Java Code Examples for org.springframework.transaction.TransactionDefinition#getIsolationLevel()

@Override
@Nullable
public Object beginTransaction(EntityManager entityManager, TransactionDefinition definition)
		throws PersistenceException, SQLException, TransactionException {

	if (definition.getIsolationLevel() != TransactionDefinition.ISOLATION_DEFAULT) {
		// Pass custom isolation level on to EclipseLink's DatabaseLogin configuration
		// (since Spring 4.1.2)
		UnitOfWork uow = entityManager.unwrap(UnitOfWork.class);
		uow.getLogin().setTransactionIsolation(definition.getIsolationLevel());
	}

	entityManager.getTransaction().begin();

	if (!definition.isReadOnly() && !this.lazyDatabaseTransaction) {
		// Begin an early transaction to force EclipseLink to get a JDBC Connection
		// so that Spring can manage transactions with JDBC as well as EclipseLink.
		entityManager.unwrap(UnitOfWork.class).beginEarlyTransaction();
	}

	return null;
}
 

/**
 * Maps a Spring {@link TransactionDefinition transaction definition} to a native Neo4j driver transaction.
 * Only the default isolation leven ({@link TransactionDefinition#ISOLATION_DEFAULT}) and
 * {@link TransactionDefinition#PROPAGATION_REQUIRED propagation required} behaviour are supported.
 *
 * @param definition The transaction definition passed to a Neo4j transaction manager
 * @return A Neo4j native transaction configuration
 */
static TransactionConfig createTransactionConfigFrom(TransactionDefinition definition) {

	if (definition.getIsolationLevel() != TransactionDefinition.ISOLATION_DEFAULT) {
		throw new InvalidIsolationLevelException(
			"Neo4jTransactionManager is not allowed to support custom isolation levels.");
	}

	int propagationBehavior = definition.getPropagationBehavior();
	if (!(propagationBehavior == TransactionDefinition.PROPAGATION_REQUIRED || propagationBehavior == TransactionDefinition.PROPAGATION_REQUIRES_NEW)) {
		throw new IllegalTransactionStateException("Neo4jTransactionManager only supports 'required' or 'requires new' propagation.");
	}

	TransactionConfig.Builder builder = TransactionConfig.builder();
	if (definition.getTimeout() > 0) {
		builder = builder.withTimeout(Duration.ofSeconds(definition.getTimeout()));
	}

	return builder.build();
}
 

@Override
public Object beginTransaction(EntityManager entityManager, TransactionDefinition definition)
		throws PersistenceException, SQLException, TransactionException {

	OpenJPAEntityManager openJpaEntityManager = getOpenJPAEntityManager(entityManager);

	if (definition.getIsolationLevel() != TransactionDefinition.ISOLATION_DEFAULT) {
		// Pass custom isolation level on to OpenJPA's JDBCFetchPlan configuration
		FetchPlan fetchPlan = openJpaEntityManager.getFetchPlan();
		if (fetchPlan instanceof JDBCFetchPlan) {
			IsolationLevel isolation = IsolationLevel.fromConnectionConstant(definition.getIsolationLevel());
			((JDBCFetchPlan) fetchPlan).setIsolation(isolation);
		}
	}

	entityManager.getTransaction().begin();

	if (!definition.isReadOnly()) {
		// Like with EclipseLink, make sure to start the logic transaction early so that other
		// participants using the connection (such as JdbcTemplate) run in a transaction.
		openJpaEntityManager.beginStore();
	}

	// Custom implementation for OpenJPA savepoint handling
	return new OpenJpaTransactionData(openJpaEntityManager);
}
 

