org.gcube.data.streams.generators
Interface Generator<E1,E2>

Type Parameters:

E1 - the type of elements in the input stream

E2 - the type of elements in the output stream

All Known Implementing Classes:

Filter, LoggingListener, NoOpGenerator, Processor

public interface Generator<E1,E2>

Yields elements of a Stream from elements of another Stream.

Author:

Fabio Simeoni

See Also:

Stream

Method Summary

E2	yield(E1 element) Yields an element of a Stream from an element of another Stream.

Method Detail

yield

E2 yield(E1 element)
         throws StreamSkipException,
                StreamContingencyException

Yields an element of a Stream from an element of another Stream.

Parameters:

element - the input element

Returns:

the output element

Throws:

StreamSkipException - if no element should be yielded from the input element

StreamContingencyException - if no element can be yielded, because the input element violates pre-conditions

RuntimeException - if no element can be yielded from the input element, becuase of an unrecoverable condition