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## org.springframework.transaction.interceptor
Class DelegatingTransactionAttribute

    java.lang.Object
      org.springframework.transaction.interceptor.DelegatingTransactionAttribute

All Implemented Interfaces:
  Serializable, TransactionAttribute, TransactionDefinition

    public abstract class DelegatingTransactionAttribute

extends Object
implements TransactionAttribute, Serializable

`TransactionAttribute` implementation that delegates all calls to a given target `TransactionAttribute` 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:
  1.2
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
`DelegatingTransactionAttribute(TransactionAttribute targetAttribute)` Create a DelegatingTransactionAttribute for the given target attribute.

Method Summary
`boolean` | `equals(Object obj)`
`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.
`boolean` | `rollbackOn(Throwable ex)` Should we roll back on the given exception?
`String` | `toString()`

Methods inherited from class java.lang.Object
`clone, finalize, getClass, notify, notifyAll, wait, wait, wait`

Constructor Detail

### DelegatingTransactionAttribute

    public DelegatingTransactionAttribute(TransactionAttribute targetAttribute)

  Create a DelegatingTransactionAttribute for the given target attribute.

  Parameters:
    `targetAttribute` - 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`.

  Only makes sense in combination with `TransactionDefinition.PROPAGATION_REQUIRED` or `TransactionDefinition.PROPAGATION_REQUIRES_NEW`.

  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

### getTimeout

    public int getTimeout()

  Description copied from interface: `TransactionDefinition`
  Return the transaction timeout.

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

  Only makes sense in combination with `TransactionDefinition.PROPAGATION_REQUIRED` or `TransactionDefinition.PROPAGATION_REQUIRES_NEW`.

  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 that 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

    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 must (and 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()`

### rollbackOn

    public boolean rollbackOn(Throwable ex)

  Description copied from interface: `TransactionAttribute`
  Should we roll back on the given exception?

  Specified by:
    `rollbackOn` in interface `TransactionAttribute`
  Parameters:
    `ex` - the exception to evaluate
  Returns:
    whether to perform a rollback or not

### equals

    public boolean equals(Object obj)

  Overrides:
    `equals` in class `Object`

### hashCode

    public int hashCode()

  Overrides:
    `hashCode` in class `Object`

### toString

    public String toString()

  Overrides:
    `toString` in class `Object`

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