bundles/org.simantics.db.common/src/org/simantics/db/common/request/PossibleTypedParent.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 org.simantics.db.AsyncReadGraph;
  15 import org.simantics.db.ReadGraph;
  16 import org.simantics.db.Resource;
  17 import org.simantics.db.exception.DatabaseException;
  18 import org.simantics.db.procedure.AsyncProcedure;
  19 import org.simantics.layer0.Layer0;
  20
  21 public class PossibleTypedParent extends ResourceRead2<Resource> {
  22
  23         public PossibleTypedParent(Resource resource, Resource type) {
  24                 super(resource, type);
  25         }
  26
  27
  28         @Override
  29         public Resource perform(ReadGraph graph) throws DatabaseException {
  30                 if(graph.isInstanceOf(resource, resource2)) {
  31                         return resource;
  32                 } else {
  33                         Layer0 L0 = Layer0.getInstance(graph);
  34                         Resource possibleParent = graph.getPossibleObject(resource, L0.PartOf);
  35                         if(possibleParent != null) {
  36                                 return graph.syncRequest(new PossibleTypedParent(possibleParent, resource2));
  37                         } else {
  38                                 return null;
  39                         }
  40                 }
  41         }
  42
  43 //      @Override
  44 //      public void perform(AsyncReadGraph graph, final AsyncProcedure<Resource> procedure) {
  45 //
  46 //          final Layer0 l0 = graph.getService(Layer0.class);
  47 //
  48 //              graph.forIsInstanceOf(resource, resource2, new AsyncProcedure<Boolean>() {
  49 //
  50 //                      @Override
  51 //                      public void execute(AsyncReadGraph graph, Boolean isInstance) {
  52 //                              if(isInstance) {
  53 //                                      procedure.execute(graph, resource);
  54 //                              } else {
  55 //
  56 //                                      graph.forPossibleObject(resource, l0.PartOf, new AsyncProcedure<Resource>() {
  57 //
  58 //                                              @Override
  59 //                                              public void execute(AsyncReadGraph graph, final Resource parent) {
  60 //
  61 //                                                      if(parent == null) {
  62 //                                                              procedure.execute(graph, null);
  63 //                                                      } else {
  64 //                                                              graph.asyncRequest(new PossibleTypedParent(parent, resource2), procedure);
  65 //                                                      }
  66 //
  67 //                                              }
  68 //
  69 //                                              @Override
  70 //                                              public void exception(AsyncReadGraph graph, Throwable throwable) {
  71 //                                                      procedure.exception(graph, throwable);
  72 //                                              }
  73 //
  74 //                                      });
  75 //
  76 //                              }
  77 //                      }
  78 //
  79 //                      @Override
  80 //                      public void exception(AsyncReadGraph graph, Throwable throwable) {
  81 //                              procedure.exception(graph, throwable);
  82 //                      }
  83 //              });
  84 //
  85 //
  86 //      }
  87
  88 }