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java.lang.Objectorg.springframework.orm.jpa.DefaultJpaDialect
org.springframework.orm.jpa.vendor.HibernateJpaDialect
public class HibernateJpaDialect
JpaDialect implementation for
Hibernate EntityManager. Developed against Hibernate 3.3;
tested against 3.3, 3.5 and 3.6 (with the latter including
Hibernate EntityManager in the Hibernate core distribution).
| Constructor Summary | |
|---|---|
HibernateJpaDialect()
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| Method Summary | |
|---|---|
Object |
beginTransaction(javax.persistence.EntityManager entityManager,
TransactionDefinition definition)
This implementation invokes the standard JPA Transaction.begin
method. |
void |
cleanupTransaction(Object transactionData)
This implementation does nothing, since the default beginTransaction
implementation does not require any cleanup. |
ConnectionHandle |
getJdbcConnection(javax.persistence.EntityManager entityManager,
boolean readOnly)
This implementation always returns null,
indicating that no JDBC Connection can be provided. |
protected org.hibernate.Session |
getSession(javax.persistence.EntityManager em)
|
Object |
prepareTransaction(javax.persistence.EntityManager entityManager,
boolean readOnly,
String name)
Prepare a JPA transaction, applying the specified semantics. |
DataAccessException |
translateExceptionIfPossible(RuntimeException ex)
This implementation delegates to EntityManagerFactoryUtils. |
| Methods inherited from class org.springframework.orm.jpa.DefaultJpaDialect |
|---|
getEntityManagerFactoryPlusOperations, getEntityManagerPlusOperations, releaseJdbcConnection, supportsEntityManagerFactoryPlusOperations, supportsEntityManagerPlusOperations |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
public HibernateJpaDialect()
| Method Detail |
|---|
public Object beginTransaction(javax.persistence.EntityManager entityManager,
TransactionDefinition definition)
throws javax.persistence.PersistenceException,
SQLException,
TransactionException
DefaultJpaDialectTransaction.begin
method. Throws an InvalidIsolationLevelException if a non-default isolation
level is set.
This implementation does not return any transaction data Object, since there
is no state to be kept for a standard JPA transaction. Hence, subclasses do not
have to care about the return value (null) of this implementation
and are free to return their own transaction data Object.
beginTransaction in interface JpaDialectbeginTransaction in class DefaultJpaDialectentityManager - the EntityManager to begin a JPA transaction ondefinition - the Spring transaction definition that defines semantics
JpaDialect.cleanupTransaction(java.lang.Object)). May implement the
SavepointManager interface.
javax.persistence.PersistenceException - if thrown by JPA methods
SQLException - if thrown by JDBC methods
TransactionException - in case of invalid argumentsEntityTransaction.begin(),
InvalidIsolationLevelException,
DefaultJpaDialect.cleanupTransaction(java.lang.Object)
public Object prepareTransaction(javax.persistence.EntityManager entityManager,
boolean readOnly,
String name)
throws javax.persistence.PersistenceException
JpaDialectAn implementation can apply the read-only flag as flush mode. In that case,
a transaction data object can be returned that holds the previous flush mode
(and possibly other data), to be reset in cleanupTransaction.
Implementations can also use the Spring transaction name, as exposed by the passed-in TransactionDefinition, to optimize for specific data access use cases (effectively using the current transaction name as use case identifier).
prepareTransaction in interface JpaDialectprepareTransaction in class DefaultJpaDialectentityManager - the EntityManager to begin a JPA transaction onreadOnly - whether the transaction is supposed to be read-onlyname - the name of the transaction (if any)
javax.persistence.PersistenceException - if thrown by JPA methodsJpaDialect.cleanupTransaction(java.lang.Object)public void cleanupTransaction(Object transactionData)
DefaultJpaDialectbeginTransaction
implementation does not require any cleanup.
cleanupTransaction in interface JpaDialectcleanupTransaction in class DefaultJpaDialecttransactionData - arbitrary object that holds transaction data, if any
(as returned by beginTransaction or prepareTransaction)DefaultJpaDialect.beginTransaction(javax.persistence.EntityManager, org.springframework.transaction.TransactionDefinition)
public ConnectionHandle getJdbcConnection(javax.persistence.EntityManager entityManager,
boolean readOnly)
throws javax.persistence.PersistenceException,
SQLException
DefaultJpaDialectnull,
indicating that no JDBC Connection can be provided.
getJdbcConnection in interface JpaDialectgetJdbcConnection in class DefaultJpaDialectentityManager - the current JPA EntityManagerreadOnly - whether the Connection is only needed for read-only purposes
releaseJdbcConnection, or null
if no JDBC Connection can be retrieved
javax.persistence.PersistenceException - if thrown by JPA methods
SQLException - if thrown by JDBC methodsJpaDialect.releaseJdbcConnection(org.springframework.jdbc.datasource.ConnectionHandle, javax.persistence.EntityManager),
ConnectionHandle.getConnection(),
SimpleConnectionHandle,
JpaTransactionManager.setDataSource(javax.sql.DataSource),
NativeJdbcExtractorpublic DataAccessException translateExceptionIfPossible(RuntimeException ex)
DefaultJpaDialect
translateExceptionIfPossible in interface PersistenceExceptionTranslatortranslateExceptionIfPossible in class DefaultJpaDialectex - a RuntimeException thrown
null if the
exception could not be translated, as in this case it may result from
user code rather than an actual persistence problem)EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible(java.lang.RuntimeException)protected org.hibernate.Session getSession(javax.persistence.EntityManager em)
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