com.googlecode.ehcache.annotations.key.StringCacheKeyGenerator Maven / Gradle / Ivy
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Provides a simple model for integrating Ehcache in a Spring project via annotations.
/**
* Copyright 2010 Nicholas Blair, Eric Dalquist
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.googlecode.ehcache.annotations.key;
import java.io.Serializable;
import java.util.Arrays;
import java.util.List;
/**
* Uses {@link Arrays#deepToString(Object[])} to generate a cache key. This is a decent compromise on using
* {@link ListCacheKeyGenerator} if all arguments implement toString well since hashCode and equals operations
* on the generated key are much faster than on the {@link List} returned by {@link ListCacheKeyGenerator} and
* the chance of key collision is very small for objects with a well implemented toString.
*
*
*
* Pros
* Cons
*
*
*
* Faster both for key generation and key comparison than {@link ListCacheKeyGenerator}.
*
*
* Depends on all arguments implementing toString well enough to represent each argument's
* identity.
*
*
*
*
* Arguments do not have to implement {@link Serializable}
*
*
*
*
*
*
* @author Eric Dalquist
* @version $Revision: 165 $
*/
public class StringCacheKeyGenerator extends AbstractCacheKeyGenerator {
public static final String DEFAULT_BEAN_NAME = "com.googlecode.ehcache.annotations.key.StringCacheKeyGenerator.DEFAULT_BEAN_NAME";
public StringCacheKeyGenerator() {
}
public StringCacheKeyGenerator(boolean includeMethod, boolean includeParameterTypes) {
super(includeMethod, includeParameterTypes);
}
@Override
protected String generateKey(Object... data) {
return Arrays.deepToString(data);
}
}