ozoneobjattsfactory.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 Core 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: OzoneObjAttsFactory.java,v 1.2 2002/08/27 08:32:26 per_nyfelt Exp $

package org.ozoneDB.core.xml;

import org.ozoneDB.OzoneObject;
import org.ozoneDB.core.ObjectID;

import org.xml.sax.Attributes;
import org.xml.sax.helpers.AttributesImpl;


/**
 * Class for setting additional attributes in the obj-Tag,
 * if the obj is an OzoneObject.
 *
 *
 * @version $Revision: 1.2 $
 * @author <a href="http://www.softwarebuero.de">SMB</a>
 */
class OzoneObjAttsFactory implements ObjAttsFactory {

    //
    // constants
    //
    public final static String ATTR_OBJNAME = "OzoneObjectName";
    public final static String ATTR_OBJID = "OzoneObjectID";


    //
    //constructor
    //
    public OzoneObjAttsFactory() {
    }


    //
    //method
    //


    /**
     * Method that returns additional attributes,
     * if the Object is an OzoneObject.
     *
     * @param obj (the Object)
     * @return Attributes (the additionally attributes)
     */
    public Attributes additionallyAtts( Object obj ) {

        if (obj instanceof OzoneObject) {
            ObjectID objID = ((OzoneObject)obj).container().id();
            String name = ((OzoneObject)obj).container().name();
            AttributesImpl atts = new AttributesImpl();
            atts.addAttribute( "", ATTR_OBJID, ATTR_OBJID, "long", "" + objID.value() );

            if (name != null) {
                atts.addAttribute( "", ATTR_OBJID, ATTR_OBJNAME, "String", name );
            }

            return atts;
        } else {
            return null;
        }
    }
}