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 / AndOperator.java @ 45307
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package org.gvsig.expressionevaluator.impl.function.operator; |
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import static org.gvsig.expressionevaluator.ExpressionBuilder.OPERATOR_AND; |
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import org.gvsig.expressionevaluator.Function; |
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import org.gvsig.expressionevaluator.Interpreter; |
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public class AndOperator extends AbstractBinaryOperator { |
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public AndOperator() {
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super(Function.GROUP_BOOLEAN, OPERATOR_AND, 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 instanceof Boolean && op2 instanceof Boolean ) { |
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boolean value = getBoolean(op1,1) && getBoolean(op2,2); |
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return value;
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} |
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if (op1==null && op2==null) { |
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return null; |
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} else if (op1==null||op2==null) { |
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Boolean boolValue = null; |
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if (op2 == null && op1 instanceof Boolean) { |
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boolValue = getBoolean(op1,1);
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} else if (op1 == null && op2 instanceof Boolean){ |
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boolValue = getBoolean(op2,2);
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} |
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if (boolValue==null || boolValue==true) { |
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return null; |
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} else {
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return false; |
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} |
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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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} |