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 @ 44340
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1 | 43521 | jjdelcerro | package org.gvsig.expressionevaluator.impl; |
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2 | |||
3 | 44339 | jjdelcerro | import java.io.InputStream; |
4 | import java.net.URI; |
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5 | import java.net.URL; |
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6 | 44139 | jjdelcerro | import org.gvsig.expressionevaluator.Grammar; |
7 | import org.gvsig.expressionevaluator.GrammarFactory; |
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8 | 43983 | jjdelcerro | import java.util.Collection; |
9 | 43939 | jjdelcerro | import java.util.HashMap; |
10 | import java.util.Map; |
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11 | 44339 | jjdelcerro | import org.apache.commons.io.FilenameUtils; |
12 | import org.apache.commons.io.IOUtils; |
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13 | 44263 | jjdelcerro | import org.gvsig.expressionevaluator.Bookmarks; |
14 | 43521 | jjdelcerro | import org.gvsig.expressionevaluator.Code; |
15 | import org.gvsig.expressionevaluator.CodeBuilder; |
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16 | 43983 | jjdelcerro | import org.gvsig.expressionevaluator.Expression; |
17 | 44006 | jjdelcerro | import org.gvsig.expressionevaluator.ExpressionBuilder; |
18 | 43521 | jjdelcerro | import org.gvsig.expressionevaluator.ExpressionEvaluatorManager; |
19 | import org.gvsig.expressionevaluator.Interpreter; |
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20 | import org.gvsig.expressionevaluator.LexicalAnalyzer; |
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21 | import org.gvsig.expressionevaluator.MutableSymbolTable; |
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22 | 44009 | jjdelcerro | import org.gvsig.expressionevaluator.Optimizer; |
23 | 43521 | jjdelcerro | import org.gvsig.expressionevaluator.SymbolTable; |
24 | 44126 | jjdelcerro | import org.gvsig.expressionevaluator.SymbolTableFactory; |
25 | 44139 | jjdelcerro | import org.gvsig.expressionevaluator.Compiler; |
26 | import org.gvsig.expressionevaluator.GrammarSet; |
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27 | 44263 | jjdelcerro | import org.gvsig.expressionevaluator.History; |
28 | 44339 | jjdelcerro | import org.gvsig.tools.script.Script; |
29 | 44006 | jjdelcerro | import org.slf4j.Logger; |
30 | import org.slf4j.LoggerFactory; |
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31 | 43521 | jjdelcerro | |
32 | |||
33 | 44339 | jjdelcerro | @SuppressWarnings("UseSpecificCatch") |
34 | 43521 | jjdelcerro | public class DefaultExpressionEvaluatorManager implements ExpressionEvaluatorManager { |
35 | |||
36 | 44006 | jjdelcerro | private static final Logger LOGGER = LoggerFactory.getLogger(DefaultExpressionEvaluatorManager.class); |
37 | |||
38 | 43521 | jjdelcerro | private Double accuracy; |
39 | 44126 | jjdelcerro | private final Map<String,SymbolTableFactory>symbolTableFactories; |
40 | 44139 | jjdelcerro | private final Map<String,GrammarFactory> grammarFactories; |
41 | 44263 | jjdelcerro | private Bookmarks bookmarks;
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42 | private History history;
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43 | 43521 | jjdelcerro | |
44 | public DefaultExpressionEvaluatorManager() {
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45 | 44126 | jjdelcerro | this.symbolTableFactories = new HashMap<>(); |
46 | 44139 | jjdelcerro | this.grammarFactories = new HashMap<>(); |
47 | 43939 | jjdelcerro | } |
48 | |||
49 | 43521 | jjdelcerro | @Override
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50 | 43983 | jjdelcerro | public SymbolTable getSymbolTable(String name) { |
51 | 44126 | jjdelcerro | if( name == null ) { |
52 | return null; |
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53 | } |
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54 | SymbolTableFactory factory = this.symbolTableFactories.get(name.toUpperCase());
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55 | if( factory == null ) { |
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56 | return null; |
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57 | } |
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58 | return factory.createSymbolTable();
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59 | 43939 | jjdelcerro | } |
60 | |||
61 | @Override
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62 | 44126 | jjdelcerro | public Collection<SymbolTableFactory> getSymbolTableFactories() { |
63 | return this.symbolTableFactories.values(); |
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64 | 43939 | jjdelcerro | } |
65 | |||
66 | @Override
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67 | 44126 | jjdelcerro | public final void registerSymbolTable(SymbolTableFactory factory) { |
68 | if( factory == null ) { |
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69 | throw new IllegalArgumentException("factory can't be null"); |
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70 | 44006 | jjdelcerro | } |
71 | 44126 | jjdelcerro | this.symbolTableFactories.put(factory.getName().toUpperCase(),factory);
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72 | 43939 | jjdelcerro | } |
73 | 43987 | jjdelcerro | |
74 | 43939 | jjdelcerro | @Override
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75 | 43521 | jjdelcerro | public Object evaluate(String source) { |
76 | DefaultInterpreter interpreter = new DefaultInterpreter();
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77 | DefaultCompiler compiler = new DefaultCompiler();
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78 | Code code = compiler.compileExpression(source); |
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79 | return interpreter.run(code);
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80 | } |
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81 | |||
82 | @Override
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83 | public Object evaluate(SymbolTable symbolTable, String source) { |
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84 | DefaultInterpreter interpreter = new DefaultInterpreter();
