svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.library / org.gvsig.expressionevaluator / org.gvsig.expressionevaluator.lib / org.gvsig.expressionevaluator.lib.impl / src / main / java / org / gvsig / expressionevaluator / impl / DefaultExpressionEvaluatorManager.java @ 44151
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1 | 43521 | jjdelcerro | package org.gvsig.expressionevaluator.impl; |
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2 | |||
3 | 44139 | jjdelcerro | import org.gvsig.expressionevaluator.Grammar; |
4 | import org.gvsig.expressionevaluator.GrammarFactory; |
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5 | 43983 | jjdelcerro | import java.util.Collection; |
6 | 43939 | jjdelcerro | import java.util.HashMap; |
7 | import java.util.Map; |
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8 | 43521 | jjdelcerro | import org.gvsig.expressionevaluator.Code; |
9 | import org.gvsig.expressionevaluator.CodeBuilder; |
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10 | 43983 | jjdelcerro | import org.gvsig.expressionevaluator.Expression; |
11 | 44006 | jjdelcerro | import org.gvsig.expressionevaluator.ExpressionBuilder; |
12 | 43521 | jjdelcerro | import org.gvsig.expressionevaluator.ExpressionEvaluatorManager; |
13 | import org.gvsig.expressionevaluator.Interpreter; |
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14 | import org.gvsig.expressionevaluator.LexicalAnalyzer; |
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15 | import org.gvsig.expressionevaluator.MutableSymbolTable; |
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16 | 44009 | jjdelcerro | import org.gvsig.expressionevaluator.Optimizer; |
17 | 43521 | jjdelcerro | import org.gvsig.expressionevaluator.SymbolTable; |
18 | 44126 | jjdelcerro | import org.gvsig.expressionevaluator.SymbolTableFactory; |
19 | 44139 | jjdelcerro | import org.gvsig.expressionevaluator.Compiler; |
20 | import org.gvsig.expressionevaluator.GrammarSet; |
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21 | 44006 | jjdelcerro | import org.slf4j.Logger; |
22 | import org.slf4j.LoggerFactory; |
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23 | 43521 | jjdelcerro | |
24 | |||
25 | public class DefaultExpressionEvaluatorManager implements ExpressionEvaluatorManager { |
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26 | |||
27 | 44006 | jjdelcerro | private static final Logger LOGGER = LoggerFactory.getLogger(DefaultExpressionEvaluatorManager.class); |
28 | |||
29 | 43521 | jjdelcerro | private Double accuracy; |
30 | 44126 | jjdelcerro | private final Map<String,SymbolTableFactory>symbolTableFactories; |
31 | 44139 | jjdelcerro | private final Map<String,GrammarFactory> grammarFactories; |
32 | 43521 | jjdelcerro | |
33 | public DefaultExpressionEvaluatorManager() {
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34 | 44126 | jjdelcerro | this.symbolTableFactories = new HashMap<>(); |
35 | 44139 | jjdelcerro | this.grammarFactories = new HashMap<>(); |
36 | 43939 | jjdelcerro | } |
37 | |||
38 | 43521 | jjdelcerro | @Override
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39 | 43983 | jjdelcerro | public SymbolTable getSymbolTable(String name) { |
40 | 44126 | jjdelcerro | if( name == null ) { |
41 | return null; |
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42 | } |
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43 | SymbolTableFactory factory = this.symbolTableFactories.get(name.toUpperCase());
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44 | if( factory == null ) { |
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45 | return null; |
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46 | } |
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47 | return factory.createSymbolTable();
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48 | 43939 | jjdelcerro | } |
49 | |||
50 | @Override
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51 | 44126 | jjdelcerro | public Collection<SymbolTableFactory> getSymbolTableFactories() { |
52 | return this.symbolTableFactories.values(); |
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53 | 43939 | jjdelcerro | } |
54 | |||
55 | @Override
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56 | 44126 | jjdelcerro | public final void registerSymbolTable(SymbolTableFactory factory) { |
57 | if( factory == null ) { |
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58 | throw new IllegalArgumentException("factory can't be null"); |
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59 | 44006 | jjdelcerro | } |
60 | 44126 | jjdelcerro | this.symbolTableFactories.put(factory.getName().toUpperCase(),factory);
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61 | 43939 | jjdelcerro | } |
62 | 43987 | jjdelcerro | |
63 | 43939 | jjdelcerro | @Override
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64 | 43521 | jjdelcerro | public Object evaluate(String source) { |
65 | DefaultInterpreter interpreter = new DefaultInterpreter();
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66 | DefaultCompiler compiler = new DefaultCompiler();
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67 | Code code = compiler.compileExpression(source); |
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68 | return interpreter.run(code);
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69 | } |
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70 | |||
71 | @Override
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72 | public Object evaluate(SymbolTable symbolTable, String source) { |
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73 | DefaultInterpreter interpreter = new DefaultInterpreter();
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74 | DefaultCompiler compiler = new DefaultCompiler();
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75 | Code code = compiler.compileExpression(source); |
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76 | interpreter.setSymbolTable(symbolTable); |
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77 | return interpreter.run(code);
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78 | } |
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79 | |||
80 | @Override
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81 | public Object evaluate(SymbolTable symbolTable, Code code) { |
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82 | DefaultInterpreter interpreter = new DefaultInterpreter();
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83 | interpreter.setSymbolTable(symbolTable); |
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84 | return interpreter.run(code);
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85 | } |
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86 | |||
87 | @Override
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88 | public Code compile(String source) { |
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89 | 44139 | jjdelcerro | Compiler compiler = this.createCompiler(); |
90 | 43521 | jjdelcerro | return compiler.compileExpression(source);
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91 | } |
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92 | |||
93 | @Override
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94 | public Code compile(LexicalAnalyzer lex, String source) { |
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95 | 44139 | jjdelcerro | Compiler compiler = this.createCompiler(); |
96 | 43521 | jjdelcerro | compiler.setLexicalAnalyzer(lex); |
