bundles/org.simantics.modeling/src/org/simantics/modeling/subscription/SubscriptionItemQuery.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.UUID;\r
  15 \r
  16 import org.simantics.databoard.Bindings;\r
  17 import org.simantics.databoard.Databoard;\r
  18 import org.simantics.databoard.binding.Binding;\r
  19 import org.simantics.db.ReadGraph;\r
  20 import org.simantics.db.Resource;\r
  21 import org.simantics.db.common.request.PossibleTypedParent;\r
  22 import org.simantics.db.common.request.ResourceRead;\r
  23 import org.simantics.db.exception.DatabaseException;\r
  24 import org.simantics.db.layer0.request.PossibleActiveExperiment;\r
  25 import org.simantics.db.layer0.variable.RVI;\r
  26 import org.simantics.db.layer0.variable.Variable;\r
  27 import org.simantics.db.layer0.variable.Variables;\r
  28 import org.simantics.layer0.Layer0;\r
  29 import org.simantics.modeling.ModelingResources;\r
  30 \r
  31 /**\r
  32  * This query returns SubscriptionItem description\r
  33  * \r
  34  * @author Antti Villberg\r
  35  */\r
  36 public class SubscriptionItemQuery extends ResourceRead<SubscriptionItem> {\r
  37 \r
  38         public SubscriptionItemQuery(Resource resource) {\r
  39                 super(resource);\r
  40         }\r
  41 \r
  42         @SuppressWarnings("unused")\r
  43         @Override\r
  44         public SubscriptionItem perform(ReadGraph graph) throws DatabaseException {\r
  45                 \r
  46         ModelingResources MOD = ModelingResources.getInstance(graph);\r
  47         Layer0 L0 = Layer0.getInstance(graph);\r
  48 \r
  49         SubscriptionItem item = new SubscriptionItem();\r
  50         \r
  51         item.variableId = "";\r
  52         item.groupItemId = "";\r
  53         Resource subscriptionItem = resource;\r
  54         Resource subscription = null;\r
  55         if (subscriptionItem!=null) {\r
  56                 item.simpleLabel = graph.getPossibleRelatedValue(subscriptionItem, L0.HasLabel, Bindings.STRING);\r
  57             subscription = graph.syncRequest( new PossibleTypedParent(subscriptionItem, MOD.Subscription) );            \r
  58         }\r
  59         if (item.simpleLabel==null) item.simpleLabel = "";\r
  60         if (subscriptionItem != null) \r
  61                 SubscriptionItem: { \r
  62                 \r
  63                         label2: {\r
  64                                 item.groupItemId = graph.getPossibleRelatedValue(subscriptionItem, L0.HasName, Bindings.STRING);\r
  65                                 if (item.groupItemId == null) break SubscriptionItem;\r
  66 \r
  67                                 Binding rviBinding = graph.getService(Databoard.class).getBindingUnchecked( RVI.class );\r
  68                             RVI rvi = graph.getPossibleRelatedValue(subscriptionItem, MOD.Subscription_Item_VariableId, rviBinding);\r
  69                             if (rvi == null) break SubscriptionItem;        \r
  70                             //variablePersistentId = rvi.toString();\r
  71                             \r
  72                                         Variable configuration = Variables.getPossibleConfigurationContext(graph, subscription);\r
  73                                         if (configuration == null) break SubscriptionItem;\r
  74                                         \r
  75                                         Resource activeExperiment = graph.syncRequest(new PossibleActiveExperiment(subscription));\r
  76                                         if (activeExperiment != null) {\r
  77                                                 Variable experimentVariable = null;\r
  78                                                 try {\r
  79                                                         experimentVariable = Variables.switchRealization(graph, configuration, activeExperiment);\r
  80                                                 } catch (DatabaseException e) {\r
  81                                                         experimentVariable = Variables.switchPossibleContext(graph, configuration, activeExperiment);\r
  82                                                 }\r
  83                                                 if (experimentVariable != null) {\r
  84                                                         configuration = experimentVariable;\r
  85                                                 }\r
  86                                         }\r
  87 \r
  88                                         item.variableId = item.variableReference = rvi.toPossibleString(graph, configuration);\r
  89                             if (item.variableId == null) break SubscriptionItem;\r
  90 \r
  91                             if (item.simpleLabel.isEmpty()) {\r
  92                                 item.simpleLabel = SubscriptionItemLabel.removeVariablePrefixPath( item.variableId );\r
  93                             }\r
  94                         }\r
  95                         \r
  96                         subscription: {\r
  97                             if (subscription!=null) {\r
  98                                 item.groupId = graph.getPossibleRelatedValue(subscription, L0.HasName, Bindings.STRING);\r
  99                             } else {\r
 100                                 item.groupId = UUID.randomUUID().toString();\r
 101                             }\r
 102                         }\r
 103                         \r
 104                         unit: {\r
 105                             item.unit = graph.getPossibleRelatedValue(subscriptionItem, MOD.Subscription_Item_Unit, Bindings.STRING);\r
 106                         }\r
 107                         \r
 108         } \r
 109         \r
 110         if (item.groupItemId==null) item.groupItemId = "";\r
 111         if (item.variableId==null) item.variableId = "";\r
 112         if (item.groupId==null) item.groupId = "";\r
 113         if (item.unit==null) item.unit = "";\r
 114         \r
 115         return item;\r
 116         }\r
 117 \r
 118 }\r