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

java.lang.Object
  extended by org.apache.poi.ss.formula.functions.Index
All Implemented Interfaces:
Function, Function2Arg, Function3Arg, Function4Arg
public final class Index
extends java.lang.Object
implements Function2Arg, Function3Arg, Function4Arg

Implementation for the Excel function INDEX

Syntax :
INDEX ( reference, row_num[, column_num [, area_num]])
INDEX ( array, row_num[, column_num])

referencetypically an area reference, possibly a union of areas
arraya literal array value (currently not supported)
row_numselects the row within the array or area reference
column_numselects column within the array or area reference. default is 1
area_numused when reference is a union of areas

Constructor Summary
Index()
           
 
Method Summary
 ValueEval evaluate(int srcRowIndex, int srcColumnIndex, ValueEval arg0, ValueEval arg1)
          see Function.evaluate(ValueEval[], int, int)
 ValueEval evaluate(int srcRowIndex, int srcColumnIndex, ValueEval arg0, ValueEval arg1, ValueEval arg2)
          see Function.evaluate(ValueEval[], int, int)
 ValueEval evaluate(int srcRowIndex, int srcColumnIndex, ValueEval arg0, ValueEval arg1, ValueEval arg2, ValueEval arg3)
          see Function.evaluate(ValueEval[], int, int)
 ValueEval evaluate(ValueEval[] args, int srcRowIndex, int srcColumnIndex)
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

Index

public Index()
Method Detail

evaluate

public ValueEval evaluate(int srcRowIndex,
                          int srcColumnIndex,
                          ValueEval arg0,
                          ValueEval arg1)
Description copied from interface: Function2Arg
see Function.evaluate(ValueEval[], int, int)

Specified by:
evaluate in interface Function2Arg

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)

Specified by:
evaluate in interface Function3Arg

evaluate

public ValueEval evaluate(int srcRowIndex,
                          int srcColumnIndex,
                          ValueEval arg0,
                          ValueEval arg1,
                          ValueEval arg2,
                          ValueEval arg3)
Description copied from interface: Function4Arg
see Function.evaluate(ValueEval[], int, int)

Specified by:
evaluate in interface Function4Arg

evaluate

public 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.
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