org.apache.poi.hssf.record.formula.functions
Class Fixed2ArgFunction

java.lang.Object
  extended by org.apache.poi.hssf.record.formula.functions.Fixed2ArgFunction
All Implemented Interfaces:
Function, Function2Arg
Direct Known Subclasses:
ConcatEval, Countif, IntersectionEval, NumericFunction.TwoArg, RangeEval, RelationalOperationEval, TwoOperandNumericOperation, XYNumericFunction

public abstract class Fixed2ArgFunction
extends java.lang.Object
implements Function2Arg

Convenience base class for functions that must take exactly two arguments.

Author:
Josh Micich

Constructor Summary
Fixed2ArgFunction()
           
 
Method Summary
 ValueEval evaluate(ValueEval[] args, int srcRowIndex, int srcColumnIndex)
           
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 
Methods inherited from interface org.apache.poi.hssf.record.formula.functions.Function2Arg
evaluate
 

Constructor Detail

Fixed2ArgFunction

public Fixed2ArgFunction()
Method Detail

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.