A WebSphere Transformation Extender map can read and write to the Standards Processing Engine (SPE) database through commands that invoke the SPE data harness. Data harness functions are appropriate only in maps that are running under SPE.
By using the SPE adapter, maps can read SPE data on input cards and from GET rules, and write to SPE data from output cards and PUT rules. To execute the harness function as soon as the PUT rule is processed, use the -NOW argument. The -NOW argument executes the function even if the map fails.
When the PUT rule does not include the -NOW argument, the function executes when the map completes.
When the map runs successfully, the output from the adapter is associated with an SPE document for use by normal stream adapters.