svn-gvsig-desktop / branches / v02_desarrollo / libraries / sld / temp / org.gvsig.sldsupport.lib.api / src / main / java / org / gvsig / sldsupport / filterencoding / operations / DoubleConstant.java @ 40779
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1 | 40779 | jldominguez | /* gvSIG. Sistema de Informaci�n Geogr�fica de la Generalitat Valenciana
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2 | *
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3 | * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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4 | *
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5 | * This program is free software; you can redistribute it and/or
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6 | * modify it under the terms of the GNU General Public License
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7 | * as published by the Free Software Foundation; either version 2
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8 | * of the License, or (at your option) any later version.
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9 | *
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10 | * This program is distributed in the hope that it will be useful,
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11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 | * GNU General Public License for more details.
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14 | *
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15 | * You should have received a copy of the GNU General Public License
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16 | * along with this program; if not, write to the Free Software
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17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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18 | *
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19 | * For more information, contact:
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20 | *
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21 | * Generalitat Valenciana
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22 | * Conselleria d'Infraestructures i Transport
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23 | * Av. Blasco Ib��ez, 50
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24 | * 46010 VALENCIA
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25 | * SPAIN
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26 | *
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27 | * +34 963862235
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28 | * gvsig@gva.es
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29 | * www.gvsig.gva.es
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30 | *
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31 | * or
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32 | *
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33 | * IVER T.I. S.A
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34 | * Salamanca 50
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35 | * 46005 Valencia
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36 | * Spain
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37 | *
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38 | * +34 963163400
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39 | * dac@iver.es
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40 | */
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41 | package org.gvsig.sldsupport.filterencoding.operations; |
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42 | |||
43 | import java.util.ArrayList; |
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44 | import java.util.Hashtable; |
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45 | |||
46 | import org.gvsig.i18n.Messages; |
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47 | /**
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48 | * Implements the funcionality of a double constant
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49 | *
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50 | * @author Pepe Vidal Salvador - jose.vidal.salvador@iver.es
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51 | *
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52 | */
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53 | public class DoubleConstant extends Operator{ |
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54 | private double value; |
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55 | |||
56 | public String getName() { |
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57 | return OperationTags.NUMERIC_VALUE;
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58 | } |
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59 | |||
60 | public DoubleConstant(String value,Hashtable<String, Object> symbol_table) { |
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61 | super(symbol_table);
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62 | this.value=Double.valueOf(value); |
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63 | |||
64 | } |
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65 | |||
66 | public Object evaluate() { |
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67 | return value;
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68 | } |
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69 | |||
70 | |||
71 | public String getDescription() { |
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72 | return Messages.getText("constant"); |
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73 | } |
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74 | |||
75 | public Class getResultType() { |
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76 | return Double.class; |
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77 | } |
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78 | |||
79 | public void addArguments(ArrayList<Expression> expressions) { |
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80 | |||
81 | throw new RuntimeException("Cannot add arguments to a constant"); |
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82 | |||
83 | } |
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84 | |||
85 | public void addArgument(int i, Expression arg) { |
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86 | |||
87 | throw new RuntimeException("Cannot add arguments to a constant"); |
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88 | } |
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89 | |||
90 | |||
91 | public String getPattern() { |
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92 | return null; |
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93 | } |
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94 | |||
95 | public ArrayList<Expression> getArguments() { |
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96 | return null; |
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97 | } |
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98 | |||
99 | public void setArguments(ArrayList<Expression> arguments) { |
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100 | return;
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101 | } |
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102 | |||
103 | |||
104 | public void check() throws ExpressionException { |
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105 | return;
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106 | } |
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107 | |||
108 | |||
109 | public double getValue() { |
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110 | return value;
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111 | } |
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112 | } |