bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/diagram/monitor/ResolveMonitorVariable.java

   1 /*******************************************************************************
   2  * Copyright (c) 2012 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.ui.diagram.monitor;
  13
  14 import org.simantics.common.format.Formatter;
  15 import org.simantics.databoard.Bindings;
  16 import org.simantics.datatypes.literal.DecimalFormatFormatter;
  17 import org.simantics.db.ReadGraph;
  18 import org.simantics.db.Resource;
  19 import org.simantics.db.common.request.BinaryRead;
  20 import org.simantics.db.exception.DatabaseException;
  21 import org.simantics.db.exception.VariableException;
  22 import org.simantics.db.layer0.variable.RVI;
  23 import org.simantics.db.layer0.variable.Variable;
  24 import org.simantics.db.layer0.variable.Variables;
  25 import org.simantics.diagram.stubs.DiagramResource;
  26 import org.simantics.operation.Layer0X;
  27
  28 /**
  29  * @author Tuukka Lehtonen
  30  */
  31 public class ResolveMonitorVariable extends BinaryRead<Resource, Resource, MonitorVariable> {
  32
  33     public ResolveMonitorVariable(Resource runtimeDiagram, Resource monitorElement) {
  34         super(runtimeDiagram, monitorElement);
  35     }
  36
  37     @Override
  38     public MonitorVariable perform(ReadGraph graph) throws DatabaseException {
  39         Boolean external = null;
  40         DiagramResource DIA = DiagramResource.getInstance(graph);
  41
  42         Resource monitorComponent = graph.getPossibleObject(parameter2, DIA.HasMonitorComponent);
  43         if (monitorComponent == null)
  44             return null;
  45
  46         String suffix = graph.getPossibleRelatedValue(parameter2, DIA.HasMonitorSuffix, Bindings.STRING);
  47         if (suffix == null)
  48             return null;
  49
  50         String diagramVariable = graph.getPossibleRelatedValue(parameter, DIA.RuntimeDiagram_HasVariable);
  51         if (diagramVariable == null)
  52             return null;
  53
  54         Variable var = Variables.getPossibleVariable(graph, diagramVariable);
  55         if (var == null)
  56             return null;
  57
  58         Variable component = var.browsePossible(graph, monitorComponent);
  59         if (component == null) {
  60             // The monitored component is not in this diagram.
  61             component = Variables.getPossibleVariable(graph, monitorComponent);
  62             if (component == null)
  63                 return null;
  64
  65             String componentRVI = Variables.getPossibleRVI(graph, component);
  66             if (componentRVI == null)
  67                 return null;
  68
  69             Resource realization = Variables.getRealization(graph, var);
  70             String diagramRealizationURI = graph.getPossibleURI(realization);
  71             if (diagramRealizationURI == null)
  72                 return null;
  73
  74             String componentURI = diagramRealizationURI + componentRVI;
  75             var = Variables.getPossibleVariable(graph, componentURI);
  76             if (var == null)
  77                 return null;
  78
  79             external = Boolean.TRUE;
  80         } else {
  81             var = component;
  82         }
  83
  84         var = var.browsePossible(graph, suffix);
  85         if (var == null)
  86             return null;
  87
  88         Formatter formatter = graph.getPossibleRelatedAdapter(parameter2, DIA.HasFormatter, Formatter.class);
  89         if (formatter == null)
  90             formatter = new DecimalFormatFormatter();
  91
  92         Layer0X L0X = Layer0X.getInstance(graph);
  93         String _expression = graph.getPossibleRelatedAdapter(parameter2, L0X.HasExpression, String.class);
  94         if(_expression == null) _expression  = "value"; //$NON-NLS-1$
  95
  96         RVI rvi = null;
  97         try {
  98             rvi = Variables.getRVI2(graph, var);
  99         } catch (VariableException e) {
 100             // No RVI, which is fine for contents that do not originate from the model configuration.
 101         }
 102
 103         return new MonitorVariable(monitorComponent, formatter, _expression, var, rvi, external);
 104     }
 105
 106 }