org.apache.cxf.common.util.factory.ThreadSingletonPool 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.cxf.common.util.factory;
/**
* Represents a pooling strategy that pools the data into a ThreadLocal object.
*
* @author Ben Yu
*/
public class ThreadSingletonPool implements Pool {
private static final class ThreadLocalCache extends ThreadLocal {
protected Object initialValue() {
return new CachingPool();
}
CachingPool getPool() {
return (CachingPool)this.get();
}
}
private transient ThreadLocalCache cache = new ThreadLocalCache();
private void readObject(java.io.ObjectInputStream in) throws ClassNotFoundException, java.io.IOException {
in.defaultReadObject();
cache = new ThreadLocalCache();
}
public Object getInstance(Factory factory) throws Throwable {
return cache.getPool().getInstance(factory);
/*
* Object v = cache.get(); if(v==null){ v = factory.create();
* cache.set(v); } return v;
*/
}
public Object getPooledInstance(Object def) {
return cache.getPool().getPooledInstance(def);
}
public boolean isPooled() {
return cache.getPool().isPooled();
}
}