ozonecommentimpl.java

Java的面向对象数据库系统的源代码

// You can redistribute this software and/or modify it under the terms of
// the Ozone Library License version 1 published by ozone-db.org.
//
// The original code and portions created by SMB are
// Copyright (C) 1997-@year@ by SMB GmbH. All rights reserved.
//
// $Id: OzoneCommentImpl.java,v 1.1 2003/11/02 18:10:03 per_nyfelt Exp $
package org.ozoneDB.xml.dom4j.o3impl;

import org.dom4j.*;
import org.ozoneDB.OzoneCompatible;
import org.ozoneDB.OzoneInterface;
import org.ozoneDB.OzoneRemoteException;
import org.ozoneDB.xml.dom4j.OzoneComment;
import org.ozoneDB.xml.dom4j.OzoneDocumentFactory;

/**
 *
 * @author Per Nyfelt
 */
public class OzoneCommentImpl extends DefaultComment implements OzoneComment, OzoneCompatible {

    final static long serialVersionUID = 1L;

    private void init() {
    }

    public static OzoneComment create(OzoneInterface db, String text) {
        return (OzoneComment) db
                .createObject(OzoneCommentImpl.class,
                        new Class[] {String.class},
                        new Object[]{text});
    }

    /** @param text is the Comment text
     */
    public OzoneCommentImpl(String text) {
        super(text);
        init();
    }

    public static OzoneComment create(OzoneInterface db, Element parent, String text) {
        Class[] signature = new Class[] {Element.class, String.class};
        return (OzoneComment) db
                .createObject(OzoneCommentImpl.class,
                        signature,
                        new Object[]{parent, text});
    }

    /** @param parent is the parent element
     * @param text is the Comment text
     */
    public OzoneCommentImpl(Element parent, String text) {
        super(parent, text);
        init();
    }

    public DocumentFactory getDocumentFactory() {
        throw new OzoneRemoteException("getDocumentFactory will not work in Ozone");
    }

    protected NodeFactory getNodeFactory() {
        try {
            // todo: might be faster to return super.getNodeFactory() if it is instanceof OzoneCompatible first
            // before falling back to object for name look-up
            return (NodeFactory) database().objectForName(OzoneDocumentFactory.OBJECT_NAME);
        } catch (Exception e) {
            throw new OzoneRemoteException("NodeFctory not registered" + e.toString());
        }
    }

    protected XPathFactory getXPathFactory() {
        try {
            // todo: might be faster to return super.getXPathFactory() if it is instanceof OzoneCompatible first
            // before falling back to object for name look-up
            return (XPathFactory) database().objectForName(OzoneDocumentFactory.OBJECT_NAME);
        } catch (Exception e) {
            throw new OzoneRemoteException("XPathFactory not registered" + e.toString());
        }
    }

    public Object clone() {
        try {
            Node answer = (Node) database().copyObject(self());
            answer.setDocument(null);
            answer.setParent(null);
            return answer;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }

    public void onCreate() {
    }

    public void onActivate() {
    }

    public void onPassivate() {
    }

    public void onDelete() {
    }

}