97 | return compiler.compileExpression(source);
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98 | } |
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99 | |||
100 | @Override
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101 | 44019 | jjdelcerro | public Code optimize(SymbolTable symbolTable, Code code) {
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102 | Optimizer optimizer = this.createOptimizer();
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103 | return optimizer.optimize(symbolTable, code);
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104 | } |
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105 | |||
106 | @Override
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107 | 43521 | jjdelcerro | public MutableSymbolTable createSymbolTable() {
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108 | 43987 | jjdelcerro | DefaultSymbolTable theSymbolTable = new DefaultSymbolTable();
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109 | return theSymbolTable;
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110 | 43521 | jjdelcerro | } |
111 | 43939 | jjdelcerro | |
112 | 43987 | jjdelcerro | public void populateSymbolTable(SymbolTable aSymbolTable) { |
113 | 44126 | jjdelcerro | for (SymbolTableFactory factory : this.getSymbolTableFactories() ) { |
114 | if( factory.isAutoload() ) {
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115 | SymbolTable symbolTable = factory.createSymbolTable(); |
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116 | 43987 | jjdelcerro | aSymbolTable.addSymbolTable(symbolTable); |
117 | } |
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118 | } |
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119 | } |
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120 | |||
121 | 43521 | jjdelcerro | @Override
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122 | public LexicalAnalyzer createLexicalAnalyzer() {
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123 | return new SQLLexicalAnalyzer(); |
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124 | } |
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125 | |||
126 | @Override
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127 | public CodeBuilder createCodeBuilder() {
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128 | return new DefaultCodeBuilder(); |
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129 | } |
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130 | |||
131 | @Override
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132 | public Compiler createCompiler() { |
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133 | 44139 | jjdelcerro | DefaultCompiler compiler = new DefaultCompiler();
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134 | this.populateGrammars(compiler);
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135 | return compiler;
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136 | 43521 | jjdelcerro | } |
137 | |||
138 | @Override
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139 | public Interpreter createInterpreter() {
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140 | return new DefaultInterpreter(); |
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141 | } |
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142 | |||
143 | @Override
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144 | public Double getAccuracy() { |
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145 | return this.accuracy; |
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146 | } |
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147 | |||
148 | @Override
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149 | public void setAccuracy(Double accuracy) { |
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150 | this.accuracy = accuracy;
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151 | } |
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152 | 43983 | jjdelcerro | |
153 | @Override
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154 | public Expression createExpression() { |
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155 | DefaultExpression e = new DefaultExpression();
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156 | return e;
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157 | } |
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158 | 44006 | jjdelcerro | |
159 | @Override
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160 | public ExpressionBuilder createExpressionBuilder() {
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161 | ExpressionBuilder x = new DefaultExpressionBuilder();
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162 | return x;
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163 | } |
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164 | 44009 | jjdelcerro | |
165 | @Override
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166 | public Optimizer createOptimizer() {
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167 | Optimizer x = new DefaultOptimizer();
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168 | return x;
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169 | } |
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170 | 44139 | jjdelcerro | |
171 | @Override
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172 | public void registerGrammar(GrammarFactory factory) { |
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173 | if( factory==null ) { |
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174 | throw new IllegalArgumentException("factory can't be null"); |
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175 | } |
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176 | this.grammarFactories.put(factory.getName(), factory);
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177 | } |
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178 | |||
179 | @Override
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180 | public Collection<GrammarFactory> getGrammarFactories() { |
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181 | return this.grammarFactories.values(); |
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182 | } |
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183 | |||
184 | public void populateGrammars(Compiler compiler) { |
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185 | GrammarSet grammarSet = compiler.getGrammars(); |
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186 | for (GrammarFactory factory : this.getGrammarFactories() ) { |
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187 | if( factory.isAutoload() ) {
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188 | Grammar grammar = factory.createGrammar(); |
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189 | grammarSet.add(grammar); |
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190 | } |
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191 | } |
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192 | } |
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193 | |||
194 | public Grammar createGrammar(String name) { |
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195 | DefaultGrammar grammar = new DefaultGrammar(name);
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196 | return grammar;
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197 | } |
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198 | 43521 | jjdelcerro | } |