bundles/org.simantics.modeling/src/org/simantics/modeling/subscription/SubscriptionsQuery.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2011 Association for Decentralized Information Management in
   3  * 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.subscription;
  13
  14 import java.util.List;
  15
  16 import org.simantics.databoard.util.Bean;
  17 import org.simantics.db.ReadGraph;
  18 import org.simantics.db.Resource;
  19 import org.simantics.db.common.request.ResourceRead;
  20 import org.simantics.db.exception.DatabaseException;
  21 import org.simantics.layer0.Layer0;
  22 import org.simantics.modeling.ModelingResources;
  23
  24 /**
  25  * This query returns all subscriptions and their corersponding names.
  26  *
  27  * @author toni.kalajainen
  28  */
  29 public class SubscriptionsQuery extends ResourceRead<SubscriptionsQuery.SubscriptionsResult> {
  30
  31         public static class SubscriptionsResult extends Bean {
  32
  33                 public List<Resource> resources;
  34                 public List<String> names;
  35
  36                 public String[] toNames() {
  37                         return names.toArray( new String[names.size()] );
  38                 }
  39
  40                 public String getName(Resource resource)
  41                 {
  42                         if (resource==null) return null;
  43                         for ( int i=0; i<resources.size(); i++ ) {
  44                                 if ( resource.equals( resources.get(i) ) ) return names.get(i);
  45                         }
  46                         return null;
  47                 }
  48
  49         }
  50
  51         public SubscriptionsQuery(Resource resource) {
  52                 super(resource);
  53         }
  54
  55
  56         @Override
  57         public SubscriptionsResult perform(ReadGraph graph) throws DatabaseException {
  58                 Layer0 L0 = Layer0.getInstance(graph);
  59                 ModelingResources MOD = ModelingResources.getInstance(graph);
  60
  61                 SubscriptionsResult result = new SubscriptionsResult();
  62                 result.init();
  63
  64         for (Resource r : graph.getObjects(resource, L0.ConsistsOf)) {
  65                 if ( !graph.isInstanceOf(r, MOD.Subscription) ) continue;
  66                 String label = graph.getPossibleRelatedValue(r, L0.HasLabel);
  67                 result.resources.add( r );
  68                 result.names.add( label == null ? "" : label );
  69         }
  70
  71                 return result;
  72         }
  73
  74 }