svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.impl / src / main / java / org / gvsig / fmap / dal / impl / expressionevaluator / DefaultFeatureSymbolTable.java @ 43987
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1 | 43983 | jjdelcerro | package org.gvsig.fmap.dal.impl.expressionevaluator; |
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2 | |||
3 | import org.apache.commons.lang3.Range; |
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4 | import org.gvsig.expressionevaluator.ExpressionEvaluatorLocator; |
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5 | import org.gvsig.expressionevaluator.ExpressionEvaluatorManager; |
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6 | import org.gvsig.expressionevaluator.Function; |
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7 | import org.gvsig.expressionevaluator.Interpreter; |
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8 | import org.gvsig.expressionevaluator.spi.AbstractFunction; |
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9 | import org.gvsig.expressionevaluator.spi.AbstractSymbolTable; |
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10 | 43987 | jjdelcerro | import org.gvsig.fmap.dal.DataManager; |
11 | 43983 | jjdelcerro | import org.gvsig.fmap.dal.expressionevaluator.FeatureSymbolTable; |
12 | import org.gvsig.fmap.dal.feature.Feature; |
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13 | import org.gvsig.fmap.dal.feature.FeatureSelection; |
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14 | import org.gvsig.fmap.dal.feature.FeatureStore; |
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15 | import org.gvsig.fmap.dal.feature.FeatureType; |
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16 | 43984 | jjdelcerro | import org.gvsig.tools.script.Script; |
17 | import org.gvsig.tools.util.UnmodifiableBasicList; |
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18 | 43983 | jjdelcerro | |
19 | /**
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20 | *
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21 | * @author jjdelcerro
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22 | */
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23 | public class DefaultFeatureSymbolTable extends AbstractSymbolTable implements FeatureSymbolTable { |
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24 | |||
25 | private class FeatureFunction extends AbstractFunction { |
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26 | |||
27 | public FeatureFunction() {
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28 | super(
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29 | "Data access",
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30 | "feature",
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31 | Range.is(0),
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32 | "Access to the current feature object when used in a filter.\n"
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33 | + "Return null if used outer a filter.",
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34 | "feature()",
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35 | null,
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36 | "Feature"
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37 | ); |
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38 | } |
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39 | |||
40 | @Override
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41 | public Object call(Interpreter interpreter, Object[] args) throws Exception { |
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42 | return feature;
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43 | } |
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44 | |||
45 | } |
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46 | |||
47 | public class FeatureStoreFunction extends AbstractFunction { |
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48 | |||
49 | public FeatureStoreFunction() {
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50 | super(
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51 | "Data access",
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52 | "store",
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53 | Range.is(0),
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54 | "Access to the current store object when used in a filter.\n"
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55 | + "Return null if used outer a filter.",
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56 | "store()",
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57 | null,
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58 | "FeatureStore"
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59 | ); |
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60 | } |
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61 | |||
62 | @Override
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63 | public Object call(Interpreter interpreter, Object[] args) throws Exception { |
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64 | 43987 | jjdelcerro | if( feature==null ) { |
65 | return null; |
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66 | } |
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67 | 43983 | jjdelcerro | return feature.getStore();
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68 | } |
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69 | |||
70 | } |
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71 | |||
72 | public class IsSelectedFunction extends AbstractFunction { |
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73 | |||
74 | public IsSelectedFunction() {
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75 | super(
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76 | "Data access",
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77 | "isSelected",
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78 | Range.is(0),
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79 | "Return if the current feature is selected in the store when used in a filter.\n"
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80 | + "Return false if used outer a filter.",
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81 | "isSelected()",
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82 | null,
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83 | "Boolean"
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84 | ); |
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85 | } |
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86 | |||
87 | @Override
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88 | public Object call(Interpreter interpreter, Object[] args) throws Exception { |
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89 | 43987 | jjdelcerro | if( feature==null ) { |
90 | return false; |
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91 | } |
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92 | 43983 | jjdelcerro | FeatureStore store = feature.getStore(); |
93 | FeatureSelection selection = store.getFeatureSelection(); |
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94 | return selection.isSelected(feature);
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95 | } |
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96 | |||
97 | } |
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98 | |||
99 | private Feature feature;
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100 | private FeatureType type;
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101 | |||
102 | 43987 | jjdelcerro | @SuppressWarnings("OverridableMethodCallInConstructor") |
103 | 43983 | jjdelcerro | public DefaultFeatureSymbolTable() {
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104 | 43987 | jjdelcerro | super(DataManager.FEATURE_SYMBOL_TABLE);
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105 | 43983 | jjdelcerro | |
106 | this.addFunction(new FeatureFunction()); |
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107 | this.addFunction(new FeatureStoreFunction()); |
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108 | this.addFunction(new IsSelectedFunction()); |
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109 | } |
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110 | |||
111 | 43984 | jjdelcerro | @SuppressWarnings("OverridableMethodCallInConstructor") |
112 | public DefaultFeatureSymbolTable(Script userScript, UnmodifiableBasicList<Script> scripts) {
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113 | this();
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114 | if (userScript != null) { |
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115 | this.getScripts().add(userScript);
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116 | } |
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117 | if (scripts != null && !scripts.isEmpty()) { |
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118 | for (Script script : scripts) {
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119 | this.getScripts().add(script);
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120 | } |
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121 | } |
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122 | } |
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123 | |||
124 | 43983 | jjdelcerro | @Override
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125 | public FeatureSymbolTable clone() throws CloneNotSupportedException { |
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126 | DefaultFeatureSymbolTable other = (DefaultFeatureSymbolTable) super.clone();
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127 | return other;
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128 | } |
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129 | |||
130 | @Override
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131 | public boolean exists(String name) { |
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132 | 43987 | jjdelcerro | if (type!=null && type.get(name) != null) { |
133 | 43983 | jjdelcerro | return true; |
134 | } |
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135 | return false; |
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136 | } |
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137 | |||
138 | @Override
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139 | public Object value(String name) { |
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140 | 43987 | jjdelcerro | if( feature==null ) { |
141 | return null; |
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142 | } |
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143 | 43983 | jjdelcerro | return this.feature.get(name); |
144 | } |
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145 | |||
146 | @Override
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147 | public void setFeature(Feature feature) { |
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148 | this.feature = feature;
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149 | this.type = feature.getType();
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150 | } |
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151 | |||
152 | public static void selfRegister() { |
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153 | ExpressionEvaluatorManager manager = ExpressionEvaluatorLocator.getManager(); |
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154 | 43987 | jjdelcerro | manager.registerSymbolTable(new DefaultFeatureSymbolTable(), false); |
155 | 43983 | jjdelcerro | } |
156 | } |