bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/variable/VariableWriteImplied.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.db.layer0.variable;\r
  13 \r
  14 import org.simantics.databoard.Bindings;\r
  15 import org.simantics.databoard.binding.Binding;\r
  16 import org.simantics.databoard.binding.BooleanBinding;\r
  17 import org.simantics.databoard.binding.NumberBinding;\r
  18 import org.simantics.databoard.binding.StringBinding;\r
  19 import org.simantics.databoard.binding.error.BindingException;\r
  20 import org.simantics.databoard.binding.mutable.MutableStringBinding;\r
  21 import org.simantics.databoard.parser.repository.DataTypeSyntaxError;\r
  22 import org.simantics.databoard.parser.repository.DataValueRepository;\r
  23 import org.simantics.databoard.primitives.MutableString;\r
  24 import org.simantics.databoard.type.Datatype;\r
  25 import org.simantics.databoard.type.DoubleType;\r
  26 import org.simantics.databoard.type.FloatType;\r
  27 import org.simantics.databoard.type.IntegerType;\r
  28 import org.simantics.databoard.type.NumberType;\r
  29 import org.simantics.databoard.units.IUnitConverter;\r
  30 import org.simantics.databoard.units.internal.UnitParseException;\r
  31 import org.simantics.databoard.util.ObjectUtils;\r
  32 import org.simantics.db.VirtualGraph;\r
  33 import org.simantics.db.WriteGraph;\r
  34 import org.simantics.db.common.CommentMetadata;\r
  35 import org.simantics.db.common.request.WriteRequest;\r
  36 import org.simantics.db.exception.DatabaseException;\r
  37 import org.simantics.db.layer0.util.PrimitiveValueParser;\r
  38 \r
  39 public class VariableWriteImplied extends WriteRequest {\r
  40 \r
  41     final private Variable variable;\r
  42     final private String label;\r
  43     final private String targetUnit;\r
  44 \r
  45     public VariableWriteImplied(Variable variable, String label) {\r
  46         this(variable, label, null, null);\r
  47     }\r
  48 \r
  49     public VariableWriteImplied(Variable variable, String label, VirtualGraph provider, String targetUnit) {\r
  50         super(provider);\r
  51         this.variable = variable;\r
  52         this.label = label;\r
  53         this.targetUnit = targetUnit;\r
  54     }\r
  55 \r
  56     public static IUnitConverter converter(final String unit, final String targetUnit) {\r
  57 \r
  58         return new IUnitConverter() {\r
  59 \r
  60             @Override\r
  61             public double convert(double value) {\r
  62 \r
  63                 if(targetUnit == null) return value;\r
  64 \r
  65                 if("K".equals(unit)) {\r
  66                     if("C".equals(targetUnit)) value = value - 273.15;\r
  67                     else if("F".equals(targetUnit)) value = (value - 273.15) * 9.0/5.0 + 32.0;\r
  68                 } else if ("C".equals(unit)) {\r
  69                     if("K".equals(targetUnit)) value = value + 273.15;\r
  70                 } else if ("F".equals(unit)) {\r
  71                     if("K".equals(targetUnit)) value = (value - 32.0) * 5.0/9.0 + 273.15;\r
  72                 } else {\r
  73                     try {\r
  74                         value = org.simantics.databoard.Units.convert(value, unit, targetUnit);\r
  75                     } catch (UnitParseException e) {\r
  76                         e.printStackTrace();\r
  77                     }\r
  78                 }\r
  79 \r
  80                 return value;\r
  81 \r
  82             }\r
  83 \r
  84         };\r
  85 \r
  86 \r
  87     }\r
  88     \r
  89     @Override\r
  90     public void perform(WriteGraph graph) throws DatabaseException {\r
  91 \r
  92         try {\r
  93             //System.err.println("VariableWriteImplied " + variable.getURI(graph) + " => " + label);\r
  94             Datatype type = variable.getPossibleDatatype(graph);\r
  95             if (type == null) {\r
  96                 String uri = null;\r
  97                 try {\r
  98                     uri = variable.getURI(graph);\r
  99                 } catch (DatabaseException e) {\r
 100                 }\r
 101                 throw new org.simantics.db.exception.BindingException("no datatype for variable " + variable + " (URI=" + uri + ")", null);\r
 102             }\r
 103 \r
 104             Binding binding = Bindings.getBinding(type);\r
 105 \r
 106             String parsedLabel = label;\r
 107             Object value = null;\r
 108 \r
 109             if (binding instanceof StringBinding) {\r
 110                 if (binding instanceof MutableStringBinding)\r
 111                     value = new MutableString(label);\r
 112                 else\r
 113                     value = label;\r
 114             } else if (binding instanceof BooleanBinding) {\r
 115                 // This parses a bit more than just "true"/"false".\r
 116                 try {\r
 117                     value = PrimitiveValueParser.parseBoolean(label);\r
 118                 } catch (IllegalArgumentException e) {\r
 119                     throw new DatabaseException(e);\r
 120                 }\r
 121             } else {\r
 122                 if (binding instanceof NumberBinding) {\r
 123                     parsedLabel = label.replace(",", ".");\r
 124                 }\r
 125 \r
 126                 //System.out.println("VariableWrite " + parsedLabel);\r
 127                 value = binding.parseValue(parsedLabel, new DataValueRepository());\r
 128                 //System.out.println("VariableWrite value " + value);\r
 129 \r
 130                 // FIXME: this is Balas-specific\r
 131                 if (targetUnit != null) {\r
 132                     if (type instanceof NumberType) {\r
 133                         String unit = Variables.getPossibleUnit(graph, variable);\r
 134                         if (unit != null) {\r
 135                             IUnitConverter converter = converter(targetUnit, unit);\r
 136                             if(type instanceof FloatType) {\r
 137                                 float converted = (float)converter.convert(((Number)value).floatValue());\r
 138                                 value = binding.parseValue(Float.toString(converted), new DataValueRepository());\r
 139                             } else if(type instanceof DoubleType) {\r
 140                                 double converted = converter.convert(((Number)value).doubleValue());\r
 141                                 value = binding.parseValue(Double.toString(converted), new DataValueRepository());\r
 142                             } else if(type instanceof IntegerType) {\r
 143                                 value = binding.parseValue(Integer.toString(((Number)value).intValue()), new DataValueRepository());\r
 144                             }\r
 145                         }\r
 146                     }\r
 147                 }\r
 148             }\r
 149 \r
 150             //System.out.println("VariableWriteImplied " + ObjectUtils.toString(value));\r
 151             variable.setValue(graph, value, binding);\r
 152 \r
 153             // Add a comment to metadata.\r
 154             CommentMetadata cm = graph.getMetadata(CommentMetadata.class);\r
 155             graph.addMetadata(cm.add("Set value " + ObjectUtils.toString(value)));\r
 156 \r
 157         } catch (DataTypeSyntaxError e) {\r
 158             throw new DatabaseException(e);\r
 159         } catch (BindingException e) {\r
 160             throw new DatabaseException(e);\r
 161         }\r
 162 \r
 163     }\r
 164 \r
 165 }\r