All Downloads are FREE. Search and download functionalities are using the official Maven repository.

com.frameworkset.commons.pool2.BaseObjectPool Maven / Gradle / Ivy

Go to download

bboss is a j2ee framework include aop/ioc,mvc,persistent,taglib,rpc,event ,bean-xml serializable and so on.http://www.bbossgroups.com

The newest version!
/*
 * 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 com.frameworkset.commons.pool2;

/**
 * A simple base implementation of {@link ObjectPool}.
 * Optional operations are implemented to either do nothing, return a value
 * indicating it is unsupported or throw {@link UnsupportedOperationException}.
 * 

* This class is intended to be thread-safe. *

* * @param Type of element pooled in this pool. * * @since 2.0 */ public abstract class BaseObjectPool extends BaseObject implements ObjectPool { public void addObjects(final int count) throws Exception { for (int i = 0; i < count; i++) { addObject(); } } @Override public abstract T borrowObject() throws Exception; @Override public abstract void returnObject(T obj) throws Exception; @Override public abstract void invalidateObject(T obj) throws Exception; /** * Not supported in this base implementation. * * @return a negative value. */ @Override public int getNumIdle() { return -1; } /** * Not supported in this base implementation. * * @return a negative value. */ @Override public int getNumActive() { return -1; } /** * Not supported in this base implementation. * * @throws UnsupportedOperationException if the pool does not implement this * method */ @Override public void clear() throws Exception, UnsupportedOperationException { throw new UnsupportedOperationException(); } /** * Not supported in this base implementation. Subclasses should override * this behavior. * * @throws UnsupportedOperationException if the pool does not implement this * method */ @Override public void addObject() throws Exception, UnsupportedOperationException { throw new UnsupportedOperationException(); } /** * {@inheritDoc} *

* This affects the behavior of isClosed and * assertOpen. *

*/ @Override public void close() { closed = true; } /** * Has this pool instance been closed. * * @return true when this pool has been closed. */ public final boolean isClosed() { return closed; } /** * Throws an IllegalStateException when this pool has been * closed. * * @throws IllegalStateException when this pool has been closed. * * @see #isClosed() */ protected final void assertOpen() throws IllegalStateException { if (isClosed()) { throw new IllegalStateException("Pool not open"); } } private volatile boolean closed = false; @Override protected void toStringAppendFields(final StringBuilder builder) { builder.append("closed="); builder.append(closed); } }




© 2015 - 2024 Weber Informatics LLC | Privacy Policy