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

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2011 Association for Decentralized Information Management in\r
   3  * Industry THTH ry.\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.modeling.subscription;\r
  13 \r
  14 import java.util.List;\r
  15 \r
  16 import org.simantics.databoard.util.Bean;\r
  17 import org.simantics.db.ReadGraph;\r
  18 import org.simantics.db.Resource;\r
  19 import org.simantics.db.common.request.ResourceRead;\r
  20 import org.simantics.db.exception.DatabaseException;\r
  21 import org.simantics.layer0.Layer0;\r
  22 import org.simantics.modeling.ModelingResources;\r
  23 \r
  24 /**\r
  25  * This query returns all subscriptions and their corersponding names.\r
  26  *  \r
  27  * @author toni.kalajainen\r
  28  */\r
  29 public class SubscriptionsQuery extends ResourceRead<SubscriptionsQuery.SubscriptionsResult> {\r
  30 \r
  31         public static class SubscriptionsResult extends Bean {\r
  32                 \r
  33                 public List<Resource> resources;\r
  34                 public List<String> names;\r
  35                 \r
  36                 public String[] toNames() {\r
  37                         return names.toArray( new String[names.size()] );\r
  38                 }\r
  39                 \r
  40                 public String getName(Resource resource)\r
  41                 {\r
  42                         if (resource==null) return null;\r
  43                         for ( int i=0; i<resources.size(); i++ ) {                              \r
  44                                 if ( resource.equals( resources.get(i) ) ) return names.get(i);\r
  45                         }\r
  46                         return null;\r
  47                 }\r
  48                 \r
  49         }\r
  50 \r
  51         public SubscriptionsQuery(Resource resource) {\r
  52                 super(resource);\r
  53         }\r
  54 \r
  55 \r
  56         @Override\r
  57         public SubscriptionsResult perform(ReadGraph graph) throws DatabaseException {\r
  58                 Layer0 L0 = Layer0.getInstance(graph);\r
  59                 ModelingResources MOD = ModelingResources.getInstance(graph);\r
  60                 \r
  61                 SubscriptionsResult result = new SubscriptionsResult();\r
  62                 result.init();\r
  63                 \r
  64         for (Resource r : graph.getObjects(resource, L0.ConsistsOf)) {\r
  65                 if ( !graph.isInstanceOf(r, MOD.Subscription) ) continue;\r
  66                 String label = graph.getPossibleRelatedValue(r, L0.HasLabel);\r
  67                 result.resources.add( r );\r
  68                 result.names.add( label == null ? "" : label );\r
  69         }\r
  70                 \r
  71                 return result;\r
  72         }\r
  73         \r
  74 }\r