Function (Jackcess 5.0.2 API)

All Known Implementing Classes:

FunctionSupport.BaseFunction, FunctionSupport.Func0, FunctionSupport.Func1, FunctionSupport.Func1NullIsNull, FunctionSupport.Func2, FunctionSupport.Func3, FunctionSupport.FuncVar, FunctionSupport.StringFuncWrapper
```
public interface Function
```
A Function provides an invokable handle to external functionality to an expression.

Author:

James Ahlborn

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Value`	`eval(EvalContext ctx, Value... params)`	Evaluates this function within the given context with the given parameters.
`String`	`getName()`
`boolean`	`isPure()`

- Method Detail
  - getName
```
String getName()
```
    Returns:
    
    the name of this function
  - eval
```
Value eval(EvalContext ctx,
           Value... params)
```
    Evaluates this function within the given context with the given parameters.
    
    Returns:
    
    the result of the function evaluation
  - isPure
```
boolean isPure()
```
    Returns:
    
    true if this function is a "pure" function, false otherwise. A pure function will always return the same result for a given set of parameters and has no side effects.