org.dellroad.stuff.spring

Class HibernateIsolationJpaDialect

java.lang.Object

org.springframework.orm.jpa.DefaultJpaDialect

org.springframework.orm.jpa.vendor.HibernateJpaDialect

org.dellroad.stuff.spring.HibernateIsolationJpaDialect

All Implemented Interfaces:

Serializable, PersistenceExceptionTranslator, JpaDialect

public class HibernateIsolationJpaDialect
extends HibernateJpaDialect

Hibernate JPA adapter that adds supports for setting a non-default transaction isolation level and adds a workaround for SPR-3812.

The JPA specification, which is database technology agnostic, does not define a way to set SQL database isolation levels. This fixes the "Standard JPA does not support custom isolation levels - use a special JpaDialect" Spring exception that will otherwise occur.

See Also:

SPR-3812, Question on stackoverflow.com, SPR-10815, Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	HibernateIsolationJpaDialect.TransactionDataWrapper Wraps superclass transaction data and adds isolation level to restore.

Constructor Summary

Constructors

Constructor and Description
HibernateIsolationJpaDialect()

Method Summary

Modifier and Type	Method and Description
HibernateIsolationJpaDialect.TransactionDataWrapper	beginTransaction(EntityManager entityManager, TransactionDefinition definition)
void	cleanupTransaction(Object obj)
protected HibernateIsolationJpaDialect.TransactionDataWrapper	prepareTransaction(EntityManager entityManager, TransactionDefinition definition, Connection connection, Integer oldIsolation) Prepare transaction.
DataAccessException	translateExceptionIfPossible(RuntimeException ex) Adds fix for SPR-10815.

Methods inherited from class org.springframework.orm.jpa.vendor.HibernateJpaDialect

convertHibernateAccessException, getJdbcConnection, getSession, prepareFlushMode, prepareTransaction, setJdbcExceptionTranslator, setPrepareConnection

Methods inherited from class org.springframework.orm.jpa.DefaultJpaDialect

releaseJdbcConnection

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

HibernateIsolationJpaDialect

public HibernateIsolationJpaDialect()

Method Detail

beginTransaction

public HibernateIsolationJpaDialect.TransactionDataWrapper beginTransaction(EntityManager entityManager,
                                                                            TransactionDefinition definition)
                                                                     throws SQLException

Specified by:

beginTransaction in interface JpaDialect

Overrides:

beginTransaction in class HibernateJpaDialect

Throws:

SQLException

prepareTransaction

protected HibernateIsolationJpaDialect.TransactionDataWrapper prepareTransaction(EntityManager entityManager,
                                                                                 TransactionDefinition definition,
                                                                                 Connection connection,
                                                                                 Integer oldIsolation)

Prepare transaction.

Parameters:

entityManager - entity manager

definition - transaction definition

connection - SQL connection

oldIsolation - original isolation

Returns:

wrapped transaction data

cleanupTransaction

public void cleanupTransaction(Object obj)

Specified by:

cleanupTransaction in interface JpaDialect

Overrides:

cleanupTransaction in class HibernateJpaDialect

translateExceptionIfPossible

public DataAccessException translateExceptionIfPossible(RuntimeException ex)

Adds fix for SPR-10815.

Specified by:

translateExceptionIfPossible in interface PersistenceExceptionTranslator

Overrides:

translateExceptionIfPossible in class HibernateJpaDialect

See Also:

SPR-10815