bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/TypeIndexViewpointFactory.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
   3  * in 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.browsing.ui.graph.impl;\r
  13 \r
  14 import java.util.ArrayList;\r
  15 import java.util.Collection;\r
  16 import java.util.HashMap;\r
  17 import java.util.Map;\r
  18 import java.util.function.Consumer;\r
  19 \r
  20 import org.simantics.browsing.ui.BuiltinKeys;\r
  21 import org.simantics.browsing.ui.BuiltinKeys.ViewpointKey;\r
  22 import org.simantics.browsing.ui.DataSource;\r
  23 import org.simantics.browsing.ui.NodeContext;\r
  24 import org.simantics.browsing.ui.PrimitiveQueryUpdater;\r
  25 import org.simantics.browsing.ui.common.NodeContextBuilder;\r
  26 import org.simantics.browsing.ui.common.viewpoints.LazyContainerViewpoint;\r
  27 import org.simantics.browsing.ui.content.Viewpoint;\r
  28 import org.simantics.browsing.ui.content.ViewpointFactory;\r
  29 import org.simantics.db.ReadGraph;\r
  30 import org.simantics.db.Resource;\r
  31 import org.simantics.db.exception.DatabaseException;\r
  32 import org.simantics.layer0.Layer0;\r
  33 \r
  34 public class TypeIndexViewpointFactory implements ViewpointFactory {\r
  35 \r
  36     @Override\r
  37     public Viewpoint create(final PrimitiveQueryUpdater provider, final NodeContext context, final ViewpointKey key) {\r
  38         assert(provider != null);\r
  39         assert(context != null);\r
  40         \r
  41         final LazyContainerViewpoint result = new LazyContainerViewpoint();\r
  42         \r
  43         DataSource<ReadGraph> source = provider.getDataSource(ReadGraph.class);\r
  44         if (source == null)\r
  45             return result;\r
  46         \r
  47         final Resource inputResource = (Resource) context.getConstant(BuiltinKeys.INPUT);\r
  48         assert(inputResource != null);\r
  49         \r
  50         source.schedule(new Consumer<ReadGraph>() {\r
  51 \r
  52             @Override\r
  53             public void accept(ReadGraph source) {\r
  54 \r
  55                 try {\r
  56                 \r
  57                         HashMap<Resource, Collection<Resource>> index = new HashMap<Resource, Collection<Resource>>(); \r
  58                         \r
  59                         Layer0 L0 = Layer0.getInstance(source);\r
  60                         for(Resource child : source.getObjects(inputResource, L0.ConsistsOf)) {\r
  61                             \r
  62                             for(Resource type : source.getObjects(child, L0.InstanceOf)) {\r
  63                                 Collection<Resource> coll = index.get(type);\r
  64                                 if(coll == null) {\r
  65                                     coll = new ArrayList<Resource>();\r
  66                                     index.put(type, coll);\r
  67                                 }\r
  68                                 coll.add(child);\r
  69                             }\r
  70                             \r
  71                         }\r
  72         \r
  73                         NodeContext[] resultContexts = new NodeContext[index.size()];\r
  74                         int index2 = 0;\r
  75                         for(Map.Entry<Resource, Collection<Resource>> e : index.entrySet()) {\r
  76                             Resource type = e.getKey();\r
  77                             String rep = source.adapt(type, String.class);\r
  78                             resultContexts[index2++] = NodeContextBuilder.buildWithInput(new TypeIndex(type, e.getValue(), rep));\r
  79                         }\r
  80                         result.setChildren(provider, resultContexts);\r
  81                         result.setHasChildren(resultContexts.length > 0);\r
  82         \r
  83                         provider.scheduleReplace(context, key, result);\r
  84 \r
  85                 } catch (DatabaseException e) {\r
  86                         e.printStackTrace();\r
  87                 }\r
  88                         \r
  89             }\r
  90             \r
  91         });\r
  92         \r
  93         return result;\r
  94     }\r
  95     \r
  96     @Override\r
  97     public String toString() {\r
  98         return "Structure by types";\r
  99     }\r
 100     \r
 101 }\r