org.apache.poi.ss.formula.atp.IfNa Maven / Gradle / Ivy
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this work for additional information regarding copyright ownership.
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(the "License"); you may not use this file except in compliance with
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package org.apache.poi.ss.formula.atp;
import org.apache.poi.ss.formula.OperationEvaluationContext;
import org.apache.poi.ss.formula.eval.ErrorEval;
import org.apache.poi.ss.formula.eval.EvaluationException;
import org.apache.poi.ss.formula.eval.OperandResolver;
import org.apache.poi.ss.formula.eval.ValueEval;
import org.apache.poi.ss.formula.functions.FreeRefFunction;
/**
* Implementation of 'Analysis Toolpak' the Excel function IFNA()
*
* Syntax:
* IFNA(test_value, default_value)
*
* test_value The value to be tested
* default_value The value to be tested
*
* Returns {@code default_value} if {@code test_value} is '#N/A', {@code test_value} otherwise.
*/
public final class IfNa implements FreeRefFunction {
public static final FreeRefFunction instance = new IfNa();
private IfNa() {
// Enforce singleton
}
public ValueEval evaluate(ValueEval[] args, OperationEvaluationContext ec) {
if (args.length != 2) {
return ErrorEval.VALUE_INVALID;
}
try {
return OperandResolver.getSingleValue(args[0], ec.getRowIndex(), ec.getColumnIndex());
} catch (EvaluationException e) {
ValueEval error = e.getErrorEval();
if (error != ErrorEval.NA) {
return error;
}
}
try {
return OperandResolver.getSingleValue(args[1], ec.getRowIndex(), ec.getColumnIndex());
} catch (EvaluationException e) {
return e.getErrorEval();
}
}
}