Class Lookup
java.lang.Object
org.apache.poi.ss.formula.functions.Lookup
- All Implemented Interfaces:
Function
,Function2Arg
,Function3Arg
Implementation of Excel function LOOKUP.
LOOKUP finds an index row in a lookup table by the first column value and returns the value from another column.
Syntax:
VLOOKUP(lookup_value, lookup_vector, result_vector)
lookup_value The value to be found in the lookup vector.
lookup_vector</> An area reference for the lookup data.
result_vector Single row or single column area reference from which the result value is chosen.
- Author:
- Josh Micich
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Constructor Summary
Constructors -
Method Summary
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Constructor Details
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Lookup
public Lookup()
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Method Details
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evaluate
Description copied from interface:Function2Arg
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evaluate
public ValueEval evaluate(int srcRowIndex, int srcColumnIndex, ValueEval arg0, ValueEval arg1, ValueEval arg2) Description copied from interface:Function3Arg
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evaluate
- Specified by:
evaluate
in interfaceFunction
- Parameters:
args
- the evaluated function arguments. Empty values are represented withBlankEval
orMissingArgEval
, nevernull
.srcRowIndex
- row index of the cell containing the formula under evaluationsrcColumnIndex
- column index of the cell containing the formula under evaluation- Returns:
- The evaluated result, possibly an
ErrorEval
, nevernull
. Note - Excel uses the error code #NUM! instead of IEEE NaN, so when numeric functions evaluate toDouble.NaN
be sure to translate the result toErrorEval.NUM_ERROR
.
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