org.springframework.transaction.support

Class DelegatingTransactionDefinition

java.lang.Object

org.springframework.transaction.support.DelegatingTransactionDefinition

All Implemented Interfaces:

Serializable, TransactionDefinition

Direct Known Subclasses:

DelegatingTransactionAttribute

public abstract class DelegatingTransactionDefinition
extends Object
implements TransactionDefinition, Serializable

TransactionDefinition implementation that delegates all calls to a given target TransactionDefinition instance. Abstract because it is meant to be subclassed, with subclasses overriding specific methods that are not supposed to simply delegate to the target instance.

Since:

3.0

Author:

Juergen Hoeller

See Also:

Serialized Form

Field Summary

Fields inherited from interface org.springframework.transaction.TransactionDefinition

ISOLATION_DEFAULT, ISOLATION_READ_COMMITTED, ISOLATION_READ_UNCOMMITTED, ISOLATION_REPEATABLE_READ, ISOLATION_SERIALIZABLE, PROPAGATION_MANDATORY, PROPAGATION_NESTED, PROPAGATION_NEVER, PROPAGATION_NOT_SUPPORTED, PROPAGATION_REQUIRED, PROPAGATION_REQUIRES_NEW, PROPAGATION_SUPPORTS, TIMEOUT_DEFAULT

Constructor Summary

Constructors

Constructor and Description
DelegatingTransactionDefinition(TransactionDefinition targetDefinition) Create a DelegatingTransactionAttribute for the given target attribute.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object other)
int	getIsolationLevel() Return the isolation level.
String	getName() Return the name of this transaction.
int	getPropagationBehavior() Return the propagation behavior.
int	getTimeout() Return the transaction timeout.
int	hashCode()
boolean	isReadOnly() Return whether to optimize as a read-only transaction.
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

DelegatingTransactionDefinition

public DelegatingTransactionDefinition(TransactionDefinition targetDefinition)

Create a DelegatingTransactionAttribute for the given target attribute.

Parameters:

targetDefinition - the target TransactionAttribute to delegate to

Method Detail

getPropagationBehavior

public int getPropagationBehavior()

Description copied from interface: TransactionDefinition

Return the propagation behavior.

Must return one of the PROPAGATION_XXX constants defined on this interface.

Specified by:

getPropagationBehavior in interface TransactionDefinition

Returns:

the propagation behavior

See Also:

TransactionDefinition.PROPAGATION_REQUIRED, TransactionSynchronizationManager.isActualTransactionActive()

getIsolationLevel

public int getIsolationLevel()

Description copied from interface: TransactionDefinition

Return the isolation level.

Must return one of the ISOLATION_XXX constants defined on this interface. Those constants are designed to match the values of the same constants on Connection.

Exclusively designed for use with TransactionDefinition.PROPAGATION_REQUIRED or TransactionDefinition.PROPAGATION_REQUIRES_NEW since it only applies to newly started transactions. Consider switching the "validateExistingTransactions" flag to "true" on your transaction manager if you'd like isolation level declarations to get rejected when participating in an existing transaction with a different isolation level.

Note that a transaction manager that does not support custom isolation levels will throw an exception when given any other level than TransactionDefinition.ISOLATION_DEFAULT.

Specified by:

getIsolationLevel in interface TransactionDefinition

Returns:

the isolation level

See Also:

TransactionDefinition.ISOLATION_DEFAULT, AbstractPlatformTransactionManager.setValidateExistingTransaction(boolean)

getTimeout

public int getTimeout()

Description copied from interface: TransactionDefinition

Return the transaction timeout.

Must return a number of seconds, or TransactionDefinition.TIMEOUT_DEFAULT.

Exclusively designed for use with TransactionDefinition.PROPAGATION_REQUIRED or TransactionDefinition.PROPAGATION_REQUIRES_NEW since it only applies to newly started transactions.

Note that a transaction manager that does not support timeouts will throw an exception when given any other timeout than TransactionDefinition.TIMEOUT_DEFAULT.

Specified by:

getTimeout in interface TransactionDefinition

Returns:

the transaction timeout

isReadOnly

public boolean isReadOnly()

Description copied from interface: TransactionDefinition

Return whether to optimize as a read-only transaction.

The read-only flag applies to any transaction context, whether backed by an actual resource transaction (TransactionDefinition.PROPAGATION_REQUIRED/ TransactionDefinition.PROPAGATION_REQUIRES_NEW) or operating non-transactionally at the resource level (TransactionDefinition.PROPAGATION_SUPPORTS). In the latter case, the flag will only apply to managed resources within the application, such as a Hibernate Session.

This just serves as a hint for the actual transaction subsystem; it will not necessarily cause failure of write access attempts. A transaction manager which cannot interpret the read-only hint will not throw an exception when asked for a read-only transaction.

Specified by:

isReadOnly in interface TransactionDefinition

Returns:

true if the transaction is to be optimized as read-only

See Also:

TransactionSynchronization.beforeCommit(boolean), TransactionSynchronizationManager.isCurrentTransactionReadOnly()

getName

@Nullable
public String getName()

Description copied from interface: TransactionDefinition

Return the name of this transaction. Can be null.

This will be used as the transaction name to be shown in a transaction monitor, if applicable (for example, WebLogic's).

In case of Spring's declarative transactions, the exposed name will be the fully-qualified class name + "." + method name (by default).

Specified by:

getName in interface TransactionDefinition

Returns:

the name of this transaction

See Also:

TransactionAspectSupport, TransactionSynchronizationManager.getCurrentTransactionName()

equals

public boolean equals(Object other)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object