org.streamingpool.core.service.streamfactory

Class DerivedStreamFactory

java.lang.Object

org.streamingpool.core.service.streamfactory.DerivedStreamFactory

All Implemented Interfaces:

StreamFactory

public class DerivedStreamFactory
extends java.lang.Object
implements StreamFactory

Constructor Summary

Constructors

Constructor and Description
DerivedStreamFactory()

Method Summary

Modifier and Type	Method and Description
<T> ErrorStreamPair<T>	create(StreamId<T> id, DiscoveryService discoveryService) Given an implementation of StreamId and a DiscoveryService this method creates a Publisher.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DerivedStreamFactory

public DerivedStreamFactory()

Method Detail

create

public <T> ErrorStreamPair<T> create(StreamId<T> id,
                                     DiscoveryService discoveryService)

Description copied from interface: StreamFactory

Given an implementation of StreamId and a DiscoveryService this method creates a Publisher. The provided DiscoveryService can be used to discover other streams that are needed in the creation process (stream combination, transformation, etc.)

NOTE: it is strongly discouraged the use of multiple threads inside this method (see TypedStreamFactory documentation).

Specified by:

create in interface StreamFactory

Parameters:

id - the id of the stream to create

discoveryService - DiscoveryService which can be used by the factory to look up other streams ('upstream' of the one it will create)

Returns:

the newly created stream or null if this factory cannot create the stream of the given id