@Override
@Nullable
public Object beginTransaction(EntityManager entityManager, TransactionDefinition definition)
		throws PersistenceException, SQLException, TransactionException {

	if (definition.getIsolationLevel() != TransactionDefinition.ISOLATION_DEFAULT) {
		// Pass custom isolation level on to EclipseLink's DatabaseLogin configuration
		// (since Spring 4.1.2)
		UnitOfWork uow = entityManager.unwrap(UnitOfWork.class);
		uow.getLogin().setTransactionIsolation(definition.getIsolationLevel());
	}

	entityManager.getTransaction().begin();

	if (!definition.isReadOnly() && !this.lazyDatabaseTransaction) {
		// Begin an early transaction to force EclipseLink to get a JDBC Connection
		// so that Spring can manage transactions with JDBC as well as EclipseLink.
		entityManager.unwrap(UnitOfWork.class).beginEarlyTransaction();
	}

	return null;
}
 

@Override
public Object beginTransaction(EntityManager entityManager, TransactionDefinition definition)
		throws PersistenceException, SQLException, TransactionException {

	if (definition.getIsolationLevel() != TransactionDefinition.ISOLATION_DEFAULT) {
		// Pass custom isolation level on to EclipseLink's DatabaseLogin configuration
		// (since Spring 4.1.2)
		UnitOfWork uow = entityManager.unwrap(UnitOfWork.class);
		uow.getLogin().setTransactionIsolation(definition.getIsolationLevel());
	}

	entityManager.getTransaction().begin();

	if (!definition.isReadOnly() && !this.lazyDatabaseTransaction) {
		// Begin an early transaction to force EclipseLink to get a JDBC Connection
		// so that Spring can manage transactions with JDBC as well as EclipseLink.
		entityManager.unwrap(UnitOfWork.class).beginEarlyTransaction();
	}

	return null;
}
 

@Override
public Object beginTransaction(EntityManager entityManager, TransactionDefinition definition)
		throws PersistenceException, SQLException, TransactionException {

	OpenJPAEntityManager openJpaEntityManager = getOpenJPAEntityManager(entityManager);

	if (definition.getIsolationLevel() != TransactionDefinition.ISOLATION_DEFAULT) {
		// Pass custom isolation level on to OpenJPA's JDBCFetchPlan configuration
		FetchPlan fetchPlan = openJpaEntityManager.getFetchPlan();
		if (fetchPlan instanceof JDBCFetchPlan) {
			IsolationLevel isolation = IsolationLevel.fromConnectionConstant(definition.getIsolationLevel());
			((JDBCFetchPlan) fetchPlan).setIsolation(isolation);
		}
	}

	entityManager.getTransaction().begin();

	if (!definition.isReadOnly()) {
		// Like with EclipseLink, make sure to start the logic transaction early so that other
		// participants using the connection (such as JdbcTemplate) run in a transaction.
		openJpaEntityManager.beginStore();
	}

	// Custom implementation for OpenJPA savepoint handling
	return new OpenJpaTransactionData(openJpaEntityManager);
}
 

/**
 * This implementation invokes the standard JPA {@code Transaction.begin}
 * method. Throws an InvalidIsolationLevelException if a non-default isolation
 * level is set.
 * <p>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 ({@code null}) of this implementation
 * and are free to return their own transaction data Object.
 * @see javax.persistence.EntityTransaction#begin
 * @see org.springframework.transaction.InvalidIsolationLevelException
 * @see #cleanupTransaction
 */
@Override
@Nullable
public Object beginTransaction(EntityManager entityManager, TransactionDefinition definition)
		throws PersistenceException, SQLException, TransactionException {

	if (definition.getIsolationLevel() != TransactionDefinition.ISOLATION_DEFAULT) {
		throw new InvalidIsolationLevelException(getClass().getSimpleName() +
				" does not support custom isolation levels due to limitations in standard JPA. " +
				"Specific arrangements may be implemented in custom JpaDialect variants.");
	}
	entityManager.getTransaction().begin();
	return null;
}
 

