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