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85 | DefaultCompiler compiler = new DefaultCompiler();
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86 | Code code = compiler.compileExpression(source); |
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87 | interpreter.setSymbolTable(symbolTable); |
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88 | return interpreter.run(code);
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89 | } |
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90 | |||
91 | @Override
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92 | public Object evaluate(SymbolTable symbolTable, Code code) { |
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93 | DefaultInterpreter interpreter = new DefaultInterpreter();
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94 | interpreter.setSymbolTable(symbolTable); |
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95 | return interpreter.run(code);
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96 | } |
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97 | |||
98 | @Override
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99 | public Code compile(String source) { |
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100 | 44139 | jjdelcerro | Compiler compiler = this.createCompiler(); |
101 | 43521 | jjdelcerro | return compiler.compileExpression(source);
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102 | } |
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103 | |||
104 | @Override
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105 | public Code compile(LexicalAnalyzer lex, String source) { |
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106 | 44139 | jjdelcerro | Compiler compiler = this.createCompiler(); |
107 | 43521 | jjdelcerro | compiler.setLexicalAnalyzer(lex); |
108 | return compiler.compileExpression(source);
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109 | } |
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110 | |||
111 | @Override
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112 | 44019 | jjdelcerro | public Code optimize(SymbolTable symbolTable, Code code) {
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113 | Optimizer optimizer = this.createOptimizer();
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114 | return optimizer.optimize(symbolTable, code);
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115 | } |
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116 | |||
117 | @Override
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118 | 43521 | jjdelcerro | public MutableSymbolTable createSymbolTable() {
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119 | 43987 | jjdelcerro | DefaultSymbolTable theSymbolTable = new DefaultSymbolTable();
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120 | return theSymbolTable;
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121 | 43521 | jjdelcerro | } |
122 | 43939 | jjdelcerro | |
123 | 43987 | jjdelcerro | public void populateSymbolTable(SymbolTable aSymbolTable) { |
124 | 44126 | jjdelcerro | for (SymbolTableFactory factory : this.getSymbolTableFactories() ) { |
125 | if( factory.isAutoload() ) {
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126 | SymbolTable symbolTable = factory.createSymbolTable(); |
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127 | 43987 | jjdelcerro | aSymbolTable.addSymbolTable(symbolTable); |
128 | } |
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129 | } |
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130 | } |
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131 | |||
132 | 43521 | jjdelcerro | @Override
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133 | public LexicalAnalyzer createLexicalAnalyzer() {
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134 | return new SQLLexicalAnalyzer(); |
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135 | } |
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136 | |||
137 | @Override
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138 | public CodeBuilder createCodeBuilder() {
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139 | return new DefaultCodeBuilder(); |
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140 | } |
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141 | |||
142 | @Override
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143 | public Compiler createCompiler() { |
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144 | 44139 | jjdelcerro | DefaultCompiler compiler = new DefaultCompiler();
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145 | this.populateGrammars(compiler);
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146 | return compiler;
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147 | 43521 | jjdelcerro | } |
148 | |||
149 | @Override
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150 | public Interpreter createInterpreter() {
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151 | return new DefaultInterpreter(); |
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152 | } |
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153 | |||
154 | @Override
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155 | public Double getAccuracy() { |
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156 | return this.accuracy; |
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157 | } |
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158 | |||
159 | @Override
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160 | public void setAccuracy(Double accuracy) { |
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161 | this.accuracy = accuracy;
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162 | } |
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163 | 43983 | jjdelcerro | |
164 | @Override
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165 | public Expression createExpression() { |
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166 | DefaultExpression e = new DefaultExpression();
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167 | return e;
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168 | } |
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169 | 44006 | jjdelcerro | |
170 | @Override
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171 | public ExpressionBuilder createExpressionBuilder() {
