bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/adapter/impl/GraphTemplate.java

   1 /*******************************************************************************
   2  * Copyright (c) 2011 Association for Decentralized Information Management in
   3  * Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.db.layer0.adapter.impl;
  13
  14 import java.util.Map;
  15
  16 import org.simantics.databoard.Bindings;
  17 import org.simantics.db.ReadGraph;
  18 import org.simantics.db.Resource;
  19 import org.simantics.db.WriteGraph;
  20 import org.simantics.db.WriteOnlyGraph;
  21 import org.simantics.db.exception.DatabaseException;
  22 import org.simantics.db.layer0.adapter.Template;
  23 import org.simantics.graph.db.IImportAdvisor;
  24 import org.simantics.graph.db.TransferableGraphs;
  25 import org.simantics.graph.representation.Root;
  26 import org.simantics.graph.representation.TransferableGraph1;
  27 import org.simantics.layer0.Layer0;
  28
  29 public class GraphTemplate implements Template {
  30
  31     String[] parameters;
  32     TransferableGraph1 tg;
  33
  34     public GraphTemplate(String[] parameters, TransferableGraph1 tg) {
  35         this.parameters = parameters;
  36         this.tg = tg;
  37     }
  38
  39     public static GraphTemplate create(ReadGraph g, Resource r) throws DatabaseException {
  40         Layer0 l0 = Layer0.getInstance(g);
  41         String[] parameters = g.getRelatedValue(r, l0.HasTemplateParameters, Bindings.STRING_ARRAY);
  42         TransferableGraph1 tg = g.getRelatedValue(r, l0.HasTemplate, TransferableGraph1.BINDING);
  43         return new GraphTemplate(parameters, tg);
  44     }
  45
  46     @Override
  47     public void apply(WriteGraph graph, final Map<String, Object> parameters)
  48             throws DatabaseException {
  49         TransferableGraphs.importGraph1(graph, tg, new IImportAdvisor() {
  50             @Override
  51             public Resource createRoot(WriteOnlyGraph graph, Root root) throws DatabaseException {
  52                 String name = root.name;
  53                 Object obj = parameters.get(name);
  54                 if(obj == null) {
  55                     Resource r = graph.newResource();
  56                     parameters.put(name, r);
  57                     return r;
  58                 }
  59                 else {
  60                     Resource r;
  61                     if(obj instanceof Resource)
  62                         r = (Resource)obj;
  63                     else {
  64                         r = graph.newResource();
  65                         graph.claimValue(r, obj);
  66                     }
  67                     return r;
  68                 }
  69             }
  70
  71             @Override
  72             public Resource analyzeRoot(ReadGraph graph, Root root) throws DatabaseException {
  73                 return null;
  74             }
  75         });
  76     }
  77
  78 }