrepare a query statement before its execution.
EnableCaseSensitivityWhen enabled, any source schemas, tables, or columns with the same name but different casing will be automatically given a suffix (_n) to differentiate them. This ensures that case differences are properly handled and prevents naming conflicts.
MaxRowsSpecifies the maximum number of rows the provider requests and returns for all tables and views.
PagesizeThe number of rows which will be returned for each frame request.
ThrowsKeyNotFoundSpecifies whether or not throws an exception if there is no rows updated.
TimeoutSpecifies the maximum time, in seconds, that the provider waits for a server response before throwing a timeout error.
CData Cloud

AllowPreparedStatement

Prepare a query statement before its execution.

Data Type

bool

Default Value

true

Remarks

If the AllowPreparedStatement property is set to false, statements are parsed each time they are executed. Setting this property to false can be useful if you are executing many different queries only once.

CData Cloud

EnableCaseSensitivity

When enabled, any source schemas, tables, or columns with the same name but different casing will be automatically given a suffix (_n) to differentiate them. This ensures that case differences are properly handled and prevents naming conflicts.

Data Type

bool

Default Value

false

Remarks

When enabled, any source schemas, tables, or columns with the same name but different casing will be automatically given a suffix (_n) to differentiate them. This ensures that case differences are properly handled and prevents naming conflicts.

CData Cloud

MaxRows

Specifies the maximum number of rows the provider requests and returns for all tables and views.

Data Type

int

Default Value

-1

Remarks

This maximum applies across all Frames. It is not applied to Frames individually.

CData Cloud

Pagesize

The number of rows which will be returned for each frame request.

Data Type

int

Default Value

1000

Remarks

Setting a lower number will result in more requests made for data retrieval, while setting a really big number could result in OutOfMemory errors.

CData Cloud

ThrowsKeyNotFound

Specifies whether or not throws an exception if there is no rows updated.

Data Type

bool

Default Value

false

Remarks

Specifies whether or not throws an exception if there is no rows updated.

CData Cloud

Timeout

Specifies the maximum time, in seconds, that the provider waits for a server response before throwing a timeout error.

Data Type

int

Default Value

60

Remarks

The timeout applies to each individual communication with the server rather than the entire query or operation. For example, a query could continue running beyond 60 seconds if each paging call completes within the timeout limit.

Timeout is set to 60 seconds by default. To disable timeouts, set this property to 0.

Disabling the timeout allows operations to run indefinitely until they succeed or fail due to other conditions such as server-side timeouts, network interruptions, or resource limits on the server.

Note: Use this property cautiously to avoid long-running operations that could degrade performance or result in unresponsive behavior.

CData Cloud

Third Party Copyrights

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Xamarin SDK

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The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

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4. COMMERCIAL DISTRIBUTION

Commercial distributors of software may accept certain responsibilities with respect to end users, business partners and the like. While this license is intended to facilitate the commercial use of the Program, the Contributor who includes the Program in a commercial product offering should do so in a manner which does not create potential liability for other Contributors. Therefore, if a Contributor includes the Program in a commercial product offering, such Contributor ("Commercial Contributor") hereby agrees to defend and indemnify every other Contributor ("Indemnified Contributor") against any losses, damages and costs (collectively "Losses") arising from claims, lawsuits and other legal actions brought by a third party against the Indemnified Contributor to the extent caused by the acts or omissions of such Commercial Contributor in connection with its distribution of the Program in a commercial product offering. The obligations in this section do not apply to any claims or Losses relating to any actual or alleged intellectual property infringement. In order to qualify, an Indemnified Contributor must: a) promptly notify the Commercial Contributor in writing of such claim, and b) allow the Commercial Contributor to control, and cooperate with the Commercial Contributor in, the defense and any related settlement negotiations. The Indemnified Contributor may participate in any such claim at its own expense.

For example, a Contributor might include the Program in a commercial product offering, Product X. That Contributor is then a Commercial Contributor. If that Commercial Contributor then makes performance claims, or offers warranties related to Product X, those performance claims and warranties are such Commercial Contributor's responsibility alone. Under this section, the Commercial Contributor would have to defend claims against the other Contributors related to those performance claims and warranties, and if a court requires any other Contributor to pay any damages as a result, the Commercial Contributor must pay those damages.

5. NO WARRANTY

EXCEPT AS EXPRESSLY SET FORTH IN THIS AGREEMENT, THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is solely responsible for determining the appropriateness of using and distributing the Program and assumes all risks associated with its exercise of rights under this Agreement, including but not limited to the risks and costs of program errors, compliance with applicable laws, damage to or loss of data, programs or equipment, and unavailability or interruption of operations.

6. DISCLAIMER OF LIABILITY

EXCEPT AS EXPRESSLY SET FORTH IN THIS AGREEMENT, NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

7. GENERAL

If any provision of this Agreement is invalid or unenforceable under applicable law, it shall not affect the validity or enforceability of the remainder of the terms of this Agreement, and without further action by the parties hereto, such provision shall be reformed to the minimum extent necessary to make such provision valid and enforceable.

If Recipient institutes patent litigation against a Contributor with respect to a patent applicable to software (including a cross-claim or counterclaim in a lawsuit), then any patent licenses granted by that Contributor to such Recipient under this Agreement shall terminate as of the date such litigation is filed. In addition, if Recipient institutes patent litigation against any entity (including a cross-claim or counterclaim in a lawsuit) alleging that the Program itself (excluding combinations of the Program with other software or hardware) infringes such Recipient's patent(s), then such Recipient's rights granted under Section 2(b) shall terminate as of the date such litigation is filed.

All Recipient's rights under this Agreement shall terminate if it fails to comply with any of the material terms or conditions of this Agreement and does not cure such failure in a reasonable period of time after becoming aware of such noncompliance. If all Recipient's rights under this Agreement terminate, Recipient agrees to cease use and distribution of the Program as soon as reasonably practicable. However, Recipient's obligations under this Agreement and any licenses granted by Recipient relating to the Program shall continue and survive.

Everyone is permitted to copy and distribute copies of this Agreement, but in order to avoid inconsistency the Agreement is copyrighted and may only be modified in the following manner. The Agreement Steward reserves the right to publish new versions (including revisions) of this Agreement from time to time. No one other than the Agreement Steward has the right to modify this Agreement. IBM is the initial Agreement Steward. IBM may assign the responsibility to serve as the Agreement Steward to a suitable separate entity. Each new version of the Agreement will be given a distinguishing version number. The Program (including Contributions) may always be distributed subject to the version of the Agreement under which it was received. In addition, after a new version of the Agreement is published, Contributor may elect to distribute the Program (including its Contributions) under the new version. Except as expressly stated in Sections 2(a) and 2(b) above, Recipient receives no rights or licenses to the intellectual property of any Contributor under this Agreement, whether expressly, by implication, estoppel or otherwise. All rights in the Program not expressly granted under this Agreement are reserved.

This Agreement is governed by the laws of the State of New York and the intellectual property laws of the United States of America. No party to this Agreement will bring a legal action under this Agreement more than one year after the cause of action arose. Each party waives its rights to a jury trial in any resulting litigation.

protobuf v. 3.5.1

Copyright 2008 Google Inc. All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of Google Inc. nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Code generated by the Protocol Buffer compiler is owned by the owner of the input file used when generating it. This code is not standalone and requires a support library to be linked with it. This support library is itself covered by the above license.

Copyright (c) 2026 CData Software, Inc. - All rights reserved.
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