Java XML DocumentBuilder Create getDocumentBuilder()

Description

Retrieves a thread-specific DocumentBuilder.

License

LGPL

Return

the DocumentBuilder serving the current thread.

Declaration

public static DocumentBuilder getDocumentBuilder() 

Method Source Code

//package com.java2s;
/* /*from  w w w  . j  a  va 2s . c  o  m*/
 * This file is part of the Echo Web Application Framework (hereinafter "Echo").
 * Copyright (C) 2002-2009 NextApp, Inc.
 *
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (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.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 */

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;

public class Main {
    /**
     * ThreadLocal cache of <code>DocumentBuilder</code> instances.
     */
    private static final ThreadLocal documentBuilders = new ThreadLocal() {

        /**
         * @see java.lang.ThreadLocal#initialValue()
         */
        protected Object initialValue() {
            try {
                DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
                factory.setNamespaceAware(true);
                DocumentBuilder builder = factory.newDocumentBuilder();
                return builder;
            } catch (ParserConfigurationException ex) {
                throw new RuntimeException(ex);
            }
        }
    };

    /**
     * Retrieves a thread-specific <code>DocumentBuilder</code>.
     * 
     * @return the <code>DocumentBuilder</code> serving the current thread.
     */
    public static DocumentBuilder getDocumentBuilder() {
        return (DocumentBuilder) documentBuilders.get();
    }
}

Related

1. getDocumentBuilder()
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