org.apache.cxf.common.util.factory.Pool Maven / Gradle / Ivy
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* 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 for certain object instance.
*
* @author Ben Yu
*/
public interface Pool extends java.io.Serializable {
/**
* Apply the pooling strategy and return an instance from either the pool or
* the factory.
*
* @param factory the factory to create the object instance.
* @return the object instance.
*/
Object getInstance(Factory factory) throws Throwable;
/**
* Get the instance that's already pooled.
*
* @param def the default value to return if there's no pooled instance.
* @return the pooled instance or the default object.
*/
Object getPooledInstance(Object def);
/**
* Is this pool currently having something in cache?
*/
boolean isPooled();
}