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 / function / operator / AddOperator.java @ 44207
History | View | Annotate | Download (3.79 KB)
1 | 43512 | jjdelcerro | package org.gvsig.expressionevaluator.impl.function.operator; |
---|---|---|---|
2 | |||
3 | 44191 | jjdelcerro | import java.util.Objects; |
4 | 44010 | jjdelcerro | import org.gvsig.expressionevaluator.Code; |
5 | import org.gvsig.expressionevaluator.Code.Caller; |
||
6 | import org.gvsig.expressionevaluator.Code.Constant; |
||
7 | 44207 | jjdelcerro | import org.gvsig.expressionevaluator.ExpressionBuilder; |
8 | import static org.gvsig.expressionevaluator.ExpressionBuilder.OPERATOR_ADD; |
||
9 | 44191 | jjdelcerro | import org.gvsig.expressionevaluator.ExpressionRuntimeException; |
10 | 43521 | jjdelcerro | import org.gvsig.expressionevaluator.Function; |
11 | import org.gvsig.expressionevaluator.Interpreter; |
||
12 | 44010 | jjdelcerro | import org.gvsig.expressionevaluator.Optimizer; |
13 | import org.gvsig.expressionevaluator.Optimizer.FunctionOptimizer; |
||
14 | 44191 | jjdelcerro | import org.gvsig.expressionevaluator.impl.I18N; |
15 | 43521 | jjdelcerro | |
16 | 44010 | jjdelcerro | public class AddOperator |
17 | extends AbstractBinaryOperator
|
||
18 | implements FunctionOptimizer
|
||
19 | { |
||
20 | 43512 | jjdelcerro | |
21 | 44139 | jjdelcerro | |
22 | 43512 | jjdelcerro | public AddOperator() {
|
23 | 44207 | jjdelcerro | super(Function.GROUP_NUMERIC, OPERATOR_ADD, true); |
24 | 43512 | jjdelcerro | } |
25 | |||
26 | @Override
|
||
27 | 44009 | jjdelcerro | public boolean allowConstantFolding() { |
28 | return true; |
||
29 | } |
||
30 | |||
31 | @Override
|
||
32 | 43521 | jjdelcerro | public Object call(Interpreter interpreter, Object op1, Object op2) { |
33 | 43512 | jjdelcerro | int type = this.getType(op1, op2); |
34 | if( (type & TYPE_DOUBLE) == TYPE_DOUBLE ) {
|
||
35 | double value = ((Number) op1).doubleValue() + ((Number) op2).doubleValue(); |
||
36 | return value;
|
||
37 | } |
||
38 | if( (type & TYPE_FLOAT) == TYPE_FLOAT ) {
|
||
39 | double value = ((Number) op1).floatValue() + ((Number) op2).floatValue(); |
||
40 | return value;
|
||
41 | } |
||
42 | if( (type & TYPE_LONG) == TYPE_LONG ) {
|
||
43 | long value = ((Number) op1).longValue() + ((Number) op2).longValue(); |
||
44 | return value;
|
||
45 | } |
||
46 | if( (type & TYPE_INT) == TYPE_INT ) {
|
||
47 | int value = ((Number) op1).intValue()+ ((Number) op2).intValue(); |
||
48 | return value;
|
||
49 | } |
||
50 | 44191 | jjdelcerro | if( (type & TYPE_STRING) == TYPE_STRING ) {
|
51 | if( interpreter.isSQLCompatible() ) {
|
||
52 | throw new ExpressionRuntimeException( |
||
53 | null,
|
||
54 | "The '"+name()+"' operator can not be used with string operands", |
||
55 | I18N.Use_the_operator_CONCAT_to_concatenate_strings() |
||
56 | ); |
||
57 | } |
||
58 | return Objects.toString(op1, "")+Objects.toString(op2, ""); |
||
59 | } |
||
60 | 43512 | jjdelcerro | throw new IllegalArgumentException("Types not allowed in '"+name()+"' operand."); |
61 | } |
||
62 | 44010 | jjdelcerro | |
63 | @Override
|
||
64 | public Code optimize(Optimizer optimizer, Caller caller) {
|
||
65 | 44198 | jjdelcerro | Code op1 = optimizer.optimize(caller.parameters().get(0));
|
66 | Code op2 = optimizer.optimize(caller.parameters().get(1));
|
||
67 | 44010 | jjdelcerro | |
68 | if ( op1.code() == Code.CONSTANT && op2.code() == Code.CONSTANT) {
|
||
69 | Code newCode = optimizer.getCodeBuilder().constant( |
||
70 | call( |
||
71 | optimizer.getInterpreter(), |
||
72 | ((Constant)op1).value(), |
||
73 | ((Constant)op2).value() |
||
74 | ) |
||
75 | ); |
||
76 | return newCode;
|
||
77 | |||
78 | } else if ( op1.code() == Code.CONSTANT ) { |
||
79 | Object value = ((Constant)op1).value();
|
||
80 | if( value instanceof Number ) { |
||
81 | double n = ((Number) value).doubleValue(); |
||
82 | if( n == 0 ) { |
||
83 | return op2;
|
||
84 | } |
||
85 | } |
||
86 | Code newCode = optimizer.getCodeBuilder().operator(caller.name(), op1, op2); |
||
87 | return newCode;
|
||
88 | |||
89 | } else if ( op2.code() == Code.CONSTANT ) { |
||
90 | Object value = ((Code.Constant)op2).value();
|
||
91 | if( value instanceof Number ) { |
||
92 | double n = ((Number) value).doubleValue(); |
||
93 | if( n == 0 ) { |
||
94 | return op1;
|
||
95 | } |
||
96 | } |
||
97 | Code newCode = optimizer.getCodeBuilder().operator(caller.name(), op1, op2); |
||
98 | return newCode;
|
||
99 | } |
||
100 | |||
101 | return caller;
|
||
102 | } |
||
103 | 43512 | jjdelcerro | |
104 | } |