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172 | ExpressionBuilder x = new DefaultExpressionBuilder();
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173 | return x;
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174 | } |
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175 | 44009 | jjdelcerro | |
176 | @Override
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177 | public Optimizer createOptimizer() {
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178 | Optimizer x = new DefaultOptimizer();
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179 | return x;
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180 | } |
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181 | 44139 | jjdelcerro | |
182 | @Override
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183 | public void registerGrammar(GrammarFactory factory) { |
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184 | if( factory==null ) { |
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185 | throw new IllegalArgumentException("factory can't be null"); |
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186 | } |
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187 | this.grammarFactories.put(factory.getName(), factory);
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188 | } |
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189 | |||
190 | @Override
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191 | public Collection<GrammarFactory> getGrammarFactories() { |
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192 | return this.grammarFactories.values(); |
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193 | } |
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194 | |||
195 | public void populateGrammars(Compiler compiler) { |
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196 | GrammarSet grammarSet = compiler.getGrammars(); |
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197 | for (GrammarFactory factory : this.getGrammarFactories() ) { |
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198 | if( factory.isAutoload() ) {
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199 | Grammar grammar = factory.createGrammar(); |
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200 | grammarSet.add(grammar); |
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201 | } |
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202 | } |
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203 | } |
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204 | |||
205 | 44263 | jjdelcerro | @Override
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206 | 44139 | jjdelcerro | public Grammar createGrammar(String name) { |
207 | DefaultGrammar grammar = new DefaultGrammar(name);
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208 | return grammar;
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209 | } |
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210 | 44263 | jjdelcerro | |
211 | @Override
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212 | public Bookmarks getBookmarks() {
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213 | if( this.bookmarks==null ) { |
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214 | this.bookmarks = new DefaultBookmarks(); |
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215 | } |
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216 | return this.bookmarks; |
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217 | } |
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218 | |||
219 | @Override
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220 | public History getHistory() {
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221 | if( this.history==null ) { |
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222 | this.history = new DefaultHistory(20); |
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223 | } |
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224 | return this.history; |
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225 | } |
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226 | 44339 | jjdelcerro | |
227 | @Override
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228 | public Script createScript(String name, String code, String languaje) { |
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229 | SimpleScript sc = new SimpleScript(name, code);
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230 | return sc;
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231 | } |
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232 | |||
233 | @Override
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234 | public Script locateScript(String name) { |
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235 | return null; |
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236 | } |
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237 | |||
238 | @Override
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239 | public Script loadScript(URI location) { |
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240 | InputStream is = null; |
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241 | String code = null; |
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242 | String name = null; |
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243 | try {
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244 | URL url = location.toURL();
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245 | is = url.openStream(); |
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246 | code = IOUtils.toString(is); |
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247 | name = FilenameUtils.getBaseName(location.getPath()); |
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248 | } catch(Exception ex) { |
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249 | return null; |
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250 | } finally {
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251 | IOUtils.closeQuietly(is); |
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252 | } |
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253 | return this.createScript(name, code, "COSA"); |
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254 | } |
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255 | |||
256 | 43521 | jjdelcerro | } |