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

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