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Java Source Code / Java Documentation » J2EE » spring framework 2.5 » org.springframework.transaction.interceptor 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


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

All known Subclasses:   org.springframework.transaction.interceptor.AttributesTransactionAttributeSource,  org.springframework.transaction.annotation.AnnotationTransactionAttributeSource,
AbstractFallbackTransactionAttributeSource
abstract public class AbstractFallbackTransactionAttributeSource implements TransactionAttributeSource(Code)
Abstract implementation of TransactionAttributeSource that caches attributes for methods and implements a fallback policy: 1. specific target method; 2. target class; 3. declaring method; 4. declaring class/interface.

Defaults to using the target 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. If none found on the target class, the interface that the invoked method has been called through (in case of a JDK proxy) will be checked.

This implementation caches attributes by method after they are first used. If it is ever desirable to allow dynamic changing of transaction attributes (which is very unlikely), caching could be made configurable. Caching is desirable because of the cost of evaluating rollback rules.
author:
   Rod Johnson
author:
   Juergen Hoeller
since:
   1.1



Field Summary
final  MapattributeCache
     Cache of TransactionAttributes, keyed by DefaultCacheKey (Method + target Class).
final protected  Loglogger
     Logger available to subclasses.


Method Summary
protected  booleanallowPublicMethodsOnly()
     Should only public methods be allowed to have transactional semantics?

The default implementation returns false.

abstract protected  TransactionAttributefindTransactionAttribute(Method method)
     Subclasses need to implement this to return the transaction attribute for the given method, if any.
abstract protected  TransactionAttributefindTransactionAttribute(Class clazz)
     Subclasses need to implement this to return the transaction attribute for the given class, if any.
protected  ObjectgetCacheKey(Method method, Class targetClass)
     Determine a cache key for the given method and target class.
public  TransactionAttributegetTransactionAttribute(Method method, Class targetClass)
     Determine the transaction attribute for this method invocation.

Field Detail
attributeCache
final Map attributeCache(Code)
Cache of TransactionAttributes, keyed by DefaultCacheKey (Method + target Class).

As this base class is not marked Serializable, the cache will be recreated after serialization - provided that the concrete subclass is Serializable.




logger
final protected Log logger(Code)
Logger available to subclasses.

As this base class is not marked Serializable, the logger will be recreated after serialization - provided that the concrete subclass is Serializable.






Method Detail
allowPublicMethodsOnly
protected boolean allowPublicMethodsOnly()(Code)
Should only public methods be allowed to have transactional semantics?

The default implementation returns false.




findTransactionAttribute
abstract protected TransactionAttribute findTransactionAttribute(Method method)(Code)
Subclasses need to implement this to return the transaction attribute for the given method, if any.
Parameters:
  method - the method to retrieve the attribute for all transaction attribute associated with this method(or null if none)



findTransactionAttribute
abstract protected TransactionAttribute findTransactionAttribute(Class clazz)(Code)
Subclasses need to implement this to return the transaction attribute for the given class, if any.
Parameters:
  clazz - the class to retrieve the attribute for all transaction attribute associated with this class(or null if none)



getCacheKey
protected Object getCacheKey(Method method, Class targetClass)(Code)
Determine a cache key for the given method and target class.

Must not produce same key for overloaded methods. Must produce same key for different instances of the same method.
Parameters:
  method - the method (never null)
Parameters:
  targetClass - the target class (may be null) the cache key (never null)




getTransactionAttribute
public TransactionAttribute getTransactionAttribute(Method method, Class targetClass)(Code)
Determine the transaction attribute for this method invocation.

Defaults to the class's transaction attribute if no method attribute is found.
Parameters:
  method - the method for the current invocation (never null)
Parameters:
  targetClass - the target class for this invocation (may be null) TransactionAttribute for this method, or null if the methodis not transactional




Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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