tRESTResponse Standard properties
These properties are used to configure tRESTResponse running in the Standard Job framework.
The Standard tRESTResponse component belongs to the ESB family.
This component is relevant only when used with one of the Talend solutions with ESB, as it should be used with the Service Repository node and the Data Service creation related wizard(s).
Basic settings
| Return Body Type | Select a response body type from Document, String, and Byte in the list. |
| Return status code |
Select a status code from the list to indicate the request status. - <<Custom>>: This option allows you to customize the status code. Enter the status code of your choice in the field. - Bad Request (400): The request had bad syntax or was inherently impossible to be satisfied. - Internal Server Error (500): The server encountered an unexpected condition which prevented it from fulfilling the request. - OK (200): The request was fulfilled. - Resource Not Found (404): The server has not found anything matching the URI given. |
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Schema and Edit schema |
A schema is a row description, that is, it defines the number of fields to be processed and passed on to the next component. The schema mode is Built-in: it is created and stored locally for this component. Click Edit schema to make changes to the schema. The input flow is retrieved from the previous component connected to tRESTResponse. Any change of the input flow in tRESTResponse will also be propagated to the previous component automatically. The output flow of tRESTResponse is a hard-coded field named body, the type of which is defined in the Return Body Type list. |
Advanced settings
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Response Headers |
Type in the name-value pair(s) to pass additional information about the response. For more information about response headers, see the site http://www.w3.org/Protocols/rfc2616/rfc2616-sec6.html#sec6.2. |
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Drop JSON Response Root |
Select this check box to drop the root JSON element in the response. |
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JSON Array Keys |
Type in the keywords for the JSON result to be formatted as a JSON array. |
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tStatCatcher Statistics |
Select this check box to gather the Job processing metadata at a Job level as well as at each component level. |
Global Variables
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Global Variables |
NB_LINE: the number of rows processed. This is an After variable and it returns an integer. ERROR_MESSAGE: the error message generated by the component when an error occurs. This is an After variable and it returns a string. This variable functions only if the Die on error check box is cleared, if the component has this check box. A Flow variable functions during the execution of a component while an After variable functions after the execution of the component. To fill up a field or expression with a variable, press Ctrl + Space to access the variable list and choose the variable to use from it. For further information about variables, see Talend Studio User Guide. |
Usage
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Usage rule |
This component covers the possibility that a Talend Job can be wrapped as a service, with the ability to input a request to a service into a Job and return the Job result as a service response. The tRESTResponse component should only be used with the tRESTRequest component to provide a Job result as response for a web service provider, in case of a request-response communication style. |