bundles/org.simantics.graphfile/src/org/simantics/graphfile/adapters/SystemResourcePasteImportAdvisor.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2013 Association for Decentralized Information Management\r
   3  * in 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.graphfile.adapters;\r
  13 \r
  14 import java.util.HashMap;\r
  15 import java.util.Map;\r
  16 \r
  17 import org.simantics.databoard.Bindings;\r
  18 import org.simantics.db.ReadGraph;\r
  19 import org.simantics.db.Resource;\r
  20 import org.simantics.db.WriteGraph;\r
  21 import org.simantics.db.WriteOnlyGraph;\r
  22 import org.simantics.db.common.request.FreshEscapedName;\r
  23 import org.simantics.db.exception.DatabaseException;\r
  24 import org.simantics.db.layer0.request.PossibleModel;\r
  25 import org.simantics.graph.db.IImportAdvisor;\r
  26 import org.simantics.graph.representation.Root;\r
  27 import org.simantics.graphfile.ontology.GraphFileResource;\r
  28 import org.simantics.layer0.Layer0;\r
  29 \r
  30 public class SystemResourcePasteImportAdvisor implements IImportAdvisor {\r
  31 \r
  32         protected Resource root;\r
  33         protected Resource library;\r
  34         protected Resource model;\r
  35         protected String singleType = null;\r
  36         protected Map<String, String> nameMappings = new HashMap<String, String>();\r
  37         \r
  38         public SystemResourcePasteImportAdvisor(ReadGraph graph, Resource library) throws DatabaseException {\r
  39                 this.library = library;\r
  40                 this.model = graph.syncRequest(new PossibleModel(library));\r
  41         }\r
  42 \r
  43         public Resource getTarget() {\r
  44                 return library;\r
  45         }\r
  46 \r
  47         public Resource analyzeType(ReadGraph graph, Root root) throws DatabaseException {\r
  48                 return null;\r
  49         }\r
  50         \r
  51         @Override\r
  52         public Resource analyzeRoot(ReadGraph graph, Root root) throws DatabaseException {\r
  53                 \r
  54                 if("%model".equals(root.name)) return model;\r
  55                 \r
  56                 analyzeType(graph, root);\r
  57 \r
  58                 String type = root.type;\r
  59                 if(singleType != null) {\r
  60                         if(!type.equals(singleType)) throw new DatabaseException("Paste of a set of different types of objects is not supported.");\r
  61                 } else {\r
  62                         singleType = type;\r
  63                 }\r
  64                 \r
  65                 String newName = newName(graph, library, root.name);\r
  66                 nameMappings.put(root.name, newName);\r
  67                 \r
  68                 return null;\r
  69 \r
  70         }\r
  71         \r
  72         public String newName(ReadGraph graph, Resource library, String name) throws DatabaseException {\r
  73                 return graph.syncRequest(new FreshEscapedName(library, GraphFileResource.getInstance(graph).HasSystemResource, name));\r
  74         }\r
  75 \r
  76         @Override\r
  77         public Resource createRoot(WriteOnlyGraph graph, Root root) throws DatabaseException {\r
  78                 \r
  79                 Layer0 l0 = graph.getService(Layer0.class);\r
  80 \r
  81                 this.root = graph.newResource();\r
  82                 String name = root.name;\r
  83                 String newName = nameMappings.get(name);\r
  84                 graph.addLiteral(this.root, l0.HasName, l0.NameOf, l0.String, newName, Bindings.STRING);\r
  85                 return this.root;\r
  86 \r
  87         }\r
  88         \r
  89         public Resource getRoot() {\r
  90                 return root;\r
  91         }\r
  92         \r
  93         public void attachRoot(WriteGraph graph) throws DatabaseException {\r
  94                 GraphFileResource gf = GraphFileResource.getInstance(graph);\r
  95                 if (graph.isInstanceOf(library, gf.Folder)) {\r
  96                         if (graph.isInstanceOf(root, gf.Folder)) {\r
  97                                 graph.claim(library, gf.HasFolder, root);\r
  98                                 return;\r
  99                         }  else if (graph.isInstanceOf(root, gf.File)) {\r
 100                                 graph.claim(library, gf.HasFile, root);\r
 101                                 return;\r
 102                         }\r
 103                 }\r
 104                 throw new DatabaseException("Unknown type, cannot attach copied resource " + root);\r
 105         }\r
 106 \r
 107 }\r