Receiving responses

This section provides instructions for receiving responses from the ValueEdge server.

Overview

Output is returned from the server in these ways:

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Response header

All supported output header fields follow the HTTP/1.1 protocol. For a list describing HTTP/1.1 header definitions, see Header Field Definitions. Below you can find a list of ValueEdge-supported response header fields:

Header Name

  • Functionality
  • Content-Encoding

    • Specifies which coding was applied on the response body.

    • Return coding must be a sub-list of the coding specified in the Accept-Encoding request header.

    Mandatory.

    Example:

    Content-Encoding: gzip

    Content-Type

    • Specifies the media type that is being used for the response body.

    • Return media types must be a sub-list of the media types specified in the Accept request header.

    Mandatory.

    Example:

    Content-Type: application/json;q=0.9

    Date

    • Specifies the date and time at which the message was originated.

    • Date and time format follow the guidelines provided in RFC 1123.

    Exception: Date response header might be omitted by the server when the following status code return: 100, 101, 500, 503

    Mandatory.

    Example:

    Date: Mon, 24 Mar 2014 12:11:05 GMT

    Server

    • Specifies the software used by the server to handle the request.

    • Forward proxies must not change this response header and must use the Via response header instead.

    Example:

    Server: Jetty

    Via

    • Specifies the proxy or gateway software that forwarded the request to the server.

    Optional.

    Example:

    Via: server.com (Apache/2.1)

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    Response body

    By default, only the JSON representation is supported for all resource instances and resource collections.

    JSON representations follow the ECMA-404 standard called "The JSON Data Interchange Format.”

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    Response bodies for GET operations

    Responses for GET operations generally include: 

    • The relevant ID and type fields, and other default fields. To see additional fields, see Select fields (fields).

    • A total_count of items returned by the GET operation.

      You can set the maximum number of items that can be returned using the MAX_PAGE_SIZE configuration parameter. For details, see Setting configuration parameters with the REST API.

    • An exceeds_total_count value indicates if the maximum number of items that can be returned by the GET operation has been reached. If the value is true, the GET response is partial.

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    Response bodies for PUT, POST, and DELETE operations

    Responses for GET operations generally include: 

    • The relevant ID and type fields. To see additional fields, see Select fields (fields).

    • A total_count of items returned by the GET operation.

    • A business_error value might be included if an error is returned, and the error is of a business nature, such as a duplicate name, or an entity failing rule validation.

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    See also: