56 lines
2.2 KiB
Java
56 lines
2.2 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.tomcat.dbcp.pool2.impl;
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import org.apache.tomcat.dbcp.pool2.PooledObject;
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/**
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* Provides the default implementation of {@link EvictionPolicy} used by the
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* pools. Objects will be evicted if the following conditions are met:
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* <ul>
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* <li>the object has been idle longer than
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* {@link GenericObjectPool#getMinEvictableIdleTimeMillis()} /
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* {@link GenericKeyedObjectPool#getMinEvictableIdleTimeMillis()}</li>
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* <li>there are more than {@link GenericObjectPool#getMinIdle()} /
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* {@link GenericKeyedObjectPoolConfig#getMinIdlePerKey()} idle objects in
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* the pool and the object has been idle for longer than
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* {@link GenericObjectPool#getSoftMinEvictableIdleTimeMillis()} /
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* {@link GenericKeyedObjectPool#getSoftMinEvictableIdleTimeMillis()}
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* </ul>
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* <p>
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* This class is immutable and thread-safe.
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* </p>
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*
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* @param <T> the type of objects in the pool
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*
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* @since 2.0
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*/
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public class DefaultEvictionPolicy<T> implements EvictionPolicy<T> {
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@Override
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public boolean evict(final EvictionConfig config, final PooledObject<T> underTest,
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final int idleCount) {
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if ((config.getIdleSoftEvictTime() < underTest.getIdleTimeMillis() &&
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config.getMinIdle() < idleCount) ||
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config.getIdleEvictTime() < underTest.getIdleTimeMillis()) {
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return true;
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}
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return false;
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}
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}
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