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Plugin for DataNucleus providing persistence to RDBMS datastores.
/*
* 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.datanucleus.store.rdbms.datasource.dbcp2.pool2.impl;
import org.datanucleus.store.rdbms.datasource.dbcp2.pool2.PooledObject;
/**
* Provides the default implementation of {@link EvictionPolicy} used by the
* pools. Objects will be evicted if the following conditions are met:
*
* - the object has been idle longer than
* {@link GenericObjectPool#getMinEvictableIdleTimeMillis()} /
* {@link GenericKeyedObjectPool#getMinEvictableIdleTimeMillis()}
* - there are more than {@link GenericObjectPool#getMinIdle()} /
* {@link GenericKeyedObjectPoolConfig#getMinIdlePerKey()} idle objects in
* the pool and the object has been idle for longer than
* {@link GenericObjectPool#getSoftMinEvictableIdleTimeMillis()} /
* {@link GenericKeyedObjectPool#getSoftMinEvictableIdleTimeMillis()}
*
* This class is immutable and thread-safe.
*
* @param the type of objects in the pool
*
* @version $Revision: $
*
* @since 2.0
*/
public class DefaultEvictionPolicy implements EvictionPolicy {
@Override
public boolean evict(EvictionConfig config, PooledObject underTest,
int idleCount) {
if ((config.getIdleSoftEvictTime() < underTest.getIdleTimeMillis() &&
config.getMinIdle() < idleCount) ||
config.getIdleEvictTime() < underTest.getIdleTimeMillis()) {
return true;
}
return false;
}
}