Output parameter mapping

Try OpenEdge Now

Web Services

Creating OpenEdge REST Web Services : REST Applications : Parameter mapping : Output parameter mapping

Output parameters from a procedure or function are mapped to an HTTP response. Elements of an HTTP response include:

Status code

Response headers (including cookies and location)

Response body

Since the status code and response headers of an HTTP response are text, the mapping of an ABL output parameter to a response element is equivalent to mapping from the source ABL data type to text. See Supported output parameter mappings for more information.

A JSON response body in can be mapped to an output parameter in two ways:

You can map an output parameter that is a ProDataSet (DATASET and DATASET-HANDLE) or temp table (TABLE and TABLE-HANDLE) to a JSON response body. In this case, the request body is formatted as described in OpenEdge Development: Working with JSON. Also see JSON input and output message formats.

You can map a single CHARACTER or LONGCHAR parameter to a JSON response body. In this case the formatting must conform to the JSON media type.

Runtime errors occur if a mapping is not supported. see Errors and exceptions for more information.