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
History | View | Annotate | Download (4.43 KB)
1 |
package org.gvsig.expressionevaluator.impl; |
---|---|
2 |
|
3 |
import java.util.Collection; |
4 |
import java.util.HashMap; |
5 |
import java.util.HashSet; |
6 |
import java.util.Map; |
7 |
import java.util.Set; |
8 |
import org.gvsig.expressionevaluator.Code; |
9 |
import org.gvsig.expressionevaluator.CodeBuilder; |
10 |
import org.gvsig.expressionevaluator.Compiler; |
11 |
import org.gvsig.expressionevaluator.Expression; |
12 |
import org.gvsig.expressionevaluator.ExpressionEvaluatorManager; |
13 |
import org.gvsig.expressionevaluator.Interpreter; |
14 |
import org.gvsig.expressionevaluator.LexicalAnalyzer; |
15 |
import org.gvsig.expressionevaluator.MutableSymbolTable; |
16 |
import org.gvsig.expressionevaluator.SymbolTable; |
17 |
import org.gvsig.expressionevaluator.impl.symboltable.OGCSymbolTable; |
18 |
import org.gvsig.expressionevaluator.impl.symboltable.SQLSymbolTable; |
19 |
|
20 |
|
21 |
public class DefaultExpressionEvaluatorManager implements ExpressionEvaluatorManager { |
22 |
|
23 |
private Double accuracy; |
24 |
private final Map<String,SymbolTable>symbolTables; |
25 |
private final Set<String>autoloadSymbolTables; |
26 |
|
27 |
public DefaultExpressionEvaluatorManager() {
|
28 |
this.symbolTables = new HashMap<>(); |
29 |
this.autoloadSymbolTables = new HashSet<>(); |
30 |
this.registerSymbolTable(new SQLSymbolTable(), true); |
31 |
this.registerSymbolTable(new OGCSymbolTable(), true); |
32 |
} |
33 |
|
34 |
@Override
|
35 |
public SymbolTable getSymbolTable(String name) { |
36 |
return this.symbolTables.get(name.toUpperCase()); |
37 |
} |
38 |
|
39 |
@Override
|
40 |
public Collection<SymbolTable> getSymbolTables() { |
41 |
return this.symbolTables.values(); |
42 |
} |
43 |
|
44 |
@Override
|
45 |
public final void registerSymbolTable(SymbolTable symbolTable, boolean autoload) { |
46 |
this.symbolTables.put(symbolTable.getName().toUpperCase(),symbolTable);
|
47 |
if( autoload ) {
|
48 |
this.autoloadSymbolTables.add(symbolTable.getName().toUpperCase());
|
49 |
} |
50 |
} |
51 |
|
52 |
@Override
|
53 |
public boolean isAutoload(SymbolTable symbolTable) { |
54 |
return this.autoloadSymbolTables.contains(symbolTable.getName().toUpperCase()); |
55 |
} |
56 |
|
57 |
@Override
|
58 |
public Object evaluate(String source) { |
59 |
DefaultInterpreter interpreter = new DefaultInterpreter();
|
60 |
DefaultCompiler compiler = new DefaultCompiler();
|
61 |
Code code = compiler.compileExpression(source); |
62 |
return interpreter.run(code);
|
63 |
} |
64 |
|
65 |
@Override
|
66 |
public Object evaluate(SymbolTable symbolTable, String source) { |
67 |
DefaultInterpreter interpreter = new DefaultInterpreter();
|
68 |
DefaultCompiler compiler = new DefaultCompiler();
|
69 |
Code code = compiler.compileExpression(source); |
70 |
interpreter.setSymbolTable(symbolTable); |
71 |
return interpreter.run(code);
|
72 |
} |
73 |
|
74 |
@Override
|
75 |
public Object evaluate(SymbolTable symbolTable, Code code) { |
76 |
DefaultInterpreter interpreter = new DefaultInterpreter();
|
77 |
interpreter.setSymbolTable(symbolTable); |
78 |
return interpreter.run(code);
|
79 |
} |
80 |
|
81 |
@Override
|
82 |
public Code compile(String source) { |
83 |
DefaultCompiler compiler = new DefaultCompiler();
|
84 |
return compiler.compileExpression(source);
|
85 |
} |
86 |
|
87 |
@Override
|
88 |
public Code compile(LexicalAnalyzer lex, String source) { |
89 |
DefaultCompiler compiler = new DefaultCompiler();
|
90 |
compiler.setLexicalAnalyzer(lex); |
91 |
return compiler.compileExpression(source);
|
92 |
} |
93 |
|
94 |
@Override
|
95 |
public MutableSymbolTable createSymbolTable() {
|
96 |
DefaultSymbolTable theSymbolTable = new DefaultSymbolTable();
|
97 |
return theSymbolTable;
|
98 |
} |
99 |
|
100 |
public void populateSymbolTable(SymbolTable aSymbolTable) { |
101 |
for (String name : this.autoloadSymbolTables ) { |
102 |
SymbolTable symbolTable = this.symbolTables.get(name);
|
103 |
if( symbolTable!=null ) { |
104 |
aSymbolTable.addSymbolTable(symbolTable); |
105 |
} |
106 |
} |
107 |
} |
108 |
|
109 |
@Override
|
110 |
public LexicalAnalyzer createLexicalAnalyzer() {
|
111 |
return new SQLLexicalAnalyzer(); |
112 |
} |
113 |
|
114 |
@Override
|
115 |
public CodeBuilder createCodeBuilder() {
|
116 |
return new DefaultCodeBuilder(); |
117 |
} |
118 |
|
119 |
@Override
|
120 |
public Compiler createCompiler() { |
121 |
return new DefaultCompiler(); |
122 |
} |
123 |
|
124 |
@Override
|
125 |
public Interpreter createInterpreter() {
|
126 |
return new DefaultInterpreter(); |
127 |
} |
128 |
|
129 |
@Override
|
130 |
public Double getAccuracy() { |
131 |
return this.accuracy; |
132 |
} |
133 |
|
134 |
@Override
|
135 |
public void setAccuracy(Double accuracy) { |
136 |
this.accuracy = accuracy;
|
137 |
} |
138 |
|
139 |
@Override
|
140 |
public Expression createExpression() { |
141 |
DefaultExpression e = new DefaultExpression();
|
142 |
return e;
|
143 |
} |
144 |
|
145 |
} |
146 |
|