com.opensymphony.xwork2.inject.util
Interface Function<F,T>


public interface Function<F,T>

A Function provides a transformation on an object and returns the resulting object. For example, a StringToIntegerFunction may implement Function<String,Integer> and transform integers in String format to Integer format.

The transformation on the source object does not necessarily result in an object of a different type. For example, a FarenheitToCelciusFunction may implement Function<Float,Float>.

Implementors of Function which may cause side effects upon evaluation are strongly encouraged to state this fact clearly in their API documentation.


Method Summary
 T apply(F from)
          Applies the function to an object of type F, resulting in an object of type T.
 

Method Detail

apply

T apply(F from)
Applies the function to an object of type F, resulting in an object of type T. Note that types F and T may or may not be the same.

Parameters:
from - The source object.
Returns:
The resulting object.


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