/**
 * This implementation invokes the standard JPA {@code Transaction.begin}
 * method. Throws an InvalidIsolationLevelException if a non-default isolation
 * level is set.
 * <p>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 ({@code null}) of this implementation
 * and are free to return their own transaction data Object.
 * @see javax.persistence.EntityTransaction#begin
 * @see org.springframework.transaction.InvalidIsolationLevelException
 * @see #cleanupTransaction
 */
@Override
public Object beginTransaction(EntityManager entityManager, TransactionDefinition definition)
		throws PersistenceException, SQLException, TransactionException {

	if (definition.getIsolationLevel() != TransactionDefinition.ISOLATION_DEFAULT) {
		throw new InvalidIsolationLevelException(getClass().getSimpleName() +
				" does not support custom isolation levels due to limitations in standard JPA. " +
				"Specific arrangements may be implemented in custom JpaDialect variants.");
	}
	entityManager.getTransaction().begin();
	return null;
}
 

/** {@inheritDoc} */
@Override protected void doBegin(Object transaction, TransactionDefinition definition) throws TransactionException {
    if (definition.getIsolationLevel() == TransactionDefinition.ISOLATION_READ_UNCOMMITTED)
        throw new InvalidIsolationLevelException("Ignite does not support READ_UNCOMMITTED isolation level.");

    IgniteTransactionObject txObj = (IgniteTransactionObject)transaction;
    Transaction tx = null;

    try {
        if (txObj.getTransactionHolder() == null || txObj.getTransactionHolder().isSynchronizedWithTransaction()) {
            long timeout = ignite.configuration().getTransactionConfiguration().getDefaultTxTimeout();

            if (definition.getTimeout() > 0)
                timeout = TimeUnit.SECONDS.toMillis(definition.getTimeout());

            Transaction newTx = ignite.transactions().txStart(transactionConcurrency,
                convertToIgniteIsolationLevel(definition.getIsolationLevel()), timeout, 0);

            if (log.isDebugEnabled())
                log.debug("Started Ignite transaction: " + newTx);

            txObj.setTransactionHolder(new IgniteTransactionHolder(newTx), true);
        }

        txObj.getTransactionHolder().setSynchronizedWithTransaction(true);
        txObj.getTransactionHolder().setTransactionActive(true);

        tx = txObj.getTransactionHolder().getTransaction();

        // Bind the session holder to the thread.
        if (txObj.isNewTransactionHolder())
            TransactionSynchronizationManager.bindResource(this.ignite, txObj.getTransactionHolder());
    }
    catch (Exception ex) {
        if (tx != null)
            tx.close();

        throw new CannotCreateTransactionException("Could not create Ignite transaction", ex);
    }
}
 

/**
 * Determine the JDO isolation level String to use for the given
 * Spring transaction definition.
 * @param definition the Spring transaction definition
 * @return the corresponding JDO isolation level String, or {@code null}
 * to indicate that no isolation level should be set explicitly
 * @see Transaction#setIsolationLevel(String)
 * @see Constants#TX_SERIALIZABLE
 * @see Constants#TX_REPEATABLE_READ
 * @see Constants#TX_READ_COMMITTED
 * @see Constants#TX_READ_UNCOMMITTED
 */
protected String getJdoIsolationLevel(TransactionDefinition definition) {
	switch (definition.getIsolationLevel()) {
		case TransactionDefinition.ISOLATION_SERIALIZABLE:
			return Constants.TX_SERIALIZABLE;
		case TransactionDefinition.ISOLATION_REPEATABLE_READ:
			return Constants.TX_REPEATABLE_READ;
		case TransactionDefinition.ISOLATION_READ_COMMITTED:
			return Constants.TX_READ_COMMITTED;
		case TransactionDefinition.ISOLATION_READ_UNCOMMITTED:
			return Constants.TX_READ_UNCOMMITTED;
		default:
			return null;
	}
}
 

