domdocumentfactory.java

Java的面向对象数据库系统的源代码

/*
 * Copyright 2001 (C) MetaStuff, Ltd. All Rights Reserved.
 *
 * This software is open source.
 * See the bottom of this file for the licence.
 *
 * $Id: DOMDocumentFactory.java,v 1.3 2003/11/02 18:04:59 per_nyfelt Exp $
 */

package org.dom4j.dom;

import org.dom4j.*;

import java.util.Map;

/** <p><code>DOMDocumentFactory</code> is a factory of DOM4J objects
  * which implement the W3C DOM API.</p>
  *
  * @author <a href="mailto:[e-mail]">James Strachan</a>
  * @version $Revision: 1.3 $
  */
public class DOMDocumentFactory extends DocumentFactory implements org.w3c.dom.DOMImplementation {

    /** The Singleton instance */
    //protected static transient DOMDocumentFactory singleton = new DOMDocumentFactory();
    private final static ThreadLocal singlePerThread=new ThreadLocal();
    private static String domDocumentFactoryClassName=null;



    /** <p>Access to the singleton instance of this factory.</p>
      *
      * @return the default singleon instance
      */
    public static DocumentFactory getInstance() {
      DOMDocumentFactory fact =(DOMDocumentFactory)singlePerThread.get();
       if (fact==null) {
         fact=  new DOMDocumentFactory();
         singlePerThread.set(fact);
        }
       if (fact==null){
       }
       return fact;
    }


    // Factory methods

    public Document createDocument() {
        DOMDocument answer = new DOMDocument();
        answer.setDocumentFactory( this );
        return answer;
    }

    public DocumentType createDocType(String name, String publicId, String systemId) {
        return new DOMDocumentType( name, publicId, systemId );
    }

    public Element createElement(QName qname) {
        return new DOMElement(qname);
    }

    public Element createElement(QName qname, int attributeCount) {
        return new DOMElement(qname, attributeCount);
    }

    public Attribute createAttribute(Element owner, QName qname, String value) {
        return new DOMAttribute(qname, value);
    }

    public CDATA createCDATA(String text) {
        return new DOMCDATA(text);
    }

    public Comment createComment(String text) {
        return new DOMComment(text);
    }

    public Text createText(String text) {
        return new DOMText(text);
    }

    public Entity createEntity(String name) {
        return new DOMEntityReference(name);
    }

    public Entity createEntity(String name, String text) {
        return new DOMEntityReference(name, text);
    }

    public Namespace createNamespace(String prefix, String uri) {
        return new DOMNamespace(prefix, uri);
    }


    public ProcessingInstruction createProcessingInstruction(String target, String data) {
        return new DOMProcessingInstruction(target, data);
    }

    public ProcessingInstruction createProcessingInstruction(String target, Map data) {
        return new DOMProcessingInstruction(target, data);
    }

    // org.w3c.dom.DOMImplementation interface

    public boolean hasFeature(String feature, String version) {
        return false;
    }

    public org.w3c.dom.DocumentType createDocumentType(
        String qualifiedName, String publicId, String systemId
    ) throws org.w3c.dom.DOMException {
        return new DOMDocumentType( qualifiedName, publicId, systemId );
    }

    public org.w3c.dom.Document createDocument(
        String namespaceURI,
        String qualifiedName,
        org.w3c.dom.DocumentType documentType
    ) throws org.w3c.dom.DOMException {
        DOMDocument document;
        if (documentType != null) {
            DOMDocumentType docType = asDocumentType( documentType );
            document = new DOMDocument( docType );
        } else {
            document = new DOMDocument();
        }

        document.addElement( createQName( qualifiedName, namespaceURI ) );
        return document;
   }


    // Implementation methods

    protected DOMDocumentType asDocumentType( org.w3c.dom.DocumentType documentType ) {
        if ( documentType instanceof DOMDocumentType ) {
            return (DOMDocumentType) documentType;
        }
        else {
            return new DOMDocumentType(
                documentType.getName(),
                documentType.getPublicId(),
                documentType.getSystemId()
            );
        }
    }

}




/*
 * Redistribution and use of this software and associated documentation
 * ("Software"), with or without modification, are permitted provided
 * that the following conditions are met:
 *
 * 1. Redistributions of source code must retain copyright
 *    statements and notices.  Redistributions must also contain a
 *    copy of this document.
 *
 * 2. Redistributions in binary form must reproduce the
 *    above copyright notice, this list of conditions and the
 *    following disclaimer in the documentation and/or other
 *    materials provided with the distribution.
 *
 * 3. The name "DOM4J" must not be used to endorse or promote
 *    products derived from this Software without prior written
 *    permission of MetaStuff, Ltd.  For written permission,
 *    please contact [e-mail].
 *
 * 4. Products derived from this Software may not be called "DOM4J"
 *    nor may "DOM4J" appear in their names without prior written
 *    permission of MetaStuff, Ltd. DOM4J is a registered
 *    trademark of MetaStuff, Ltd.
 *
 * 5. Due credit should be given to the DOM4J Project
 *    (http://dom4j.org/).
 *
 * THIS SOFTWARE IS PROVIDED BY METASTUFF, LTD. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
 * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
 * METASTUFF, LTD. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Copyright 2001 (C) MetaStuff, Ltd. All Rights Reserved.
 *
 * $Id: DOMDocumentFactory.java,v 1.3 2003/11/02 18:04:59 per_nyfelt Exp $
 */