83 lines
2.5 KiB
Java
83 lines
2.5 KiB
Java
/*
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* BEGIN_HEADER - DO NOT EDIT
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*
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* The contents of this file are subject to the terms
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* of the Common Development and Distribution License
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* (the "License"). You may not use this file except
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* in compliance with the License.
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*
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* You can obtain a copy of the license at
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* https://open-jbi-components.dev.java.net/public/CDDLv1.0.html.
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* See the License for the specific language governing
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* permissions and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL
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* HEADER in each file and include the License file at
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* https://open-jbi-components.dev.java.net/public/CDDLv1.0.html.
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* If applicable add the following below this CDDL HEADER,
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* with the fields enclosed by brackets "[]" replaced with
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* your own identifying information: Portions Copyright
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* [year] [name of copyright owner]
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*/
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/*
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* @(#)TransformerPool.java
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*
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* Copyright 2004-2007 Sun Microsystems, Inc. All Rights Reserved.
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*
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* END_HEADER - DO NOT EDIT
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*/
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package org.glassfish.openesb.databasebc.util;
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import java.util.LinkedList;
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import javax.xml.transform.Transformer;
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import javax.xml.transform.TransformerConfigurationException;
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import javax.xml.transform.TransformerFactory;
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public class TransformerPool {
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private static final TransformerFactory cTransformerFact =
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TransformerFactory.newInstance();
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private final LinkedList<Transformer> mTransformers;
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/** Creates a new instance of TransformerPool */
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public TransformerPool() {
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mTransformers = new LinkedList<Transformer>();
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}
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public TransformerPool(int size) throws TransformerConfigurationException {
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this();
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for (int i = 0; i < size; ++i) {
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mTransformers.addFirst(cTransformerFact.newTransformer());
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}
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}
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public Transformer retrieve() throws TransformerConfigurationException {
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Transformer transformer = null;
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synchronized(this) {
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if (!mTransformers.isEmpty()) {
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transformer = mTransformers.removeFirst();
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} else {
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transformer = cTransformerFact.newTransformer();
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}
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}
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return transformer;
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}
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public boolean relinquish(Transformer transformer) {
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boolean success = false;
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if (transformer != null) {
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synchronized (this) {
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if (!mTransformers.contains(transformer)) {
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mTransformers.addFirst(transformer);
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success = true;
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}
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}
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}
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return success;
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}
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}
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