uk.org.ogsadai.engine.controlflow
Class SequenceRequestComponent

java.lang.Object
  |
  +--uk.org.ogsadai.engine.controlflow.CompositeRequestComponent
        |
        +--uk.org.ogsadai.engine.controlflow.SequenceRequestComponent

All Implemented Interfaces:

RequestComponent

public class SequenceRequestComponent

extends CompositeRequestComponent

implements RequestComponent

A composite RequestComponent that contains a number of child components which will be processed sequentially when the process method is invoked.

Author:

The OGSA-DAI Project Team

Field Summary

private static java.lang.String	COPYRIGHT_NOTICE Copyright statement.
private static DAILogger	LOG Logger object for logging in this class.
private java.lang.String	mName Unique name of this sequence request component.

Fields inherited from class uk.org.ogsadai.engine.controlflow.CompositeRequestComponent

Constructor Summary

SequenceRequestComponent(java.lang.String name)
Constructor

Method Summary

void	process(ActivityContext context, ResponseBuilder responseBuilder) Processes the component.
void	terminate() Terminates the processing of the request component.

Methods inherited from class uk.org.ogsadai.engine.controlflow.CompositeRequestComponent

add, children, generatesResultData, initialise

Methods inherited from class java.lang.Object

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

Methods inherited from interface uk.org.ogsadai.engine.controlflow.RequestComponent

add, children, generatesResultData, initialise

Field Detail

COPYRIGHT_NOTICE

private static final java.lang.String COPYRIGHT_NOTICE

Copyright statement.

See Also:

Constant Field Values

LOG

private static final DAILogger LOG

Logger object for logging in this class.

mName

private final java.lang.String mName

Unique name of this sequence request component.

Constructor Detail

SequenceRequestComponent

public SequenceRequestComponent(java.lang.String name)

Constructor

Parameters:

name - Unique name of this sequence request component.

Method Detail

process

public void process(ActivityContext context,
                    ResponseBuilder responseBuilder)
             throws RequestSpecificationException,
                    RequestExecutionException

Description copied from interface: RequestComponent

Processes the component. If this is a composite component, then any child components will be processed recursively. Wherever possible an implementation should be coded in such a way that the processing can be terminated prematurely by an invocation of the terminate method by another thread. Hence, when this method returns processing will be either complete or terminated.

Specified by:

process in interface RequestComponent

Parameters:

context - The context for the request

responseBuilder - The response builder for assembling the response document during processing

Throws:

RequestExecutionException - If a problem occurs during processing that is not caused by incorrect information in the request.

RequestSpecificationException - If there is a processing problem caused by incorrect information in the request.

terminate

public void terminate()

Description copied from interface: RequestComponent

Terminates the processing of the request component. When this method returns, any threads and other resources associated with the processing of this request must be finished with.

Specified by:

terminate in interface RequestComponent