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 @ 45041
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package org.gvsig.expressionevaluator.impl.function.operator; |
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import org.apache.commons.math.util.MathUtils; |
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import static org.gvsig.expressionevaluator.ExpressionBuilder.OPERATOR_EQ; |
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import org.gvsig.expressionevaluator.Function; |
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import org.gvsig.expressionevaluator.Interpreter; |
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public class EqOperator extends AbstractBinaryOperator { |
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public EqOperator() {
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super(Function.GROUP_BOOLEAN, OPERATOR_EQ, true); |
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} |
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@Override
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public boolean allowConstantFolding() { |
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return true; |
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} |
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@Override
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public Object call(Interpreter interpreter, Object op1, Object op2) { |
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if( op1==op2 ) {
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return true; |
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} |
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int type = this.getType(op1, op2); |
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if( (type & TYPE_NULL) == TYPE_NULL ) {
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return op1==op2;
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} |
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if( (type & TYPE_DOUBLE) == TYPE_DOUBLE ) {
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double accuracy = MathUtils.EPSILON;
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if( interpreter.getAccuracy()!=null ) { |
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accuracy = interpreter.getAccuracy(); |
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} |
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boolean value = MathUtils.compareTo(getDouble(op1, 1),getDouble(op2, 2),accuracy) == 0; |
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return value;
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} |
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if( (type & TYPE_FLOAT) == TYPE_FLOAT ) {
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double accuracy = MathUtils.EPSILON;
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if( interpreter.getAccuracy()!=null ) { |
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accuracy = interpreter.getAccuracy(); |
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} |
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boolean value = MathUtils.compareTo(getFloat(op1, 1),getFloat(op2, 2),accuracy) == 0; |
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return value;
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} |
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if( (type & TYPE_LONG) == TYPE_LONG ) {
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boolean value = Long.compare(getLong(op1, 1),getLong(op2, 2)) == 0; |
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return value;
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} |
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if( (type & TYPE_INT) == TYPE_INT ) {
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boolean value = Integer.compare(getInt(op1, 1),getInt(op2, 2)) == 0; |
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return value;
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} |
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if( op2 instanceof Comparable && op2 instanceof Comparable ) { |
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boolean value = getComparable(op1,1).compareTo(getComparable(op2,2)) == 0; |
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return value;
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} |
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throw new IllegalArgumentException("Types not allowed in '" + name() + "' operand."); |
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} |
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} |