bundles/org.simantics.modeling/src/org/simantics/modeling/mapping/ElementCopyAdvisor.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2010 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.modeling.mapping;
  13
  14 import java.util.Map;
  15 import java.util.function.BiFunction;
  16
  17 import org.simantics.db.ReadGraph;
  18 import org.simantics.db.Resource;
  19 import org.simantics.db.Statement;
  20 import org.simantics.db.WriteGraph;
  21 import org.simantics.db.common.utils.NameUtils;
  22 import org.simantics.db.common.utils.OrderedSetUtils;
  23 import org.simantics.db.exception.CancelTransactionException;
  24 import org.simantics.db.exception.DatabaseException;
  25 import org.simantics.db.layer0.request.PossibleModel;
  26 import org.simantics.diagram.stubs.DiagramResource;
  27 import org.simantics.diagram.stubs.G2DResource;
  28 import org.simantics.diagram.synchronization.ISynchronizationContext;
  29 import org.simantics.diagram.synchronization.StatementEvaluation;
  30 import org.simantics.diagram.synchronization.graph.BasicResources;
  31 import org.simantics.diagram.synchronization.graph.CopyAdvisorUtil;
  32 import org.simantics.diagram.synchronization.graph.GraphCopyAdvisor;
  33 import org.simantics.diagram.synchronization.graph.GraphSynchronizationHints;
  34 import org.simantics.layer0.Layer0;
  35
  36 import gnu.trove.map.hash.THashMap;
  37
  38 /**
  39  * @author Tuukka Lehtonen
  40  */
  41 public class ElementCopyAdvisor extends GraphCopyAdvisor {
  42
  43     G2DResource G2D;
  44     DiagramResource DIA;
  45
  46     /**
  47      * This is necessary to have DIA.Flag type copied over to the copied flag.
  48      * Diagram mapping will have problems and potentially break the
  49      * configuration if the type is not the same as in the source.
  50      */
  51     BiFunction<ReadGraph, Statement, StatementEvaluation> statementAdvisor =
  52             new BiFunction<ReadGraph, Statement, StatementEvaluation>() {
  53         @Override
  54         public StatementEvaluation apply(ReadGraph graph, Statement stm) {
  55             if (DIA.HasFlagType.equals(stm.getPredicate()))
  56                 return StatementEvaluation.INCLUDE;
  57             if (G2D.HasFontStyle.equals(stm.getPredicate()))
  58                 return StatementEvaluation.INCLUDE;
  59             return StatementEvaluation.USE_DEFAULT;
  60         }
  61     };
  62
  63     @Override
  64     public Evaluation canCopy(ISynchronizationContext context, WriteGraph graph, Resource source, Resource sourcecontainer, Resource targetContainer) throws DatabaseException {
  65         BasicResources br = context.get(GraphSynchronizationHints.BASIC_RESOURCES);
  66         return graph.isInstanceOf(source, br.DIA.Element) ? Evaluation.SUPPORTED : Evaluation.NOT_SUPPORTED;
  67     }
  68
  69     @Override
  70     public Object copy(ISynchronizationContext context, WriteGraph graph, Resource source, Resource sourceContainer, Resource targetContainer) throws DatabaseException {
  71         return copy(context, graph, source, sourceContainer, targetContainer, new THashMap<Object, Object>());
  72     }
  73
  74     @Override
  75     public Object copy(ISynchronizationContext context, WriteGraph graph, Resource source, Resource sourceContainer,
  76             Resource targetContainer, Map<Object, Object> map) throws DatabaseException {
  77         Resource model = graph.syncRequest(new PossibleModel(targetContainer));
  78         //if (model == null)
  79         //    throw new IllegalArgumentException("no model found for copy target container " + NameUtils.getSafeName(graph, targetContainer, true));
  80
  81         Layer0 L0 = Layer0.getInstance(graph);
  82         G2D = G2DResource.getInstance(graph);
  83         DIA = DiagramResource.getInstance(graph);
  84
  85         Resource copy = (model != null) ?
  86                 CopyAdvisorUtil.copy3(graph, source, model, statementAdvisor, map) :
  87                     CopyAdvisorUtil.copy2(graph, source, statementAdvisor, map);
  88
  89         if (graph.hasStatement(sourceContainer, L0.ConsistsOf, source))
  90             graph.claim(targetContainer, L0.ConsistsOf, copy);
  91
  92         return copy;
  93     }
  94
  95     @Override
  96     public Object cut(ISynchronizationContext context, WriteGraph graph, Resource source, Resource sourceContainer,
  97             Resource targetContainer) throws DatabaseException {
  98
  99         Layer0 L0 = Layer0.getInstance(graph);
 100         DiagramResource DIA = DiagramResource.getInstance(graph);
 101
 102         if (sourceContainer.equals(targetContainer))
 103             return null;
 104
 105         // disconnect from source diagram
 106         if (!OrderedSetUtils.remove(graph, sourceContainer, source))
 107             // Unlink failed for some reason.
 108             throw new CancelTransactionException("Failed to unlink element "
 109                     + NameUtils.getSafeName(graph, source) + " from source diagram "
 110                     + NameUtils.getSafeName(graph, sourceContainer));
 111
 112         // connect to target diagram
 113         boolean prepend = graph.isInstanceOf(source, DIA.Connection);
 114         boolean add = true;
 115         if (prepend)
 116             add = OrderedSetUtils.addFirst(graph, targetContainer, source);
 117         else
 118             add = OrderedSetUtils.add(graph, targetContainer, source);
 119         if (!add)
 120             // Link failed for some reason.
 121             throw new CancelTransactionException("Failed to link element "
 122                     + NameUtils.getSafeName(graph, source) + " to target diagram "
 123                     + NameUtils.getSafeName(graph, targetContainer));
 124
 125         // This handles e.g. connections, which are not part of container
 126         if(graph.hasStatement(sourceContainer, L0.ConsistsOf, source)) {
 127             graph.deny(sourceContainer, L0.ConsistsOf, source);
 128             graph.claim(targetContainer, L0.ConsistsOf, source);
 129         }
 130
 131         return source;
 132     }
 133
 134 }