SequenceRequestComponent (OGSA-DAI -- (c) International Business Machines Corporation, 2002-2006, The University of Edinburgh, 2002-2006)

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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

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.