org.apache.poi.ss.formula.functions
Class Vlookup

java.lang.Object
  org.apache.poi.ss.formula.functions.Vlookup

All Implemented Interfaces:

Function, Function3Arg, Function4Arg

public final class Vlookup
extends java.lang.Object

Implementation of the VLOOKUP() function.

VLOOKUP finds a row in a lookup table by the first column value and returns the value from another column.
Syntax:
VLOOKUP(lookup_value, table_array, col_index_num, range_lookup)

lookup_value The value to be found in the first column of the table array.
table_array An area reference for the lookup data.
col_index_num a 1 based index specifying which column value of the lookup data will be returned.
range_lookup If TRUE (default), VLOOKUP finds the largest value less than or equal to the lookup_value. If FALSE, only exact matches will be considered

Vlookup

public Vlookup()

evaluate

public ValueEval evaluate(int srcRowIndex,
                          int srcColumnIndex,
                          ValueEval arg0,
                          ValueEval arg1,
                          ValueEval arg2)

Description copied from interface: Function3Arg

see Function.evaluate(ValueEval[], int, int)

evaluate

public ValueEval evaluate(int srcRowIndex,
                          int srcColumnIndex,
                          ValueEval lookup_value,
                          ValueEval table_array,
                          ValueEval col_index,
                          ValueEval range_lookup)

Description copied from interface: Function4Arg

see Function.evaluate(ValueEval[], int, int)

evaluate

public final ValueEval evaluate(ValueEval[] args,
                                int srcRowIndex,
                                int srcColumnIndex)

Specified by:

evaluate in interface Function

Parameters:

args - the evaluated function arguments. Empty values are represented with BlankEval or MissingArgEval, never null.

srcRowIndex - row index of the cell containing the formula under evaluation

srcColumnIndex - column index of the cell containing the formula under evaluation

Returns:

The evaluated result, possibly an ErrorEval, never null. Note - Excel uses the error code #NUM! instead of IEEE NaN, so when numeric functions evaluate to Double.NaN be sure to translate the result to ErrorEval.NUM_ERROR.