org.cristalise.kernel.collection.AggregationDescription Maven / Gradle / Ivy

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/**
 * This file is part of the CRISTAL-iSE kernel.
 * Copyright (c) 2001-2015 The CRISTAL Consortium. 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 3 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; with out 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.
 *
 * http://www.fsf.org/licensing/licenses/lgpl.html
 */
package org.cristalise.kernel.collection;

import org.cristalise.kernel.common.InvalidCollectionModification;
import org.cristalise.kernel.common.ObjectAlreadyExistsException;
import org.cristalise.kernel.common.ObjectNotFoundException;
import org.cristalise.kernel.graph.model.Vertex;
import org.cristalise.kernel.property.PropertyDescriptionList;
import org.cristalise.kernel.property.PropertyUtility;
import org.cristalise.kernel.utils.Logger;

/**
 * The description of a Collection with a graph layout. Each slot is 
 * instantiated empty in the resulting Aggregation, with ClassProps taken from
 * the PropertyDescription outcome of the description slot's referenced Item.
 */
public class AggregationDescription extends Aggregation implements CollectionDescription {

    public AggregationDescription() {
        setName("AggregationDescription");
    }

    public AggregationDescription(String name) {
        setName(name);
    }

    public AggregationDescription(String name, Integer version) {
        setName(name);
        setVersion(version);
    }

    /**
     * For each  member get the {@link PropertyDescriptionList} of the member item and look for an explicit version
     * 
     */
    @Override
    public Aggregation newInstance() throws ObjectNotFoundException {
        AggregationInstance newInstance = new AggregationInstance(getName());
        
        for (int i = 0; i < size(); i++) {
            AggregationMember mem = mMembers.list.get(i);
            // 
            String descVer = getDescVer(mem);
            PropertyDescriptionList pdList = PropertyUtility.getPropertyDescriptionOutcome(mem.getItemPath(), descVer, null);

            if (pdList != null) {
                // create the new props of the member object
                try {
                    Vertex v = getLayout().getVertexById(mem.getID());
                    newInstance.addMember(null, PropertyUtility.convertTransitiveProperties(pdList), pdList.getClassProps(), v.getCentrePoint(), v.getWidth(), v.getHeight());
                }
                catch (InvalidCollectionModification e) {}
                catch (ObjectAlreadyExistsException e) {}
            }
            else {
                Logger.error("AggregationDescription::newInstance() There is no PropertyDescription. Cannot instantiate. " + mem.getItemPath());
                return null;
            }
        }
        return newInstance;
    }
}