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 / programming / IIFFunction.java @ 44924
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package org.gvsig.expressionevaluator.impl.function.programming; |
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import org.apache.commons.lang3.Range; |
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import org.gvsig.expressionevaluator.Codes; |
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import org.gvsig.expressionevaluator.Function; |
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import org.gvsig.expressionevaluator.Interpreter; |
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import org.gvsig.expressionevaluator.spi.AbstractFunction; |
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public class IIFFunction extends AbstractFunction { |
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public static final String NAME = "IFF"; |
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public IIFFunction() {
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super(Function.GROUP_BOOLEAN,
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NAME, |
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Range.between(2,3), |
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"The IFF() function tests a specified numeric expression and returns one of two values, based on whether the expression tested was true or false.",
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"IF {{condition}} THEN\n PASS\nELSE\n PASS;\nEND IF\n",
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null,
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"Object",
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true
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); |
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} |
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@Override
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public boolean useArgumentsInsteadObjects() { |
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return true; |
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} |
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@Override
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public boolean allowConstantFolding() { |
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return false; |
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} |
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@Override
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public Object call(Interpreter interpreter, Object[] args) throws Exception { |
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throw new UnsupportedOperationException("Not supported yet."); |
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} |
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@Override
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public Object call(Interpreter interpreter, Codes args) throws Exception { |
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Object value;
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boolean condition = getBoolean(interpreter, args, 0); |
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if( condition ) {
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value = getObject(interpreter, args, 1);
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} else {
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if( args.size()>2 && args.get(2)!=null ) { |
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value = getObject(interpreter, args, 2);
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} else {
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value = null;
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} |
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} |
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return value;
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} |
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} |