org.springframework.transaction.interceptor
Class AttributesTransactionAttributeSource

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

All Implemented Interfaces:

TransactionAttributeSource

public class AttributesTransactionAttributeSource

extends java.lang.Object

implements TransactionAttributeSource

Implementation of TransactionAttributeSource that uses attributes from an Attributes implementation.

Defaults to using class's transaction attribute if none is associated with the target method. Any transaction attribute associated with the target method completely overrides a class transaction attribute.

This implementation caches attributes by method after they are first used. If it's ever desirable to allow dynamic changing of transaction attributes (unlikely) caching could be made configurable. Caching is desirable because of the cost of evaluating rollback rules.

Version:

$Id: AttributesTransactionAttributeSource.java,v 1.8 2004/05/26 10:48:57 jhoeller Exp $

Author:

Rod Johnson

See Also:

Attributes

Field Summary

protected org.apache.commons.logging.Log

logger

Constructor Summary

AttributesTransactionAttributeSource(Attributes attributes)

Method Summary

protected TransactionAttribute	computeTransactionAttribute(java.lang.reflect.Method method, java.lang.Class targetClass) Same return as getTransactionAttribute method, but doesn't cache the result.
protected TransactionAttribute	findTransactionAttribute(java.util.Collection atts) Return the transaction attribute, given this set of attributes attached to a method or class.
TransactionAttribute	getTransactionAttribute(java.lang.reflect.Method method, java.lang.Class targetClass) Return the transaction attribute for this method invocation.

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected final org.apache.commons.logging.Log logger

Constructor Detail

AttributesTransactionAttributeSource

public AttributesTransactionAttributeSource(Attributes attributes)

Method Detail

getTransactionAttribute

public TransactionAttribute getTransactionAttribute(java.lang.reflect.Method method,
                                                    java.lang.Class targetClass)

Return the transaction attribute for this method invocation. Defaults to the class's transaction attribute if no method attribute is found

Specified by:

getTransactionAttribute in interface TransactionAttributeSource

Parameters:

method - method for the current invocation. Can't be null

targetClass - target class for this invocation. May be null.

Returns:

TransactionAttribute for this method, or null if the method is non-transactional

computeTransactionAttribute

protected TransactionAttribute computeTransactionAttribute(java.lang.reflect.Method method,
                                                           java.lang.Class targetClass)

Same return as getTransactionAttribute method, but doesn't cache the result. getTransactionAttribute is a caching decorator for this method.

findTransactionAttribute

protected TransactionAttribute findTransactionAttribute(java.util.Collection atts)

Return the transaction attribute, given this set of attributes attached to a method or class. Protected rather than private as subclasses may want to customize how this is done: for example, returning a TransactionAttribute affected by the values of other attributes. This implementation takes into account RollbackRuleAttributes, if the TransactionAttribute is a RuleBasedTransactionAttribute. Return null if it's not transactional.

Parameters:

atts - attributes attached to a method or class. May be null, in which case a null TransactionAttribute will be returned.

Returns:

TransactionAttribute configured transaction attribute, or null if none was found