org.wanghy.cache.key
Class HashCodeCacheKeyGenerator

java.lang.Object
  org.wanghy.cache.key.HashCodeCacheKeyGenerator

All Implemented Interfaces:

CacheKeyGenerator

public class HashCodeCacheKeyGenerator

extends Object

implements CacheKeyGenerator

Generates the key for a cache entry using the hashCode of the intercepted method and its arguments.

Version:

$Revision: 1.5 $ $Date: 2005/03/03 02:18:11 $

Author:

Alex Ruiz

Field Summary

private boolean

generateArgumentHashCode Flag that indicates if this generator should generate the hash code of the arguments passed to the method to apply caching to.

Constructor Summary

HashCodeCacheKeyGenerator()
Constructor.

HashCodeCacheKeyGenerator(boolean generateArgumentHashCode)
Constructor.

Method Summary

CacheKey	generateKey(MethodInvocation methodInvocation) Generates the key for a cache entry.
protected int	getMethodArgumentHashCode(Object methodArgument) Returns the hash code of the specified method argument.
void	setGenerateArgumentHashCode(boolean generateArgumentHashCode) Setter for the field generateArgumentHashCode.

Methods inherited from class java.lang.Object

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

Field Detail

generateArgumentHashCode

private boolean generateArgumentHashCode

Flag that indicates if this generator should generate the hash code of the arguments passed to the method to apply caching to. If false, this generator uses the default hash code of the arguments.

Constructor Detail

HashCodeCacheKeyGenerator

public HashCodeCacheKeyGenerator()

Constructor.

HashCodeCacheKeyGenerator

public HashCodeCacheKeyGenerator(boolean generateArgumentHashCode)

Constructor.

Parameters:

generateArgumentHashCode - the new value for generateArgumentHashCode.

Method Detail

generateKey

public final CacheKey generateKey(MethodInvocation methodInvocation)

Description copied from interface: CacheKeyGenerator

Generates the key for a cache entry.

Specified by:

generateKey in interface CacheKeyGenerator

Parameters:

methodInvocation - the description of an invocation to the intercepted method.

Returns:

the key for a cache entry.

See Also:

CacheKeyGenerator.generateKey(MethodInvocation)

getMethodArgumentHashCode

protected final int getMethodArgumentHashCode(Object methodArgument)

Returns the hash code of the specified method argument.

Parameters:

methodArgument - the method argument.

Returns:

the hash code of the specified method argument.

setGenerateArgumentHashCode

public final void setGenerateArgumentHashCode(boolean generateArgumentHashCode)

Setter for the field generateArgumentHashCode.

Parameters:

generateArgumentHashCode - the new value to set