commentimpl.java

用Java写的面相对象的数据库管理系统

/**
 * org/ozone-db/xml/dom/CommentImpl.java
 *
 * The contents of this file are subject to the OpenXML Public
 * License Version 1.0; you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 * http://www.openxml.org/license.html
 *
 * THIS SOFTWARE IS DISTRIBUTED ON AN "AS IS" BASIS WITHOUT WARRANTY
 * OF ANY KIND, EITHER EXPRESSED OR IMPLIED. THE INITIAL DEVELOPER
 * AND ALL CONTRIBUTORS SHALL NOT BE LIABLE FOR ANY DAMAGES AS A
 * RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
 * DERIVATIVES. SEE THE LICENSE FOR THE SPECIFIC LANGUAGE GOVERNING
 * RIGHTS AND LIMITATIONS UNDER THE LICENSE.
 *
 * The Initial Developer of this code under the License is Assaf Arkin.
 * Portions created by Assaf Arkin are Copyright (C) 1998, 1999.
 * All Rights Reserved.
 */

/**
 * Changes for Persistent DOM running with ozone are
 * Copyright 1999 by SMB GmbH. All rights reserved.
 */

package org.ozoneDB.xml.dom;

import java.util.*;
import org.w3c.dom.*;


/**
 * Implements a {@link org.w3c.dom.Comment} object. This is a text data object
 * whose value can be manipulated using the {@link org.w3c.dom.CharacterData}\
 * interface and does not support children.
 * <P>
 * Notes:
 * <OL>
 * <LI>Node type is {@link org.w3c.dom.Node#COMMENT_NODE}
 * <LI>Node does not support childern
 * <LI>Node name is always "#comment"
 * </OL>
 *
 *
 * @version $Revision: 1.12 $ $Date: 2000/10/28 16:55:23 $
 * @author <a href="mailto:[e-mail]">Assaf Arkin</a>
 * @see org.w3c.dom.Comment
 * @see CharacterDataImpl
 */
public final class CommentImpl extends CharacterDataImpl implements CommentProxy {
    
    final static long serialVersionUID = 1;
    
    
    public short getNodeType() {
        return COMMENT_NODE;
    } 
    
    
    public final Object clone() {
        CommentProxy clone = null;
        try {
            clone = (CommentProxy)database().createObject( CommentImpl.class.getName() );
            clone.init( _ownerDocument, getNodeValue() );
            cloneInto( (NodeProxy)clone, true );
        } catch (Exception except) {
            throw new DOMExceptionImpl( DOMExceptionImpl.PDOM_ERR, except.getMessage() );
        } 
        return clone;
    } 
    
    
    public final Node cloneNode( boolean deep ) {
        CommentProxy clone = null;
        try {
            clone = (CommentProxy)database().createObject( CommentImpl.class.getName() );
            clone.init( _ownerDocument, getNodeValue() );
            cloneInto( (NodeProxy)clone, deep );
        } catch (Exception except) {
            throw new DOMExceptionImpl( DOMExceptionImpl.PDOM_ERR, except.getMessage() );
        } 
        return clone;
    } 
    
    
    public String toString() {
        String value;
        
        value = getData();
        if (value.length() > 64) {
            value = value.substring( 0, 64 ) + "..";
        } 
        value = value.replace( '\n', '|' );
        return "Comment node: [" + value + "]";
    } 
    
    
    /**
     * Hidden constructor.
     *
     * @param owner The owner of this document
     * @param comment Comment text
     */
    public CommentImpl( DocumentImpl owner, String comment ) {
        super();
        super.init( owner, "#comment", comment );
    }
    
    
    public CommentImpl() {
        super();
    }
    
    
    public final void init( DocumentProxy owner, String comment ) {
        super.init( owner, "#comment", comment );
    } 
    
}