Each customized operator must use the following service functions for interfacing with Teradata PT or with other Teradata PT operators. The table below shows descriptions for each of these service functions.
|Allocating and freeing Teradata PT storage for your operator.|
|Creating, accessing, and deleting global variables.|
|Storing and retrieving attribute values.|
|Storing and retrieving data rows.|
|Storing and retrieving column values.|
|Storing and retrieving checkpoint records.|
|Creating and accessing column schemas.|
|Creating table schemas.|
|Retrieving lists of table and column schemas.|
|Set Error Message||Creating error messages.|
|Initiating, writing, and terminating a log stream function.|
|Define Error Handler||Redirecting a call after an error occurs in the Logger API.|
Complete descriptions for each of the above functions follow in the next section.