Loop from a JSON document.

Required Parameters

• jsonpath: The jsonpath of the specified segment.

Optional Parameters

• uri: A JSON file URI.
• handle: The handle of the specified JSON reader.

Output Attributes

• jsonpath: The jsonpath(s) that match the specified input.
• name: The Name of the matched element.
• type: The data type of the matched element.

Example

Consider the JSON data below, which is passed as input data to a Script Connector in CData Arc:

{
    "Car": "Subaru",
    "Features": [
        {
            "name": "Transmission",
            "value": "Manual"
        },
        {
            "name": "Color",
            "value": "Blue"
        },
        {
            "name": "Interior",
            "value": "Leather"
        },
        {
            "name": "Drivetrain",
            "value": "AWD"
        }
    ]
}

In this Script Connector, you can invoke jsonDOMSearch in ArcScript to search the JSON data for the term Interior and assign the corresponding value (Leather) as a header to a message in CData Arc. The ArcScript code below shows an example of how to do this:

<arc:set attr="json.uri" value="[Filepath]" />
<arc:set attr="json.jsonPath" value="/json/Features/" />
<arc:call op="jsonDomSearch" in="json" out="result">
  <!-- jsonpath is a context senstive function in arcscript. If a json document is loaded in a 
       search, jsonpath will return the name of a child relative to the search result -->
  <arc:if exp="[jsonpath('name') | equals('Interior')]">
    <arc:set attr="output.header:interiormaterial" value="[jsonpath(‘value’)]" />
  </arc:if> 
</arc:call>

<arc:set attr="output.filename" value="[Filename]" />
<arc:push item="output" />

After this code executes, CData Arc pushes the file with the newly added headers as output down the flow.