/**
 * Determine the JDO isolation level String to use for the given
 * Spring transaction definition.
 * @param definition the Spring transaction definition
 * @return the corresponding JDO isolation level String, or {@code null}
 * to indicate that no isolation level should be set explicitly
 * @see Transaction#setIsolationLevel(String)
 * @see Constants#TX_SERIALIZABLE
 * @see Constants#TX_REPEATABLE_READ
 * @see Constants#TX_READ_COMMITTED
 * @see Constants#TX_READ_UNCOMMITTED
 */
protected String getJdoIsolationLevel(TransactionDefinition definition) {
	switch (definition.getIsolationLevel()) {
		case TransactionDefinition.ISOLATION_SERIALIZABLE:
			return Constants.TX_SERIALIZABLE;
		case TransactionDefinition.ISOLATION_REPEATABLE_READ:
			return Constants.TX_REPEATABLE_READ;
		case TransactionDefinition.ISOLATION_READ_COMMITTED:
			return Constants.TX_READ_COMMITTED;
		case TransactionDefinition.ISOLATION_READ_UNCOMMITTED:
			return Constants.TX_READ_UNCOMMITTED;
		default:
			return null;
	}
}
 

/**
 * This implementation invokes the standard JPA {@code Transaction.begin}
 * method. Throws an InvalidIsolationLevelException if a non-default isolation
 * level is set.
 * <p>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 ({@code null}) of this implementation
 * and are free to return their own transaction data Object.
 * @see javax.persistence.EntityTransaction#begin
 * @see org.springframework.transaction.InvalidIsolationLevelException
 * @see #cleanupTransaction
 */
@Override
public Object beginTransaction(EntityManager entityManager, TransactionDefinition definition)
		throws PersistenceException, SQLException, TransactionException {

	if (definition.getIsolationLevel() != TransactionDefinition.ISOLATION_DEFAULT) {
		throw new InvalidIsolationLevelException(getClass().getSimpleName() +
				" does not support custom isolation levels due to limitations in standard JPA. " +
				"Specific arrangements may be implemented in custom JpaDialect variants.");
	}
	entityManager.getTransaction().begin();
	return null;
}
 

/**
 * This implementation invokes the standard JPA {@code Transaction.begin}
 * method. Throws an InvalidIsolationLevelException if a non-default isolation
 * level is set.
 * <p>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 ({@code null}) of this implementation
 * and are free to return their own transaction data Object.
 * @see javax.persistence.EntityTransaction#begin
 * @see org.springframework.transaction.InvalidIsolationLevelException
 * @see #cleanupTransaction
 */
@Override
@Nullable
public Object beginTransaction(EntityManager entityManager, TransactionDefinition definition)
		throws PersistenceException, SQLException, TransactionException {

	if (definition.getIsolationLevel() != TransactionDefinition.ISOLATION_DEFAULT) {
		throw new InvalidIsolationLevelException(getClass().getSimpleName() +
				" does not support custom isolation levels due to limitations in standard JPA. " +
				"Specific arrangements may be implemented in custom JpaDialect variants.");
	}
	entityManager.getTransaction().begin();
	return null;
}
 

/**
 * Prepare the given Connection with the given transaction semantics.
 * @param con the Connection to prepare
 * @param definition the transaction definition to apply
 * @return the previous isolation level, if any
 * @throws SQLException if thrown by JDBC methods
 * @see #resetConnectionAfterTransaction
 */
@Nullable
public static Integer prepareConnectionForTransaction(Connection con, @Nullable TransactionDefinition definition)
		throws SQLException {

	Assert.notNull(con, "No Connection specified");

	// Set read-only flag.
	if (definition != null && definition.isReadOnly()) {
		try {
			if (logger.isDebugEnabled()) {
				logger.debug("Setting JDBC Connection [" + con + "] read-only");
			}
			con.setReadOnly(true);
		}
		catch (SQLException | RuntimeException ex) {
			Throwable exToCheck = ex;
			while (exToCheck != null) {
				if (exToCheck.getClass().getSimpleName().contains("Timeout")) {
					// Assume it's a connection timeout that would otherwise get lost: e.g. from JDBC 4.0
					throw ex;
				}
				exToCheck = exToCheck.getCause();
			}
			// "read-only not supported" SQLException -> ignore, it's just a hint anyway
			logger.debug("Could not set JDBC Connection read-only", ex);
		}
	}

