org.apache.poi.hssf.record.formula.functions
Class Count

java.lang.Object
  extended by org.apache.poi.hssf.record.formula.functions.Count
All Implemented Interfaces:
Function

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

Counts the number of cells that contain numeric data within the list of arguments. Excel Syntax COUNT(value1,value2,...) Value1, value2, ... are 1 to 30 arguments representing the values or ranges to be counted. TODO: Check this properly matches excel on edge cases like formula cells, error cells etc


Constructor Summary
Count()
           
 
Method Summary
 ValueEval evaluate(ValueEval[] args, int srcCellRow, int srcCellCol)
           
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

Count

public Count()
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.