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

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