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 @ 43987
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| 1 | 43521 | jjdelcerro | package org.gvsig.expressionevaluator.impl; |
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| 2 | |||
| 3 | 43983 | jjdelcerro | import java.util.Collection; |
| 4 | 43939 | jjdelcerro | import java.util.HashMap; |
| 5 | 43987 | jjdelcerro | import java.util.HashSet; |
| 6 | 43939 | jjdelcerro | import java.util.Map; |
| 7 | 43987 | jjdelcerro | import java.util.Set; |
| 8 | 43521 | jjdelcerro | import org.gvsig.expressionevaluator.Code; |
| 9 | import org.gvsig.expressionevaluator.CodeBuilder; |
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| 10 | import org.gvsig.expressionevaluator.Compiler; |
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| 11 | 43983 | jjdelcerro | import org.gvsig.expressionevaluator.Expression; |
| 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 | import org.gvsig.expressionevaluator.SymbolTable; |
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| 17 | 43983 | jjdelcerro | import org.gvsig.expressionevaluator.impl.symboltable.OGCSymbolTable; |
| 18 | import org.gvsig.expressionevaluator.impl.symboltable.SQLSymbolTable; |
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| 19 | 43521 | jjdelcerro | |
| 20 | |||
| 21 | public class DefaultExpressionEvaluatorManager implements ExpressionEvaluatorManager { |
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| 22 | |||
| 23 | private Double accuracy; |
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| 24 | 43983 | jjdelcerro | private final Map<String,SymbolTable>symbolTables; |
| 25 | 43987 | jjdelcerro | private final Set<String>autoloadSymbolTables; |
| 26 | 43521 | jjdelcerro | |
| 27 | public DefaultExpressionEvaluatorManager() {
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| 28 | 43983 | jjdelcerro | this.symbolTables = new HashMap<>(); |
| 29 | 43987 | jjdelcerro | this.autoloadSymbolTables = new HashSet<>(); |
| 30 | this.registerSymbolTable(new SQLSymbolTable(), true); |
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| 31 | this.registerSymbolTable(new OGCSymbolTable(), true); |
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| 32 | 43939 | jjdelcerro | } |
| 33 | |||
| 34 | 43521 | jjdelcerro | @Override
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| 35 | 43983 | jjdelcerro | public SymbolTable getSymbolTable(String name) { |
| 36 | return this.symbolTables.get(name.toUpperCase()); |
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| 37 | 43939 | jjdelcerro | } |
| 38 | |||
| 39 | @Override
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| 40 | 43983 | jjdelcerro | public Collection<SymbolTable> getSymbolTables() { |
| 41 | return this.symbolTables.values(); |
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| 42 | 43939 | jjdelcerro | } |
| 43 | |||
| 44 | @Override
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| 45 | 43987 | jjdelcerro | public final void registerSymbolTable(SymbolTable symbolTable, boolean autoload) { |
| 46 | 43983 | jjdelcerro | this.symbolTables.put(symbolTable.getName().toUpperCase(),symbolTable);
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| 47 | 43987 | jjdelcerro | if( autoload ) {
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| 48 | this.autoloadSymbolTables.add(symbolTable.getName().toUpperCase());
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| 49 | } |
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| 50 | 43939 | jjdelcerro | } |
| 51 | 43987 | jjdelcerro | |
| 52 | 43939 | jjdelcerro | @Override
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| 53 | 43987 | jjdelcerro | public boolean isAutoload(SymbolTable symbolTable) { |
| 54 | return this.autoloadSymbolTables.contains(symbolTable.getName().toUpperCase()); |
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| 55 | } |
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| 56 | |||
| 57 | @Override
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| 58 | 43521 | jjdelcerro | public Object evaluate(String source) { |
| 59 | DefaultInterpreter interpreter = new DefaultInterpreter();
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| 60 | DefaultCompiler compiler = new DefaultCompiler();
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| 61 | Code code = compiler.compileExpression(source); |
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| 62 | return interpreter.run(code);
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| 63 | } |
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| 64 | |||
| 65 | @Override
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| 66 | public Object evaluate(SymbolTable symbolTable, String source) { |
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| 67 | DefaultInterpreter interpreter = new DefaultInterpreter();
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| 68 | DefaultCompiler compiler = new DefaultCompiler();
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| 69 | Code code = compiler.compileExpression(source); |
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| 70 | interpreter.setSymbolTable(symbolTable); |
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| 71 | return interpreter.run(code);
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| 72 | } |
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| 73 | |||
| 74 | @Override
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| 75 | public Object evaluate(SymbolTable symbolTable, Code code) { |
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| 76 | DefaultInterpreter interpreter = new DefaultInterpreter();
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| 77 | interpreter.setSymbolTable(symbolTable); |
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| 78 | return interpreter.run(code);
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| 79 | } |
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| 80 | |||
| 81 | @Override
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| 82 | public Code compile(String source) { |
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| 83 | DefaultCompiler compiler = new DefaultCompiler();
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| 84 | return compiler.compileExpression(source);
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| 85 | } |
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| 86 | |||
| 87 | @Override
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| 88 | public Code compile(LexicalAnalyzer lex, String source) { |
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| 89 | DefaultCompiler compiler = new DefaultCompiler();
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| 90 | compiler.setLexicalAnalyzer(lex); |
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| 91 | return compiler.compileExpression(source);
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| 92 | } |
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| 93 | |||
| 94 | @Override
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| 95 | public MutableSymbolTable createSymbolTable() {
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| 96 | 43987 | jjdelcerro | DefaultSymbolTable theSymbolTable = new DefaultSymbolTable();
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| 97 | return theSymbolTable;
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| 98 | 43521 | jjdelcerro | } |
| 99 | 43939 | jjdelcerro | |
| 100 | 43987 | jjdelcerro | public void populateSymbolTable(SymbolTable aSymbolTable) { |
| 101 | for (String name : this.autoloadSymbolTables ) { |
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| 102 | SymbolTable symbolTable = this.symbolTables.get(name);
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| 103 | if( symbolTable!=null ) { |
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| 104 | aSymbolTable.addSymbolTable(symbolTable); |
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| 105 | } |
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| 106 | } |
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| 107 | } |
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| 108 | |||
| 109 | 43521 | jjdelcerro | @Override
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| 110 | public LexicalAnalyzer createLexicalAnalyzer() {
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| 111 | return new SQLLexicalAnalyzer(); |
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| 112 | } |
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| 113 | |||
| 114 | @Override
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| 115 | public CodeBuilder createCodeBuilder() {
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| 116 | return new DefaultCodeBuilder(); |
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| 117 | } |
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| 118 | |||
| 119 | @Override
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| 120 | public Compiler createCompiler() { |
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| 121 | return new DefaultCompiler(); |
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| 122 | } |
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| 123 | |||
| 124 | @Override
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| 125 | public Interpreter createInterpreter() {
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| 126 | return new DefaultInterpreter(); |
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| 127 | } |
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| 128 | |||
| 129 | @Override
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| 130 | public Double getAccuracy() { |
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| 131 | return this.accuracy; |
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| 132 | } |
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| 133 | |||
| 134 | @Override
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| 135 | public void setAccuracy(Double accuracy) { |
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| 136 | this.accuracy = accuracy;
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| 137 | } |
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| 138 | 43983 | jjdelcerro | |
| 139 | @Override
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| 140 | public Expression createExpression() { |
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| 141 | DefaultExpression e = new DefaultExpression();
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| 142 | return e;
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| 143 | } |
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| 144 | |||
| 145 | 43521 | jjdelcerro | } |