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 @ 44006
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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 | 44006 | jjdelcerro | import org.gvsig.expressionevaluator.ExpressionBuilder; |
| 13 | 43521 | jjdelcerro | import org.gvsig.expressionevaluator.ExpressionEvaluatorManager; |
| 14 | import org.gvsig.expressionevaluator.Interpreter; |
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| 15 | import org.gvsig.expressionevaluator.LexicalAnalyzer; |
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| 16 | import org.gvsig.expressionevaluator.MutableSymbolTable; |
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| 17 | import org.gvsig.expressionevaluator.SymbolTable; |
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| 18 | 43983 | jjdelcerro | import org.gvsig.expressionevaluator.impl.symboltable.OGCSymbolTable; |
| 19 | import org.gvsig.expressionevaluator.impl.symboltable.SQLSymbolTable; |
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| 20 | 44006 | jjdelcerro | import org.slf4j.Logger; |
| 21 | import org.slf4j.LoggerFactory; |
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| 22 | 43521 | jjdelcerro | |
| 23 | |||
| 24 | public class DefaultExpressionEvaluatorManager implements ExpressionEvaluatorManager { |
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| 25 | |||
| 26 | 44006 | jjdelcerro | private static final Logger LOGGER = LoggerFactory.getLogger(DefaultExpressionEvaluatorManager.class); |
| 27 | |||
| 28 | 43521 | jjdelcerro | private Double accuracy; |
| 29 | 43983 | jjdelcerro | private final Map<String,SymbolTable>symbolTables; |
| 30 | 43987 | jjdelcerro | private final Set<String>autoloadSymbolTables; |
| 31 | 43521 | jjdelcerro | |
| 32 | public DefaultExpressionEvaluatorManager() {
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| 33 | 43983 | jjdelcerro | this.symbolTables = new HashMap<>(); |
| 34 | 43987 | jjdelcerro | this.autoloadSymbolTables = new HashSet<>(); |
| 35 | this.registerSymbolTable(new SQLSymbolTable(), true); |
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| 36 | this.registerSymbolTable(new OGCSymbolTable(), true); |
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| 37 | 43939 | jjdelcerro | } |
| 38 | |||
| 39 | 43521 | jjdelcerro | @Override
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| 40 | 43983 | jjdelcerro | public SymbolTable getSymbolTable(String name) { |
| 41 | return this.symbolTables.get(name.toUpperCase()); |
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| 42 | 43939 | jjdelcerro | } |
| 43 | |||
| 44 | @Override
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| 45 | 43983 | jjdelcerro | public Collection<SymbolTable> getSymbolTables() { |
| 46 | return this.symbolTables.values(); |
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| 47 | 43939 | jjdelcerro | } |
| 48 | |||
| 49 | @Override
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| 50 | 43987 | jjdelcerro | public final void registerSymbolTable(SymbolTable symbolTable, boolean autoload) { |
| 51 | 44006 | jjdelcerro | if( symbolTable instanceof MutableSymbolTable ) { |
| 52 | LOGGER.warn("Registered a MutableSymbolTable '"+symbolTable.getName()+"'."); |
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| 53 | } |
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| 54 | 43983 | jjdelcerro | this.symbolTables.put(symbolTable.getName().toUpperCase(),symbolTable);
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| 55 | 43987 | jjdelcerro | if( autoload ) {
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| 56 | this.autoloadSymbolTables.add(symbolTable.getName().toUpperCase());
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| 57 | } |
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| 58 | 43939 | jjdelcerro | } |
| 59 | 43987 | jjdelcerro | |
| 60 | 43939 | jjdelcerro | @Override
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| 61 | 43987 | jjdelcerro | public boolean isAutoload(SymbolTable symbolTable) { |
| 62 | return this.autoloadSymbolTables.contains(symbolTable.getName().toUpperCase()); |
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| 63 | } |
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| 64 | |||
| 65 | @Override
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| 66 | 43521 | jjdelcerro | public Object evaluate(String source) { |
| 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 | return interpreter.run(code);
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| 71 | } |
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| 72 | |||
| 73 | @Override
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| 74 | public Object evaluate(SymbolTable symbolTable, String source) { |
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| 75 | DefaultInterpreter interpreter = new DefaultInterpreter();
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| 76 | DefaultCompiler compiler = new DefaultCompiler();
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| 77 | Code code = compiler.compileExpression(source); |
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| 78 | interpreter.setSymbolTable(symbolTable); |
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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, Code code) { |
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| 84 | DefaultInterpreter interpreter = new DefaultInterpreter();
