/* | |
* 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.uima.aae; | |
import java.util.concurrent.ConcurrentHashMap; | |
public class SerializerCache { | |
// Map storing Serializer instance for each thread. The key to the | |
// map is a thread id. | |
private static ConcurrentHashMap<Long, UimaSerializer> serializerMap = | |
new ConcurrentHashMap<Long, UimaSerializer>(); | |
/** | |
* Returns an instance of a Serializer object. Uses current thread id | |
* to look up the Map. If the Map does not contain an entry for current | |
* thread, a new Serializer instance is created and added to the Map for | |
* future use. | |
* | |
* @return - Serializer instance | |
*/ | |
public static UimaSerializer lookupSerializerByThreadId() { | |
if ( !serializerMap.containsKey(Thread.currentThread().getId())) { | |
serializerMap.put(Thread.currentThread().getId(), new UimaSerializer()); | |
} | |
return serializerMap.get(Thread.currentThread().getId()); | |
} | |
} |