Supporting classes

CursorHoldableJDBCReader
This class is referenced when the usage pattern of your JDBC input stream retrieves a set of results at the beginning of the step, and then iterates over them throughout the step-processing logic. The CursorHoldableJDBCReader uses a stateful session bean with a cursor-holdable, non-XA data source. A cursor-holdable JDBCReader is a pattern that is implemented in such a way that the cursor is not lost when the transaction is committed. As a result, ResultSets do not need to be repopulated after every checkpoint, which improves performance. To use CursorHoldableJDBCReader, package the CursorHoldableSessionBean in your application. To create the package, add the nonxadsjndiname=jndi_name_of_a_non-XA_data_source_to_database property to the properties file that is used by the BatchPackager. For example:
```
nonxadsjndiname=jdbc/nonxads
```
If you want to add multiple non-XA datasources enter the following:
```
name1>;<jndi name2>...
```
Restriction: Currently, the resource reference name of the JDBC data source is the same as the Java Naming and Directory Interface (JNDI) name.
JDBCReader
This class is referenced when the usage pattern of your JDBC input stream retrieves a single result from a query, which is used and discarded after every iteration of the step.
LocalJDBCReader
This class is referenced when data is read from a local database.