1 /*******************************************************************************
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2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
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3 * in Industry THTH ry.
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4 * All rights reserved. This program and the accompanying materials
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5 * are made available under the terms of the Eclipse Public License v1.0
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6 * which accompanies this distribution, and is available at
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7 * http://www.eclipse.org/legal/epl-v10.html
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10 * VTT Technical Research Centre of Finland - initial API and implementation
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11 *******************************************************************************/
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12 package org.simantics.db.layer0.variable;
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14 import org.simantics.databoard.Bindings;
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15 import org.simantics.databoard.binding.Binding;
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16 import org.simantics.databoard.binding.BooleanBinding;
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17 import org.simantics.databoard.binding.NumberBinding;
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18 import org.simantics.databoard.binding.StringBinding;
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19 import org.simantics.databoard.binding.error.BindingException;
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20 import org.simantics.databoard.binding.mutable.MutableStringBinding;
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21 import org.simantics.databoard.parser.repository.DataTypeSyntaxError;
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22 import org.simantics.databoard.parser.repository.DataValueRepository;
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23 import org.simantics.databoard.primitives.MutableString;
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24 import org.simantics.databoard.type.Datatype;
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25 import org.simantics.databoard.type.DoubleType;
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26 import org.simantics.databoard.type.FloatType;
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27 import org.simantics.databoard.type.IntegerType;
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28 import org.simantics.databoard.type.NumberType;
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29 import org.simantics.databoard.units.IUnitConverter;
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30 import org.simantics.databoard.units.internal.UnitParseException;
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31 import org.simantics.databoard.util.ObjectUtils;
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32 import org.simantics.db.VirtualGraph;
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33 import org.simantics.db.WriteGraph;
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34 import org.simantics.db.common.request.WriteRequest;
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35 import org.simantics.db.exception.DatabaseException;
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36 import org.simantics.db.layer0.util.Layer0Utils;
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37 import org.simantics.db.layer0.util.PrimitiveValueParser;
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39 public class VariableWrite extends WriteRequest {
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41 final private Variable variable;
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42 final private String label;
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43 final private String targetUnit;
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45 public VariableWrite(Variable variable, String label) {
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46 this(variable, label, null, null);
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49 public VariableWrite(Variable variable, String label, VirtualGraph provider, String targetUnit) {
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51 this.variable = variable;
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53 this.targetUnit = targetUnit;
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56 public static IUnitConverter converter(final String unit, final String targetUnit) {
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58 return new IUnitConverter() {
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61 public double convert(double value) {
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63 if(targetUnit == null) return value;
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65 if("K".equals(unit)) {
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66 if("C".equals(targetUnit)) value = value - 273.15;
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67 else if("F".equals(targetUnit)) value = (value - 273.15) * 9.0/5.0 + 32.0;
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68 } else if ("C".equals(unit)) {
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69 if("K".equals(targetUnit)) value = value + 273.15;
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70 } else if ("F".equals(unit)) {
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71 if("K".equals(targetUnit)) value = (value - 32.0) * 5.0/9.0 + 273.15;
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74 value = org.simantics.databoard.Units.convert(value, unit, targetUnit);
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75 } catch (UnitParseException e) {
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76 e.printStackTrace();
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90 public void perform(WriteGraph graph) throws DatabaseException {
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91 graph.markUndoPoint();
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93 //System.err.println("VariableWrite " + variable.getURI(graph) + " => " + label);
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94 Datatype type = variable.getPossibleDatatype(graph);
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98 uri = variable.getURI(graph);
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99 } catch (DatabaseException e) {
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101 throw new org.simantics.db.exception.BindingException("no datatype for variable " + variable + " (URI=" + uri + ")", null);
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104 Binding binding = Bindings.getBinding(type);
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106 String parsedLabel = label;
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107 Object value = null;
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109 if (binding instanceof StringBinding) {
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110 if (binding instanceof MutableStringBinding)
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111 value = new MutableString(label);
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114 } else if (binding instanceof BooleanBinding) {
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115 // This parses a bit more than just "true"/"false".
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117 value = PrimitiveValueParser.parseBoolean(label);
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118 } catch (IllegalArgumentException e) {
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119 throw new DatabaseException(e);
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122 if (binding instanceof NumberBinding) {
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123 parsedLabel = label.replace(",", ".");
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126 value = binding.parseValue(parsedLabel, new DataValueRepository());
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128 // FIXME: this is Balas-specific
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129 if (targetUnit != null) {
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130 if (type instanceof NumberType) {
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131 String unit = Variables.getPossibleUnit(graph, variable);
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132 if (unit != null) {
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133 IUnitConverter converter = converter(targetUnit, unit);
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134 if(type instanceof FloatType) {
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135 float converted = (float)converter.convert(((Number)value).floatValue());
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136 value = binding.parseValue(Float.toString(converted), new DataValueRepository());
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137 } else if(type instanceof DoubleType) {
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138 double converted = converter.convert(((Number)value).doubleValue());
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139 value = binding.parseValue(Double.toString(converted), new DataValueRepository());
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140 } else if(type instanceof IntegerType) {
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141 value = binding.parseValue(Integer.toString(((Number)value).intValue()), new DataValueRepository());
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147 variable.setValue(graph, value, binding);
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149 String[] varParts = variable.getParent(graph).getURI(graph).split("/");
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150 String varName = varParts[varParts.length - 1];
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152 // Add a comment to metadata.
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153 Layer0Utils.addCommentMetadata(graph, "Modified variable " + varName + " to " + ObjectUtils.toString(value));
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155 } catch (DataTypeSyntaxError e) {
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156 throw new DatabaseException(e);
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157 } catch (BindingException e) {
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158 throw new DatabaseException(e);
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