bundles/org.simantics.diagram/src/org/simantics/diagram/adapter/TypeGroup.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2018 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.diagram.adapter;
  13
  14 import java.util.Arrays;
  15 import java.util.Collection;
  16 import java.util.Collections;
  17 import java.util.HashSet;
  18 import java.util.Set;
  19
  20 import org.simantics.databoard.Bindings;
  21 import org.simantics.db.ReadGraph;
  22 import org.simantics.db.RequestProcessor;
  23 import org.simantics.db.Resource;
  24 import org.simantics.db.common.primitiverequest.OrderedSet;
  25 import org.simantics.db.common.procedure.wrapper.SetListenerToSingleSetListener;
  26 import org.simantics.db.common.request.BinaryRead;
  27 import org.simantics.db.exception.DatabaseException;
  28 import org.simantics.db.procedure.SetListener;
  29 import org.simantics.diagram.stubs.DiagramResource;
  30 import org.simantics.layer0.Layer0;
  31 import org.simantics.scenegraph.profile.Group;
  32 import org.slf4j.Logger;
  33 import org.slf4j.LoggerFactory;
  34
  35 /**
  36  * @author Tuukka Lehtonen
  37  */
  38 public class TypeGroup implements Group {
  39
  40     private static final Logger LOGGER = LoggerFactory.getLogger(TypeGroup.class);
  41
  42     private final Collection<Resource> types;
  43     private final String               name;
  44
  45     public TypeGroup(String name, Resource type) {
  46         this(name, new Resource[] { type });
  47     }
  48
  49     public TypeGroup(String name, Resource... types) {
  50         this.types = Arrays.asList(types);
  51         this.name = name;
  52     }
  53
  54     @Override
  55     public int hashCode() {
  56         final int prime = 31;
  57         int result = 1;
  58         result = prime * result + types.hashCode();
  59         return result;
  60     }
  61
  62     @Override
  63     public boolean equals(Object obj) {
  64         if (this == obj)
  65             return true;
  66         if (obj == null)
  67             return false;
  68         if (getClass() != obj.getClass())
  69             return false;
  70         TypeGroup other = (TypeGroup) obj;
  71         return types.equals(other.types);
  72     }
  73
  74     /**
  75      * Initialize TypeGroup from a DIAGRAM.Group instance.
  76      *
  77      * @param graph
  78      * @param group
  79      * @throws DatabaseException
  80      */
  81     public TypeGroup(ReadGraph graph, final Resource group) throws DatabaseException {
  82         Layer0 L0 = Layer0.getInstance(graph);
  83         DiagramResource DIA = DiagramResource.getInstance(graph);
  84
  85         this.name = graph.getPossibleRelatedValue(group, L0.HasName, Bindings.STRING);
  86         this.types = graph.getObjects(group, DIA.TypeGroup_HasType);
  87     }
  88
  89     @Override
  90     public void trackItems(RequestProcessor processor, final Resource runtimeDiagram, final SetListener<Resource> listener) throws DatabaseException {
  91         if (types.isEmpty()) {
  92             System.out.println("TypeGroup has no types!");
  93             return;
  94         }
  95
  96         processor.syncRequest(new BinaryRead<Resource, Collection<Resource>, Collection<Resource>>(runtimeDiagram, types) {
  97
  98             @Override
  99             public Set<Resource> perform(ReadGraph graph) throws DatabaseException {
 100                 HashSet<Resource> result = new HashSet<Resource>();
 101
 102                 Resource realDiagram = graph.getPossibleObject(runtimeDiagram, DiagramResource.getInstance(graph).RuntimeDiagram_HasConfiguration);
 103                 if (realDiagram == null)
 104                     return result;
 105
 106 //                System.out.println("looking for diagram elements of type:");
 107 //                for (Resource t : types)
 108 //                    System.out.println("\t" + NameUtils.getSafeName(graph, t, true));
 109
 110                 if (graph.hasStatement(realDiagram)) {
 111                     Collection<Resource> elements = graph.syncRequest(new OrderedSet(realDiagram));
 112                     for (Resource element : elements) {
 113     //                    System.out.println("checking element " + NameUtils.getSafeName(graph, element, true));
 114                         Collection<Resource> elementTypes = graph.getTypes(element);
 115                         if (!Collections.disjoint(types, elementTypes))
 116                             result.add(element);
 117                     }
 118                 } else {
 119                     LOGGER.warn("Most likely after deleting a diagram or something therefore no ordered set can be found for {}", realDiagram);
 120                 }
 121                 return result;
 122             }
 123
 124         }, new SetListenerToSingleSetListener<Resource>(listener));
 125     }
 126
 127     @Override
 128     public String toString() {
 129         return "every '" + name + "'";
 130     }
 131
 132 }