I am using a FeatureReader to read a Postgres db table. As I want the workspace to be easily migrated from developement to production system, I use Published Parameters to supply the connection parameters, meaning I use a parameter committing the name of a FME-DB-Connection and two parameters (Published_Parameter_Schema.Published_Parameter_Table) for the Feature Types to Read. Unfortunately, no output is generated from the generic port (no error message in the transition log), even if I expose the attribute within the FeatureReader or with an AttributeExposer afterwards.
As a workaround, I use a AttributeCreator to commit the Published Parameters for the schema and the table into attributes before using them as input for the FeatureReader. With exposing the attributes from the Postgres-DB inside the Transformer, this works fine.
But I keep wondering, why it doesn't work using Published Parameters directly?
