OverridableFunction (Keikai Spreadsheet Build 6.0.0 API)

java.lang.Object
- org.apache.poi.ss.formula.functions.OverridableFunction

All Implemented Interfaces:

Function
```
public class OverridableFunction
extends Object
implements Function
```
A Overridable function to provide the chance of override poi's basic functions

Author:

dennis

Constructor Summary

Constructors
Constructor Description

OverridableFunction(String name, Function original)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`ValueEval`	`evaluate(ValueEval[] args, int srcRowIndex, int srcColumnIndex)`
`ValueEval`	`evaluate(ValueEval[] args, int srcRowIndex, int srcColumnIndex, boolean isArrayValue)`
`String`	`getFunctionName()`
`boolean`	`isArrayFunction()`
`boolean`	`isArrayModeFunction()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - OverridableFunction
```
public OverridableFunction(String name,
                           Function original)
```
- Method Detail
  - 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.
  - evaluate
```
public ValueEval evaluate(ValueEval[] args,
                          int srcRowIndex,
                          int srcColumnIndex,
                          boolean isArrayValue)
```
  - isArrayFunction
```
public boolean isArrayFunction()
```
  - isArrayModeFunction
```
public boolean isArrayModeFunction()
```
  - getFunctionName
```
public String getFunctionName()
```