org.apache.commons.pipeline.util
Interface KeyFactory<T,K>

All Known Implementing Classes:

KeyFactory.HashKeyFactory

public interface KeyFactory<T,K>

An implementation of this interface should define a strategy that will allow a unique identifier to be generated for an object. This identifier may be mutually comparable with identifiers generated for a different object type; it is used to permit signalling between drivers in separate pipeline branches.

Nested Class Summary

static class

KeyFactory.HashKeyFactory Trivial key factory that produces the object's hash code as a key.

Method Summary

K	generateKey(T source) Generates a unique identifier of type K for an object of type T.

Method Detail

generateKey

K generateKey(T source)

Generates a unique identifier of type K for an object of type T.

Returns:

the newly created identifier