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| 85 | interpreter.setSymbolTable(symbolTable); |
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| 86 | return interpreter.run(code);
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| 87 | } |
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| 88 | |||
| 89 | @Override
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| 90 | public Code compile(String source) { |
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| 91 | DefaultCompiler compiler = new DefaultCompiler();
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| 92 | return compiler.compileExpression(source);
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| 93 | } |
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| 94 | |||
| 95 | @Override
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| 96 | public Code compile(LexicalAnalyzer lex, String source) { |
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| 97 | DefaultCompiler compiler = new DefaultCompiler();
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| 98 | compiler.setLexicalAnalyzer(lex); |
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| 99 | return compiler.compileExpression(source);
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| 100 | } |
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| 101 | |||
| 102 | @Override
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| 103 | public MutableSymbolTable createSymbolTable() {
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| 104 | 43987 | jjdelcerro | DefaultSymbolTable theSymbolTable = new DefaultSymbolTable();
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| 105 | return theSymbolTable;
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| 106 | 43521 | jjdelcerro | } |
| 107 | 43939 | jjdelcerro | |
| 108 | 43987 | jjdelcerro | public void populateSymbolTable(SymbolTable aSymbolTable) { |
| 109 | for (String name : this.autoloadSymbolTables ) { |
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| 110 | SymbolTable symbolTable = this.symbolTables.get(name);
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| 111 | if( symbolTable!=null ) { |
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| 112 | aSymbolTable.addSymbolTable(symbolTable); |
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| 113 | } |
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| 114 | } |
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| 115 | } |
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| 116 | |||
| 117 | 43521 | jjdelcerro | @Override
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| 118 | public LexicalAnalyzer createLexicalAnalyzer() {
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| 119 | return new SQLLexicalAnalyzer(); |
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| 120 | } |
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| 121 | |||
| 122 | @Override
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| 123 | public CodeBuilder createCodeBuilder() {
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| 124 | return new DefaultCodeBuilder(); |
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| 125 | } |
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| 126 | |||
| 127 | @Override
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| 128 | public Compiler createCompiler() { |
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| 129 | return new DefaultCompiler(); |
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| 130 | } |
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| 131 | |||
| 132 | @Override
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| 133 | public Interpreter createInterpreter() {
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| 134 | return new DefaultInterpreter(); |
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| 135 | } |
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| 136 | |||
| 137 | @Override
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| 138 | public Double getAccuracy() { |
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| 139 | return this.accuracy; |
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| 140 | } |
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| 141 | |||
| 142 | @Override
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| 143 | public void setAccuracy(Double accuracy) { |
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| 144 | this.accuracy = accuracy;
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| 145 | } |
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| 146 | 43983 | jjdelcerro | |
| 147 | @Override
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| 148 | public Expression createExpression() { |
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| 149 | DefaultExpression e = new DefaultExpression();
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| 150 | return e;
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| 151 | } |
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| 152 | 44006 | jjdelcerro | |
| 153 | @Override
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| 154 | public ExpressionBuilder createExpressionBuilder() {
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| 155 | ExpressionBuilder x = new DefaultExpressionBuilder();
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| 156 | return x;
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| 157 | } |
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| 158 | 43521 | jjdelcerro | } |