	// Apply specific isolation level, if any.
	Integer previousIsolationLevel = null;
	if (definition != null && definition.getIsolationLevel() != TransactionDefinition.ISOLATION_DEFAULT) {
		if (logger.isDebugEnabled()) {
			logger.debug("Changing isolation level of JDBC Connection [" + con + "] to " +
					definition.getIsolationLevel());
		}
		int currentIsolation = con.getTransactionIsolation();
		if (currentIsolation != definition.getIsolationLevel()) {
			previousIsolationLevel = currentIsolation;
			con.setTransactionIsolation(definition.getIsolationLevel());
		}
	}

	return previousIsolationLevel;
}
 

@Override
public Object beginTransaction(EntityManager entityManager, TransactionDefinition definition)
		throws PersistenceException, SQLException, TransactionException {

	Session session = getSession(entityManager);

	if (definition.getTimeout() != TransactionDefinition.TIMEOUT_DEFAULT) {
		session.getTransaction().setTimeout(definition.getTimeout());
	}

	boolean isolationLevelNeeded = (definition.getIsolationLevel() != TransactionDefinition.ISOLATION_DEFAULT);
	Integer previousIsolationLevel = null;
	Connection preparedCon = null;

	if (isolationLevelNeeded || definition.isReadOnly()) {
		if (this.prepareConnection) {
			preparedCon = HibernateConnectionHandle.doGetConnection(session);
			previousIsolationLevel = DataSourceUtils.prepareConnectionForTransaction(preparedCon, definition);
		}
		else if (isolationLevelNeeded) {
			throw new InvalidIsolationLevelException(getClass().getSimpleName() +
					" does not support custom isolation levels since the 'prepareConnection' flag is off.");
		}
	}

	// Standard JPA transaction begin call for full JPA context setup...
	entityManager.getTransaction().begin();

	// Adapt flush mode and store previous isolation level, if any.
	FlushMode previousFlushMode = prepareFlushMode(session, definition.isReadOnly());
	if (definition instanceof ResourceTransactionDefinition &&
			((ResourceTransactionDefinition) definition).isLocalResource()) {
		// As of 5.1, we explicitly optimize for a transaction-local EntityManager,
		// aligned with native HibernateTransactionManager behavior.
		previousFlushMode = null;
		if (definition.isReadOnly()) {
			session.setDefaultReadOnly(true);
		}
	}
	return new SessionTransactionData(session, previousFlushMode, preparedCon, previousIsolationLevel);
}
 

/**
 * Prepare the given Connection with the given transaction semantics.
 * @param con the Connection to prepare
 * @param definition the transaction definition to apply
 * @return the previous isolation level, if any
 * @throws SQLException if thrown by JDBC methods
 * @see #resetConnectionAfterTransaction
 */
@Nullable
public static Integer prepareConnectionForTransaction(Connection con, @Nullable TransactionDefinition definition)
		throws SQLException {

	Assert.notNull(con, "No Connection specified");

	// Set read-only flag.
	if (definition != null && definition.isReadOnly()) {
		try {
			if (logger.isDebugEnabled()) {
				logger.debug("Setting JDBC Connection [" + con + "] read-only");
			}
			con.setReadOnly(true);
		}
		catch (SQLException | RuntimeException ex) {
			Throwable exToCheck = ex;
			while (exToCheck != null) {
				if (exToCheck.getClass().getSimpleName().contains("Timeout")) {
					// Assume it's a connection timeout that would otherwise get lost: e.g. from JDBC 4.0
					throw ex;
				}
				exToCheck = exToCheck.getCause();
			}
			// "read-only not supported" SQLException -> ignore, it's just a hint anyway
			logger.debug("Could not set JDBC Connection read-only", ex);
		}
	}

