Consume Table Parameters

A table parameter is a non-constant parameter. This means that the TPF must be in the execution state to retrieve table parameters.

To consume a table parameter, the TPF must:

• Obtain a Table Object
  The TPF obtains a table object for the table parameter using the get_value method of a_v4_extfn_proc_context.
• Open the Result Set
  Once a table object has been obtained using get_value, the TPF must open a result set on the table object using the open_result_set method of a_v4_extfn_proc_context before it can fetch any rows.
• Fetch from the Result Set
  The TPF fetches table data from an input table using an open result set.
• Consume Table Data Using a Row Block
  The TPF consumes table data using the fetch_into or fetch_block row block structures.
• Close the Result Set
  Once the TPF is finished processing table data, it closes the open result set using the close_result_set method of a_v4_extfn_proc_context.