bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/variable/VariableWrite2.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management
   3  * in 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.db.layer0.variable;
  13
  14 import org.simantics.databoard.Bindings;
  15 import org.simantics.databoard.binding.Binding;
  16 import org.simantics.databoard.binding.BooleanBinding;
  17 import org.simantics.databoard.binding.NumberBinding;
  18 import org.simantics.databoard.binding.StringBinding;
  19 import org.simantics.databoard.binding.error.BindingException;
  20 import org.simantics.databoard.binding.mutable.MutableStringBinding;
  21 import org.simantics.databoard.parser.repository.DataTypeSyntaxError;
  22 import org.simantics.databoard.parser.repository.DataValueRepository;
  23 import org.simantics.databoard.primitives.MutableString;
  24 import org.simantics.databoard.type.Datatype;
  25 import org.simantics.databoard.type.DoubleType;
  26 import org.simantics.databoard.type.FloatType;
  27 import org.simantics.databoard.type.IntegerType;
  28 import org.simantics.databoard.type.NumberType;
  29 import org.simantics.databoard.units.IUnitConverter;
  30 import org.simantics.databoard.units.internal.UnitParseException;
  31 import org.simantics.databoard.util.ObjectUtils;
  32 import org.simantics.db.VirtualGraph;
  33 import org.simantics.db.WriteGraph;
  34 import org.simantics.db.common.request.WriteRequest;
  35 import org.simantics.db.exception.DatabaseException;
  36 import org.simantics.db.layer0.util.Layer0Utils;
  37 import org.simantics.db.layer0.util.PrimitiveValueParser;
  38
  39 /**
  40  * @deprecated exactly the same as {@link VariableWrite}, should be removed. Not
  41  *             used in the platform at least.
  42  */
  43 public class VariableWrite2 extends WriteRequest {
  44
  45     final private Variable variable;
  46     final private String label;
  47     final private String targetUnit;
  48
  49     public VariableWrite2(Variable variable, String label) {
  50         this(variable, label, null, null);
  51     }
  52
  53     public VariableWrite2(Variable variable, String label, VirtualGraph provider, String targetUnit) {
  54         super(provider);
  55         this.variable = variable;
  56         this.label = label;
  57         this.targetUnit = targetUnit;
  58     }
  59
  60     public static IUnitConverter converter(final String unit, final String targetUnit) {
  61
  62         return new IUnitConverter() {
  63
  64             @Override
  65             public double convert(double value) {
  66
  67                 if(targetUnit == null) return value;
  68
  69                 if("K".equals(unit)) {
  70                     if("C".equals(targetUnit)) value = value - 273.15;
  71                     else if("F".equals(targetUnit)) value = (value - 273.15) * 9.0/5.0 + 32.0;
  72                 } else if ("C".equals(unit)) {
  73                     if("K".equals(targetUnit)) value = value + 273.15;
  74                 } else if ("F".equals(unit)) {
  75                     if("K".equals(targetUnit)) value = (value - 32.0) * 5.0/9.0 + 273.15;
  76                 } else {
  77                     try {
  78                         value = org.simantics.databoard.Units.convert(value, unit, targetUnit);
  79                     } catch (UnitParseException e) {
  80                         e.printStackTrace();
  81                     }
  82                 }
  83
  84                 return value;
  85
  86             }
  87
  88         };
  89
  90
  91     }
  92
  93     @Override
  94     public void perform(WriteGraph graph) throws DatabaseException {
  95         graph.markUndoPoint();
  96         try {
  97             //System.err.println("VariableWrite " + variable.getURI(graph) + " => " + label);
  98             Datatype type = variable.getPossibleDatatype(graph);
  99             if (type == null) {
 100                 String uri = null;
 101                 try {
 102                     uri = variable.getURI(graph);
 103                 } catch (DatabaseException e) {
 104                 }
 105                 throw new org.simantics.db.exception.BindingException("no datatype for variable " + variable + " (URI=" + uri + ")", null);
 106             }
 107
 108             Binding binding = Bindings.getBinding(type);
 109
 110             String parsedLabel = label;
 111             Object value = null;
 112
 113             if (binding instanceof StringBinding) {
 114                 if (binding instanceof MutableStringBinding)
 115                     value = new MutableString(label);
 116                 else
 117                     value = label;
 118             } else if (binding instanceof BooleanBinding) {
 119                 // This parses a bit more than just "true"/"false".
 120                 try {
 121                     value = PrimitiveValueParser.parseBoolean(label);
 122                 } catch (IllegalArgumentException e) {
 123                     throw new DatabaseException(e);
 124                 }
 125             } else {
 126                 if (binding instanceof NumberBinding) {
 127                     parsedLabel = label.replace(",", ".");
 128                 }
 129
 130                 value = binding.parseValue(parsedLabel, new DataValueRepository());
 131
 132                 // FIXME: this is Balas-specific
 133                 if (targetUnit != null) {
 134                     if (type instanceof NumberType) {
 135                         String unit = Variables.getPossibleUnit(graph, variable);
 136                         if (unit != null) {
 137                             IUnitConverter converter = converter(targetUnit, unit);
 138                             if(type instanceof FloatType) {
 139                                 float converted = (float)converter.convert(((Number)value).floatValue());
 140                                 value = binding.parseValue(Float.toString(converted), new DataValueRepository());
 141                             } else if(type instanceof DoubleType) {
 142                                 double converted = converter.convert(((Number)value).doubleValue());
 143                                 value = binding.parseValue(Double.toString(converted), new DataValueRepository());
 144                             } else if(type instanceof IntegerType) {
 145                                 value = binding.parseValue(Integer.toString(((Number)value).intValue()), new DataValueRepository());
 146                             }
 147                         }
 148                     }
 149                 }
 150             }
 151
 152             //System.out.println("VariableWrite " + ObjectUtils.toString(value));
 153             variable.setValue(graph, value, binding);
 154
 155             String[] varParts = variable.getParent(graph).getURI(graph).split("/");
 156             String varName = varParts[varParts.length - 1];
 157
 158             // Add a comment to metadata.
 159             Layer0Utils.addCommentMetadata(graph, "Modified variable " + varName + " to " + ObjectUtils.toString(value));
 160         } catch (DataTypeSyntaxError e) {
 161             throw new DatabaseException(e);
 162         } catch (BindingException e) {
 163             throw new DatabaseException(e);
 164         }
 165
 166     }
 167
 168 }