	// Apply specific isolation level, if any.
	Integer previousIsolationLevel = null;
	if (definition != null && definition.getIsolationLevel() != TransactionDefinition.ISOLATION_DEFAULT) {
		if (logger.isDebugEnabled()) {
			logger.debug("Changing isolation level of JDBC Connection [" + con + "] to " +
					definition.getIsolationLevel());
		}
		int currentIsolation = con.getTransactionIsolation();
		if (currentIsolation != definition.getIsolationLevel()) {
			previousIsolationLevel = currentIsolation;
			con.setTransactionIsolation(definition.getIsolationLevel());
		}
	}

	return previousIsolationLevel;
}
 

@Override
public Object beginTransaction(EntityManager entityManager, TransactionDefinition definition)
		throws PersistenceException, SQLException, TransactionException {

	Session session = getSession(entityManager);

	if (definition.getTimeout() != TransactionDefinition.TIMEOUT_DEFAULT) {
		session.getTransaction().setTimeout(definition.getTimeout());
	}

	boolean isolationLevelNeeded = (definition.getIsolationLevel() != TransactionDefinition.ISOLATION_DEFAULT);
	Integer previousIsolationLevel = null;
	Connection preparedCon = null;

	if (isolationLevelNeeded || definition.isReadOnly()) {
		if (this.prepareConnection) {
			preparedCon = HibernateConnectionHandle.doGetConnection(session);
			previousIsolationLevel = DataSourceUtils.prepareConnectionForTransaction(preparedCon, definition);
		}
		else if (isolationLevelNeeded) {
			throw new InvalidIsolationLevelException(getClass().getSimpleName() +
					" does not support custom isolation levels since the 'prepareConnection' flag is off.");
		}
	}

	// Standard JPA transaction begin call for full JPA context setup...
	entityManager.getTransaction().begin();

	// Adapt flush mode and store previous isolation level, if any.
	FlushMode previousFlushMode = prepareFlushMode(session, definition.isReadOnly());
	if (definition instanceof ResourceTransactionDefinition &&
			((ResourceTransactionDefinition) definition).isLocalResource()) {
		// As of 5.1, we explicitly optimize for a transaction-local EntityManager,
		// aligned with native HibernateTransactionManager behavior.
		previousFlushMode = null;
		if (definition.isReadOnly()) {
			session.setDefaultReadOnly(true);
		}
	}
	return new SessionTransactionData(session, previousFlushMode, preparedCon, previousIsolationLevel);
}
 

/**
 * Copy constructor. Definition can be modified through bean property setters.
 * @see #setPropagationBehavior
 * @see #setIsolationLevel
 * @see #setTimeout
 * @see #setReadOnly
 * @see #setName
 */
public DefaultTransactionDefinition(TransactionDefinition other) {
	this.propagationBehavior = other.getPropagationBehavior();
	this.isolationLevel = other.getIsolationLevel();
	this.timeout = other.getTimeout();
	this.readOnly = other.isReadOnly();
	this.name = other.getName();
}
 

/**
 * Copy constructor. Definition can be modified through bean property setters.
 * @see #setPropagationBehavior
 * @see #setIsolationLevel
 * @see #setTimeout
 * @see #setReadOnly
 * @see #setName
 */
public DefaultTransactionDefinition(TransactionDefinition other) {
	this.propagationBehavior = other.getPropagationBehavior();
	this.isolationLevel = other.getIsolationLevel();
	this.timeout = other.getTimeout();
	this.readOnly = other.isReadOnly();
	this.name = other.getName();
}
 

/**
 * Copy constructor. Definition can be modified through bean property setters.
 * @see #setPropagationBehavior
 * @see #setIsolationLevel
 * @see #setTimeout
 * @see #setReadOnly
 * @see #setName
 */
public DefaultTransactionDefinition(TransactionDefinition other) {
	this.propagationBehavior = other.getPropagationBehavior();
	this.isolationLevel = other.getIsolationLevel();
	this.timeout = other.getTimeout();
	this.readOnly = other.isReadOnly();
	this.name = other.getName();
}