All Superinterfaces:

java.io.Serializable

All Known Implementing Classes:

AbsFunctionDescription, AbstractFunctionDescription, AcosFunctionDescription, AcoshFunctionDescription, AndFunctionDescription, AsinFunctionDescription, Atan2FunctionDescription, AtanFunctionDescription, AverageAFunctionDescription, AverageFunctionDescription, ChooseFunctionDescription, CosFunctionDescription, CountAFunctionDescription, CountBlankFunctionDescription, CountFunctionDescription, CsvArrayFunctionDescription, CsvTextFunctionDescription, DateDifFunctionDescription, DateFunctionDescription, DateValueFunctionDescription, DayFunctionDescription, DaysFunctionDescription, DefaultFunctionDescription, EvenFunctionDescription, ExactFunctionDescription, ExpFunctionDescription, FalseFunctionDescription, FindFunctionDescription, HasChangedFunctionDescription, HourFunctionDescription, IfFunctionDescription, IfNaFunctionDescription, IndexFunctionDescription, IntFunctionDescription, IsBlankFunctionDescription, IsErrFunctionDescription, IsErrorFunctionDescription, IsEvenFunctionDescription, IsLogicalFunctionDescription, IsNaFunctionDescription, IsNonTextFunctionDescription, IsNumberFunctionDescription, IsOddFunctionDescription, IsRefFunctionDescription, IsTextFunctionDescription, LeftFunctionDescription, LenFunctionDescription, LnFunctionDescription, Log10FunctionDescription, LogFunctionDescription, LowerFunctionDescription, MaxAFunctionDescription, MaxFunctionDescription, MessageFunctionDescription, MidFunctionDescription, MinAFunctionDescription, MinFunctionDescription, MinuteFunctionDescription, ModFunctionDescription, MonthFunctionDescription, NaFunctionDescription, NormalizeArrayFunctionDescription, NotFunctionDescription, NowFunctionDescription, NullFunctionDescription, OddFunctionDescription, OrFunctionDescription, ParseDateFunctionDescription, PiFunctionDescription, PowerFunctionDescription, ReplaceFunctionDescription, ReptFunctionDescription, RightFunctionDescription, SecondFunctionDescription, SinFunctionDescription, SqrtFunctionDescription, SubstituteFunctionDescription, SumAFunctionDescription, SumFunctionDescription, TextFunctionDescription, TFunctionDescription, TimeFunctionDescription, TimeValueFunctionDescription, TodayFunctionDescription, TrimFunctionDescription, TrueFunctionDescription, UnicharFunctionDescription, UnicodeFunctionDescription, UpperFunctionDescription, URLEncodeFunctionDescription, ValueFunctionDescription, VarFunctionDescription, WeekDayFunctionDescription, XorFunctionDescription, YearFunctionDescription
```
public interface FunctionDescription
extends java.io.Serializable
```
A static definition of the function's parameters, return values etc. This is a support class with emphasis on GUI tools. However, the parameter declarations are also used when filling in the parameter values. Functions have a defined set of known parameters and can have a unlimited number of optional parameters. If a function declares at least one parameter and declares that its parameter list is infinite, then the last parameter type is used on all remaining parameters.

Author:

Thomas Morgner

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`java.lang.String`	`getCanonicalName()`
`FunctionCategory`	`getCategory()`
`java.lang.Object`	`getDefaultValue(int position)`	Returns the default value for an optional parameter.
`java.lang.String`	`getDescription(java.util.Locale locale)`
`java.lang.String`	`getDisplayName(java.util.Locale locale)`
`int`	`getParameterCount()`
`java.lang.String`	`getParameterDescription(int position, java.util.Locale locale)`
`java.lang.String`	`getParameterDisplayName(int position, java.util.Locale locale)`
`Type`	`getParameterType(int position)`	Returns the parameter type at the given position using the function metadata.
`Type`	`getValueType()`
`boolean`	`isInfiniteParameterCount()`
`boolean`	`isParameterMandatory(int position)`	Defines, whether the parameter at the given position is mandatory.
`boolean`	`isVolatile()`

- Method Detail
  - getCanonicalName
```
java.lang.String getCanonicalName()
```
  - getDisplayName
```
java.lang.String getDisplayName(java.util.Locale locale)
```
  - getDescription
```
java.lang.String getDescription(java.util.Locale locale)
```
  - isVolatile
```
boolean isVolatile()
```
  - getValueType
```
Type getValueType()
```
  - getCategory
```
FunctionCategory getCategory()
```
  - getParameterCount
```
int getParameterCount()
```
  - isInfiniteParameterCount
```
boolean isInfiniteParameterCount()
```
  - getParameterType
```
Type getParameterType(int position)
```
    Returns the parameter type at the given position using the function metadata. The first parameter is at the position 0;
    
    Parameters:
    
    position - The parameter index.
    
    Returns:
    
    The parameter type.
  - getParameterDisplayName
```
java.lang.String getParameterDisplayName(int position,
                                         java.util.Locale locale)
```
  - getParameterDescription
```
java.lang.String getParameterDescription(int position,
                                         java.util.Locale locale)
```
  - isParameterMandatory
```
boolean isParameterMandatory(int position)
```
    Defines, whether the parameter at the given position is mandatory. A mandatory parameter must be filled in, while optional parameters need not to be filled in.
    
    Returns:
  - getDefaultValue
```
java.lang.Object getDefaultValue(int position)
```
    Returns the default value for an optional parameter. If the value returned here is null, then this either means, that the parameter is mandatory or that the default value is computed by the expression itself.
    
    Parameters:
    
    position -
    
    Returns:

Interface FunctionDescription

Method Summary

Method Detail

getCanonicalName

getDisplayName

getDescription

isVolatile

getValueType

getCategory

getParameterCount

isInfiniteParameterCount

getParameterType

getParameterDisplayName

getParameterDescription

isParameterMandatory

getDefaultValue