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 / EqOperator.java @ 45213
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| 1 | 43512 | jjdelcerro | package org.gvsig.expressionevaluator.impl.function.operator; |
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| 2 | |||
| 3 | 43521 | jjdelcerro | import org.apache.commons.math.util.MathUtils; |
| 4 | 44207 | jjdelcerro | import static org.gvsig.expressionevaluator.ExpressionBuilder.OPERATOR_EQ; |
| 5 | 43521 | jjdelcerro | import org.gvsig.expressionevaluator.Function; |
| 6 | import org.gvsig.expressionevaluator.Interpreter; |
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| 7 | |||
| 8 | 43512 | jjdelcerro | public class EqOperator extends AbstractBinaryOperator { |
| 9 | |||
| 10 | public EqOperator() {
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| 11 | 44207 | jjdelcerro | super(Function.GROUP_BOOLEAN, OPERATOR_EQ, true); |
| 12 | 43512 | jjdelcerro | } |
| 13 | 43521 | jjdelcerro | |
| 14 | 43512 | jjdelcerro | @Override
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| 15 | 44009 | jjdelcerro | public boolean allowConstantFolding() { |
| 16 | return true; |
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| 17 | } |
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| 18 | |||
| 19 | @Override
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| 20 | 43521 | jjdelcerro | public Object call(Interpreter interpreter, Object op1, Object op2) { |
| 21 | 44218 | jjdelcerro | if( op1==op2 ) {
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| 22 | return true; |
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| 23 | } |
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| 24 | 45041 | jjdelcerro | int type = this.getType(op1, op2); |
| 25 | if( (type & TYPE_NULL) == TYPE_NULL ) {
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| 26 | return op1==op2;
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| 27 | 44218 | jjdelcerro | } |
| 28 | 43531 | jjdelcerro | if( (type & TYPE_DOUBLE) == TYPE_DOUBLE ) {
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| 29 | 44855 | jjdelcerro | double accuracy = MathUtils.EPSILON;
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| 30 | if( interpreter.getAccuracy()!=null ) { |
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| 31 | accuracy = interpreter.getAccuracy(); |
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| 32 | } |
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| 33 | boolean value = MathUtils.compareTo(getDouble(op1, 1),getDouble(op2, 2),accuracy) == 0; |
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| 34 | 43531 | jjdelcerro | return value;
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| 35 | 43521 | jjdelcerro | } |
| 36 | 43531 | jjdelcerro | if( (type & TYPE_FLOAT) == TYPE_FLOAT ) {
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| 37 | 44855 | jjdelcerro | double accuracy = MathUtils.EPSILON;
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| 38 | if( interpreter.getAccuracy()!=null ) { |
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| 39 | accuracy = interpreter.getAccuracy(); |
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| 40 | } |
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| 41 | boolean value = MathUtils.compareTo(getFloat(op1, 1),getFloat(op2, 2),accuracy) == 0; |
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| 42 | 43531 | jjdelcerro | return value;
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| 43 | } |
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| 44 | 44243 | jjdelcerro | if( (type & TYPE_LONG) == TYPE_LONG ) {
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| 45 | 44855 | jjdelcerro | boolean value = Long.compare(getLong(op1, 1),getLong(op2, 2)) == 0; |
| 46 | 44243 | jjdelcerro | return value;
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| 47 | } |
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| 48 | if( (type & TYPE_INT) == TYPE_INT ) {
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| 49 | 44855 | jjdelcerro | boolean value = Integer.compare(getInt(op1, 1),getInt(op2, 2)) == 0; |
| 50 | 44243 | jjdelcerro | return value;
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| 51 | } |
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| 52 | 43512 | jjdelcerro | if( op2 instanceof Comparable && op2 instanceof Comparable ) { |
| 53 | 44855 | jjdelcerro | boolean value = getComparable(op1,1).compareTo(getComparable(op2,2)) == 0; |
| 54 | 43512 | jjdelcerro | return value;
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| 55 | } |
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| 56 | 43521 | jjdelcerro | throw new IllegalArgumentException("Types not allowed in '" + name() + "' operand."); |
| 57 | 43512 | jjdelcerro | } |
| 58 | |||
| 59 | } |