org.apache.bval.MetaBeanCache Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.bval;
import java.io.Serializable;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import org.apache.bval.model.MetaBean;
/**
* Description: a cache to hold metabeans by id and by class.
*/
public class MetaBeanCache implements MetaBeanFinder, Serializable {
private static final long serialVersionUID = 1L;
/**
* Cache keyed by id.
*/
protected final ConcurrentMap cacheById = new ConcurrentHashMap();
/**
* Cache keyed by class.
*/
protected final ConcurrentMap, MetaBean> cacheByClass = new ConcurrentHashMap, MetaBean>();
/**
* Create a new MetaBeanCache instance.
*/
public MetaBeanCache() {
super();
}
/**
* Create a new MetaBeanCache instance.
* @param beans
*/
public MetaBeanCache(Map beans) {
this();
for (MetaBean bean : beans.values()) {
cache(bean);
}
}
/**
* Clear the cache.
*/
public void clear() {
cacheById.clear();
cacheByClass.clear();
}
/**
* {@inheritDoc}
*/
public MetaBean findForId(String beanInfoId) {
return cacheById.get(beanInfoId);
}
/**
* {@inheritDoc}
*/
public MetaBean findForClass(Class clazz) {
return cacheByClass.get(clazz);
}
/**
* Return all cached MetaBeans by id.
* @return live map
*/
public Map findAll() {
return cacheById;
}
/**
* Cache the specified MetaBean.
* @param beanInfo
*/
public void cache(MetaBean beanInfo) {
cacheById.put(beanInfo.getId(), beanInfo);
if (beanInfo.getBeanClass() != null &&
beanInfo.getId().equals(beanInfo.getBeanClass().getName())) {
cacheByClass.putIfAbsent(beanInfo.getBeanClass(), beanInfo);
}
}
/**
* Remove a single MetaBean from the cache.
* @param beanInfo
*/
public void removeFromCache(MetaBean beanInfo) {
cacheById.remove(beanInfo.getId());
if (beanInfo.getBeanClass() != null &&
beanInfo.getId().equals(beanInfo.getBeanClass().getName())) {
cacheByClass.remove(beanInfo.getBeanClass());
}
}
}