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 @ 46505
History | View | Annotate | Download (4.05 KB)
1 |
package org.gvsig.expressionevaluator.impl.function.operator; |
---|---|
2 |
|
3 |
import java.math.BigDecimal; |
4 |
import java.util.Objects; |
5 |
import org.apache.commons.math.exception.OutOfRangeException; |
6 |
import org.gvsig.expressionevaluator.Code; |
7 |
import org.gvsig.expressionevaluator.Code.Constant; |
8 |
import static org.gvsig.expressionevaluator.ExpressionBuilder.OPERATOR_ADD; |
9 |
import org.gvsig.expressionevaluator.ExpressionRuntimeException; |
10 |
import org.gvsig.expressionevaluator.Function; |
11 |
import org.gvsig.expressionevaluator.Interpreter; |
12 |
import org.gvsig.expressionevaluator.Optimizer; |
13 |
import org.gvsig.expressionevaluator.Optimizer.FunctionOptimizer; |
14 |
import org.gvsig.expressionevaluator.impl.I18N; |
15 |
import org.gvsig.expressionevaluator.Code.Callable; |
16 |
|
17 |
public class AddOperator |
18 |
extends AbstractBinaryOperator
|
19 |
implements FunctionOptimizer
|
20 |
{ |
21 |
|
22 |
|
23 |
public AddOperator() {
|
24 |
super(Function.GROUP_NUMERIC, OPERATOR_ADD, true); |
25 |
} |
26 |
|
27 |
@Override
|
28 |
public boolean allowConstantFolding() { |
29 |
return true; |
30 |
} |
31 |
|
32 |
@Override
|
33 |
public Object call(Interpreter interpreter, Object op1, Object op2) { |
34 |
if (op1 == null || op2 == null) { |
35 |
return null; |
36 |
} |
37 |
int type = this.getType(op1, op2); |
38 |
if( (type & TYPE_BIGDECIMAL) == TYPE_BIGDECIMAL ) {
|
39 |
BigDecimal value = getBigDecimal(op1,1).add(getBigDecimal(op2,2)); |
40 |
return value;
|
41 |
} |
42 |
if( (type & TYPE_DOUBLE) == TYPE_DOUBLE ) {
|
43 |
double value = getDouble(op1,1) + getDouble(op2,2); |
44 |
checkDoubleValue(value); |
45 |
return value;
|
46 |
} |
47 |
if( (type & TYPE_FLOAT) == TYPE_FLOAT ) {
|
48 |
double value = getFloat(op1,1) + getFloat(op2,2); |
49 |
checkDoubleValue(value); |
50 |
return value;
|
51 |
} |
52 |
if( (type & TYPE_LONG) == TYPE_LONG ) {
|
53 |
long value = getLong(op1,1) + getLong(op2,2); |
54 |
return value;
|
55 |
} |
56 |
if( (type & TYPE_INT) == TYPE_INT ) {
|
57 |
int value = getInt(op1,1) + getInt(op2,2); |
58 |
return value;
|
59 |
} |
60 |
if( (type & TYPE_STRING) == TYPE_STRING ) {
|
61 |
if( interpreter.isSQLCompatible() ) {
|
62 |
throw new ExpressionRuntimeException( |
63 |
null,
|
64 |
"The '"+name()+"' operator can not be used with string operands", |
65 |
I18N.Use_the_operator_CONCAT_to_concatenate_strings() |
66 |
); |
67 |
} |
68 |
return Objects.toString(op1, "")+Objects.toString(op2, ""); |
69 |
} |
70 |
throw new IllegalArgumentException("Types not allowed in '"+name()+"' operand."); |
71 |
} |
72 |
|
73 |
@Override
|
74 |
public Code optimize(Optimizer optimizer, Callable caller) { |
75 |
Code op1 = optimizer.optimize(caller.parameters().get(0));
|
76 |
Code op2 = optimizer.optimize(caller.parameters().get(1));
|
77 |
|
78 |
if ( op1.code() == Code.CONSTANT && op2.code() == Code.CONSTANT) {
|
79 |
Code newCode = optimizer.getCodeBuilder().constant( |
80 |
call( |
81 |
optimizer.getInterpreter(), |
82 |
((Constant)op1).value(), |
83 |
((Constant)op2).value() |
84 |
) |
85 |
); |
86 |
return newCode;
|
87 |
|
88 |
} else if ( op1.code() == Code.CONSTANT ) { |
89 |
Object value = ((Constant)op1).value();
|
90 |
if( value instanceof Number ) { |
91 |
double n = ((Number) value).doubleValue(); |
92 |
if( n == 0 ) { |
93 |
return op2;
|
94 |
} |
95 |
} |
96 |
Code newCode = optimizer.getCodeBuilder().operator(caller.name(), op1, op2); |
97 |
return newCode;
|
98 |
|
99 |
} else if ( op2.code() == Code.CONSTANT ) { |
100 |
Object value = ((Code.Constant)op2).value();
|
101 |
if( value instanceof Number ) { |
102 |
double n = ((Number) value).doubleValue(); |
103 |
if( n == 0 ) { |
104 |
return op1;
|
105 |
} |
106 |
} |
107 |
Code newCode = optimizer.getCodeBuilder().operator(caller.name(), op1, op2); |
108 |
return newCode;
|
109 |
} |
110 |
|
111 |
return caller;
|
112 |
} |
113 |
|
114 |
} |