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.