public class GenericServiceBean implements GenericService
{
    @PersistenceContext(unitName = "myDB")
    EntityManager em;

    private final Logger log = LoggerFactory.getLogger(GenericServiceBean.class);

    public GenericServiceBean()
    {
        // empty
    }

    public <T> T create(T t) throws IllegalArgumentException,
            PersistenceException, EntityExistsException
    {
        try
        {
            em.persist(t);
        }
        catch (IllegalArgumentException ex)
        {
            log.error("Caught IllegalArgumentException attempting to create "
                    + t, ex);
            throw ex;
        }
        catch (EntityExistsException ex)
        {
            log.warn("Entity already exists in the database - " + t);
            throw ex;
        }
        catch (PersistenceException ex)
        {
            log.error("Caught unexpected PersistenceException creating " + t,
                    ex);
            throw ex;
        }

        return t;
    }

public class BatchService extends GenericServiceBean
{
    private final Logger logger = LoggerFactory.getLogger(BatchService.class);

    public BatchService()
    {
        // empty
    }

    public Batch create(final Batch batch)
    {
        logger.info("Attempting to insert batch: " + batch.getBatchId());
        return super.create(batch);
    }
}

try
{
    this.batchService.create(dbBatch);
    log.info("Successfully inserted batch into database - batch ID: " + batchID);
}
catch(EntityExistsException ex)
{
    log.warn("Batch and/or MTA IDs already exist in the database - Batch ID: " + batchID);
    throw ex;
}
catch (PersistenceException ex)
{
    String message = "Error saving batch to database - Batch ID: " + batchID; 
    log.error(message);
    throw ex;
}
catch (Throwable t)
{
    String message = "Error saving batch to database - Batch ID: " + batchID; 
    log.error(message);
    throw new Exception (message, t);
}

[#|2012-03-26T13:23:23.197-0600|WARNING|glassfish3.1.1|org.eclipse.persistence.session.file:/opt/glassfishv3/glassfish/domains/domain1/applications/ESwimBatchReceiver-1.0-20120326.181321-19/WEB-INF/lib/eswim-data-model-1.0-20120326.181239-7.jar_eswim|_ThreadID=27;_ThreadName=Thread-2;|
Local Exception Stack:
Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Duplicate entry '12345462-2279-4516-af7d-cf9716f7748a' for key 1
Error Code: 1062
Call: INSERT INTO BATCH (BATCH_ID, MESSAGE, STATUS, UPLOAD_DATE) VALUES (?, ?, ?, ?)
        bind => [4 parameters bound]
Query: InsertObjectQuery(BatchID=12345462-2279-4516-af7d-cf9716f7748a;Status=new;Message=null)
        at org.eclipse.persistence.exceptions.DatabaseException.sqlException(DatabaseException.java:324)
        at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeDirectNoSelect(DatabaseAccessor.java:840)
        at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeNoSelect(DatabaseAccessor.java:906)
        at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.basicExecuteCall(DatabaseAccessor.java:592)
        at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeCall(DatabaseAccessor.java:535)
        at org.eclipse.persistence.internal.sessions.AbstractSession.basicExecuteCall(AbstractSession.java:1702)