1 /*******************************************************************************
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2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
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3 * in Industry THTH ry.
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4 * All rights reserved. This program and the accompanying materials
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5 * are made available under the terms of the Eclipse Public License v1.0
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6 * which accompanies this distribution, and is available at
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7 * http://www.eclipse.org/legal/epl-v10.html
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10 * VTT Technical Research Centre of Finland - initial API and implementation
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11 *******************************************************************************/
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12 package org.simantics.db.layer0.request;
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14 import java.util.Collection;
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15 import java.util.Map;
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17 import org.simantics.db.Resource;
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18 import org.simantics.db.WriteGraph;
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19 import org.simantics.db.common.utils.CommonDBUtils;
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20 import org.simantics.db.exception.DatabaseException;
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21 import org.simantics.layer0.Layer0;
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24 * Instantiates given type using templates attached to the type.
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25 * @author Hannu Niemistö
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27 public class InstantiateRequest extends ApplyTemplatesRequest {
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30 public InstantiateRequest(Resource type, Map<String, Object> parameters,
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31 Collection<Resource> contexts) {
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32 super(parameters, contexts);
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36 public InstantiateRequest(Resource type, Map<String, Object> parameters) {
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41 public InstantiateRequest(Resource type) {
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46 public Resource perform(WriteGraph g) throws DatabaseException {
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47 Layer0 b = Layer0.getInstance(g);
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49 Resource parent = (Resource)parameters.get("parent");
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50 if(parent != null) CommonDBUtils.selectClusterSet(g, parent);
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52 // Default instantiation logic
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53 Resource instance = g.newResource();
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54 g.newClusterSet(instance);
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55 g.claim(instance, b.InstanceOf, null, type);
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57 perform(g, instance);
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