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