45 lines
1.8 KiB
Java
45 lines
1.8 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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* To provide a custom eviction policy (i.e. something other than {@link
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* DefaultEvictionPolicy} for a pool, users must provide an implementation of
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* this interface that provides the required eviction policy.
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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 interface EvictionPolicy<T> {
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/**
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* This method is called to test if an idle object in the pool should be
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* evicted or not.
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*
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* @param config The pool configuration settings related to eviction
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* @param underTest The pooled object being tested for eviction
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* @param idleCount The current number of idle objects in the pool including
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* the object under test
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* @return <code>true</code> if the object should be evicted, otherwise
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* <code>false</code>
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*/
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boolean evict(EvictionConfig config, PooledObject<T> underTest, int idleCount);
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}
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