ChainFunction (hybris Commerce Suite 2011)

Type Parameters:

SOURCE_TYPE - the in-bound type of the function

TARGET_TYPE - the out-bound type of the function

All Superinterfaces:

java.util.function.Function<SOURCE_TYPE,java.util.Optional<TARGET_TYPE>>
```
public interface ChainFunction<SOURCE_TYPE,TARGET_TYPE>
extends java.util.function.Function<SOURCE_TYPE,java.util.Optional<TARGET_TYPE>>
```
Represents a function that will delegate its returned Optional-wrapped value to another ChainFunction if its own execution returns empty.
This is functional interface whose functional method is Function.apply(Object).

See Also:

Function

Method Summary

All Methods Instance Methods Default Methods
Modifier and Type	Method	Description
`default ChainFunction<SOURCE_TYPE,TARGET_TYPE>`	`orElse(ChainFunction<SOURCE_TYPE,TARGET_TYPE> orElse)`	Enablement of the chaining of a `ChainFunction` by specifying the delegation to another candidate at the orElse phase.

Methods inherited from interface java.util.function.Function
andThen, apply, compose

- Method Detail
  - orElse
```
default ChainFunction<SOURCE_TYPE,TARGET_TYPE> orElse(ChainFunction<SOURCE_TYPE,TARGET_TYPE> orElse)
```
    Enablement of the chaining of a ChainFunction by specifying the delegation to another candidate at the orElse phase.
    
    Parameters:
    
    orElse - a ChainFunction
    
    Returns:
    
    the function's result if it succeeds, otherwise the result of the orElse function