org.gcube.common.core.utils.handlers
Class GCUBEHandlerConnector<T,PREVIOUS extends GCUBEIHandler<? extends T>,NEXT extends GCUBEIHandler<? extends T>>

java.lang.Object
  org.gcube.common.core.utils.handlers.GCUBEHandler<T>
      org.gcube.common.core.utils.handlers.GCUBEHandlerConnector<T,PREVIOUS,NEXT>

Type Parameters:

PREVIOUS - the type of component handler which immediately precedes the connector.

NEXT - the type of component handler which immediately follows the connector.

All Implemented Interfaces:

GCUBEIHandler<T>

public abstract class GCUBEHandlerConnector<T,PREVIOUS extends GCUBEIHandler<? extends T>,NEXT extends GCUBEIHandler<? extends T>>
extends GCUBEHandler<T>

Abstract implementation of component handlers used to connect the output of those which immediately precede them with the input of those which immediately follow them.

Author:

Fabio Simeoni (University of Strathclyde)

Field Summary

protected NEXT	next The component handler which follows the connector.
protected PREVIOUS	previous The component handler which precedes the connector.

Fields inherited from class org.gcube.common.core.utils.handlers.GCUBEHandler

handled, logger, producer

Constructor Summary

GCUBEHandlerConnector()

Method Summary

abstract void	connect() Invoked by {run(), defines the connections between the {previous and the {next component handlers.
NEXT	getNext() Return the component handler which follows the connector.
PREVIOUS	getPrevious() Return the component handler which precedes the connector.
void	run() Executes the task implemented by the handler.

Methods inherited from class org.gcube.common.core.utils.handlers.GCUBEHandler

clearBlackboard, getBlackboard, getHandled, getId, getLogger, getName, getScopeManager, getSecurityManager, getState, notify, setBlackboard, setHandled, setLogger, setName, setScopeManager, setSecurityManager, setState, subscribe, undo, unsubscribe

Methods inherited from class java.lang.Object

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

Field Detail

previous

protected PREVIOUS extends GCUBEIHandler<? extends T> previous

The component handler which precedes the connector.

next

protected NEXT extends GCUBEIHandler<? extends T> next

The component handler which follows the connector.

Constructor Detail

GCUBEHandlerConnector

public GCUBEHandlerConnector()

Method Detail

getPrevious

public PREVIOUS getPrevious()

Return the component handler which precedes the connector.

Returns:

the component handler.

getNext

public NEXT getNext()

Return the component handler which follows the connector.

Returns:

the component handler.

run

public final void run()
               throws Exception

Executes the task implemented by the handler.

Specified by:

run in interface GCUBEIHandler<T>

Specified by:

run in class GCUBEHandler<T>

Throws:

Exception - if the execution of the task does not complete normally.

connect

public abstract void connect()
                      throws Exception

Invoked by {run(), defines the connections between the {previous and the {next component handlers. Implement to define specific connections.

Throws:

Exception