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

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

All Implemented Interfaces:

Function

public final class Counta
extends java.lang.Object
implements Function

Counts the number of cells that contain data within the list of arguments. Excel Syntax COUNTA(value1,value2,...) Value1, value2, ... are 1 to 30 arguments representing the values or ranges to be counted.

Author:

Josh Micich

Constructor Summary

Counta()

Method Summary

ValueEval	evaluate(ValueEval[] args, int srcCellRow, int srcCellCol)
static Counta	subtotalInstance()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Counta

public Counta()

Method Detail

evaluate

public ValueEval evaluate(ValueEval[] args,
                          int srcCellRow,
                          int srcCellCol)

Specified by:

evaluate in interface Function

Parameters:

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

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

srcCellCol - 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.

subtotalInstance

public static Counta subtotalInstance()