uk.ac.ncl.cs.instantsoap.mapprocessor
Class MultiplexingMapProcessor

java.lang.Object
  uk.ac.ncl.cs.instantsoap.mapprocessor.MultiplexingMapProcessor

All Implemented Interfaces:

MapProcessor

public class MultiplexingMapProcessor
extends Object
implements MapProcessor

Multiplex over a set of map processors.

Incomming requests are routed through to the underlying processor that can handle that request. The requests taht this processor can handle is the union of those that all of the underlying processors can.

Author:

Matthew Pocock

Constructor Summary

MultiplexingMapProcessor()

MultiplexingMapProcessor(Set<MapProcessor> processors)
Create a new processor that multiplexes over the supplied processors.

Method Summary

void	deRegisterHandler(MapProcessor processor)
MetaData	describeApplication(String application) Describe an application.
Set<MetaData>	getInputs(String application) Get the inputs assocaited with an application.
Set<MetaData>	getOutputs(String application) Get the outputs assocaited with an application.
boolean	handlesApplication(String application) Indicates if this processor can handle applications with a particuar name.
List<String>	listApplications() List all of the applications handled, by name.
Map<String,String>	process(String application, Map<String,String> inputs) Handle a request.
void	registerHandler(MapProcessor processor)
void	validate(String application, Map<String,String> inputs) Validate the inputs for the application.

Methods inherited from class java.lang.Object

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

Constructor Detail

MultiplexingMapProcessor

public MultiplexingMapProcessor(Set<MapProcessor> processors)

Create a new processor that multiplexes over the supplied processors.

Parameters:

processors - the Set of MapProcessor instances that will be used to handle requests

MultiplexingMapProcessor

public MultiplexingMapProcessor()

Method Detail

registerHandler

public void registerHandler(MapProcessor processor)

deRegisterHandler

public void deRegisterHandler(MapProcessor processor)

handlesApplication

public boolean handlesApplication(String application)

Description copied from interface: MapProcessor

Indicates if this processor can handle applications with a particuar name.

This must return true for exactly those application names listed in listApplicaionts.

Specified by:

handlesApplication in interface MapProcessor

Parameters:

application - the name of the application to be checked

Returns:

true if the application can be handled, false otherwise

listApplications

public List<String> listApplications()

Description copied from interface: MapProcessor

List all of the applications handled, by name.

Specified by:

listApplications in interface MapProcessor

Returns:

the List of handled applications

describeApplication

public MetaData describeApplication(String application)
                             throws UnknownApplicationException

Description copied from interface: MapProcessor

Describe an application.

Specified by:

describeApplication in interface MapProcessor

Parameters:

application - the name of the application

Returns:

the MetaData with the name matching application providing the description and semantic annotation for this application

Throws:

UnknownApplicationException

process

public Map<String,String> process(String application,
                                  Map<String,String> inputs)
                           throws JobExecutionException,
                                  UnknownApplicationException

Description copied from interface: MapProcessor

Handle a request.

Specified by:

process in interface MapProcessor

Parameters:

application - the name of the application

inputs - the input Map

Returns:

the result of processing the request

Throws:

JobExecutionException

UnknownApplicationException

validate

public void validate(String application,
                     Map<String,String> inputs)
              throws InvalidJobSpecificationException,
                     UnknownApplicationException

Description copied from interface: MapProcessor

Validate the inputs for the application.

Specified by:

validate in interface MapProcessor

Parameters:

application - the name of the application

inputs - the Map of input values

Throws:

InvalidJobSpecificationException

UnknownApplicationException

getInputs

public Set<MetaData> getInputs(String application)
                        throws UnknownApplicationException

Description copied from interface: MapProcessor

Get the inputs assocaited with an application.

Specified by:

getInputs in interface MapProcessor

Parameters:

application - the name of the application

Returns:

the application inputs as a Set of MetaData instances

Throws:

UnknownApplicationException

getOutputs

public Set<MetaData> getOutputs(String application)
                         throws UnknownApplicationException

Description copied from interface: MapProcessor

Get the outputs assocaited with an application.

Specified by:

getOutputs in interface MapProcessor

Parameters:

application - the name of the application

Returns:

the application outputs as a Set of MetaData instances

Throws:

UnknownApplicationException