bundles/org.simantics.db.common/src/org/simantics/db/common/request/MappedTypedPartsAsync.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.db.common.request;
  13
  14 import java.util.HashMap;
  15 import java.util.Map;
  16 import java.util.Set;
  17
  18 import org.simantics.db.AsyncReadGraph;
  19 import org.simantics.db.Resource;
  20 import org.simantics.db.common.ProcedureBarrier;
  21 import org.simantics.db.procedure.AsyncMultiProcedure;
  22 import org.simantics.db.procedure.AsyncProcedure;
  23 import org.simantics.layer0.Layer0;
  24 import org.simantics.operation.Layer0X;
  25
  26 public class MappedTypedPartsAsync extends ResourceAsyncRead2<Map<Resource, Resource>> {
  27
  28     public MappedTypedPartsAsync(Resource realization, Resource type) {
  29         super(realization, type);
  30     }
  31
  32     @Override
  33     public void perform(AsyncReadGraph graph, final AsyncProcedure<Map<Resource, Resource>> procedure) {
  34
  35         final Layer0 L0 = graph.getService(Layer0.class);
  36         final Layer0X L0X = graph.getService(Layer0X.class);
  37         final HashMap<Resource, Resource> result = new HashMap<Resource, Resource>();
  38         final ProcedureBarrier<Map<Resource, Resource>> ready = new ProcedureBarrier<Map<Resource, Resource>>(1);
  39
  40         graph.forEachObject(resource, L0.ConsistsOf, new AsyncMultiProcedure<Resource>() {
  41
  42                         @Override
  43                         public void execute(AsyncReadGraph graph, final Resource object) {
  44
  45                                 ready.incrementAndGet();
  46
  47                                 graph.forTypes(object, new AsyncProcedure<Set<Resource>>() {
  48
  49                                         @Override
  50                                         public void execute(AsyncReadGraph graph, Set<Resource> types) {
  51
  52                                                 if(types.contains(resource2)) {
  53
  54                                                         graph.forEachObject(object, L0X.Represents, new AsyncMultiProcedure<Resource>() {
  55
  56                                                                 @Override
  57                                                                 public void execute(AsyncReadGraph graph, Resource mapped) {
  58
  59                                                                         synchronized(result) {
  60                                                                                 result.put(mapped, object);
  61                                                                         }
  62
  63                                                                 }
  64
  65                                                                 @Override
  66                                                                 public void finished(AsyncReadGraph graph) {
  67
  68                                                                         ready.dec(graph, procedure, result);
  69
  70                                                                 }
  71
  72                                                                 @Override
  73                                                                 public void exception(AsyncReadGraph graph, Throwable throwable) {
  74
  75                                                                         ready.except(throwable);
  76                                                                         ready.dec(graph, procedure, result);
  77
  78                                                                 }
  79
  80                                                         });
  81
  82                                                 } else {
  83
  84                                                         ready.dec(graph, procedure, result);
  85
  86                                                 }
  87
  88                                         }
  89
  90                                         @Override
  91                                         public void exception(AsyncReadGraph graph, Throwable throwable) {
  92
  93                                                 ready.except(throwable);
  94                                                 ready.dec(graph, procedure, result);
  95
  96                                         }
  97
  98                                 });
  99
 100                         }
 101
 102                         @Override
 103                         public void finished(AsyncReadGraph graph) {
 104
 105                                 ready.dec(graph, procedure, result);
 106
 107                         }
 108
 109                         @Override
 110                         public void exception(AsyncReadGraph graph, Throwable throwable) {
 111
 112                                 ready.except(throwable);
 113                                 ready.dec(graph, procedure, result);
 114
 115                         }
 116
 117         });
 118
 119     }
 120
 121 //    @Override
 122 //    public Map<Resource, Resource> perform(ReadGraph graph) throws DatabaseException {
 123 //
 124 //        Builtins b = graph.getBuiltins();
 125 //        Map<Resource, Resource> result = new HashMap<Resource, Resource>();
 126 //
 127 //        for(Resource part : graph.syncRequest(new ObjectsWithType(resource, b.ConsistsOf, resource2))) {
 128 //              Resource represents = graph.getPossibleObject(part, b.Represents);
 129 //              if(represents != null) result.put(represents, part);
 130 //        }
 131 //
 132 //        return result;
 133 //
 134 //    }
 135
 136 }