/*
 * Copyright (C) 2003-2004 Red Hat Inc. All Rights Reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 */
package com.redhat.persistence;

import com.redhat.persistence.metadata.ObjectType;
import com.redhat.persistence.metadata.Property;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Set;

/**
 * PropertyMap
 *
 * @author Rafael H. Schloming &lt;rhs@mit.edu&gt;
 * @version $Revision: #7 $ $Date: 2004/08/16 $
 **/

public class PropertyMap {

    public final static String versionId = "$Id: PropertyMap.java 287 2005-02-22 00:29:02Z sskracic $ by $Author: sskracic $, $DateTime: 2004/08/16 18:10:38 $";

    private ObjectType m_type;
    private HashMap m_values = new HashMap();

    public PropertyMap(ObjectType type) {
        m_type = type;
    }

    public ObjectType getObjectType() {
        return m_type;
    }

    public Object get(Property prop) {
        return m_values.get(prop);
    }

    public void put(Property prop, Object obj) {
        m_values.put(prop, obj);
    }

    public Set entrySet() {
        return m_values.entrySet();
    }

    public boolean isNull() {
        Collection keys = m_type.getKeyProperties();
        if (keys.size() == 0) {
            return false;
        }

        for (Iterator it = keys.iterator(); it.hasNext(); ) {
            Property prop = (Property) it.next();
            if (get(prop) != null) {
                return false;
            }
        }

        return true;
    }

    public String toString() {
        return "<properties type=" + m_type + " values=" + m_values + ">";
    }

}
