net.ssehub.easy.reasoning.core.impl

Class ReasonerRegistry

java.lang.Object

net.ssehub.easy.reasoning.core.impl.ReasonerRegistry

All Implemented Interfaces:

IReasonerRegistry

public class ReasonerRegistry
extends java.lang.Object
implements IReasonerRegistry

A class for registering installed reasoners.

Author:

Patrick Jähne, Holger Eichelberger

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.ArrayList<IMessageListener>	listener
private java.util.ArrayList<IReasoner>	reasoner
private static ReasonerRegistry	reasonerRegistry

Constructor Summary

Constructors

Modifier	Constructor and Description
private	ReasonerRegistry() Avoids multiple instantiation of this singleton class.

Method Summary

Modifier and Type	Method and Description
IReasoner	findReasoner(ReasonerDescriptor descriptor) Returns the reasoner which provides the given descriptor.
IReasoner	findReasoner(java.lang.String name, java.lang.String version) Returns the first version with given name and version.
static ReasonerRegistry	getInstance() Singleton access for this class.
IReasoner	getReasoner(int index) Returns the IReasoner at the specified position in this list.
int	getReasonerCount() Returns the number of registered reasoners.
void	notifyAllReasoners(IReasoner source, IReasonerMessage.IType type) Notifies all reasoners about a given event.
void	register(IMessageListener listener) Registers a message listener.
void	register(IReasoner reasoner) Adds a new Reasoner to the registry.
void	unregister(IMessageListener listener) Unregisters a message listener.
void	unregister(IReasoner reasoner) Removes the specified reasoner from the registry, if the reasoner was added before.

Methods inherited from class java.lang.Object

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

Field Detail

reasonerRegistry

private static ReasonerRegistry reasonerRegistry

reasoner

private java.util.ArrayList<IReasoner> reasoner

listener

private java.util.ArrayList<IMessageListener> listener

Constructor Detail

ReasonerRegistry

private ReasonerRegistry()

Avoids multiple instantiation of this singleton class.

Method Detail

getInstance

public static ReasonerRegistry getInstance()

Singleton access for this class.

Returns:

The singleton instance of this class.

register

public void register(IReasoner reasoner)

Description copied from interface: IReasonerRegistry

Adds a new Reasoner to the registry.

Specified by:

register in interface IReasonerRegistry

Parameters:

reasoner - The Reasoner which should be added to the registry.

unregister

public void unregister(IReasoner reasoner)

Description copied from interface: IReasonerRegistry

Removes the specified reasoner from the registry, if the reasoner was added before.

Specified by:

unregister in interface IReasonerRegistry

Parameters:

reasoner - The reasoner which should be removed from the registry.

register

public void register(IMessageListener listener)

Registers a message listener.

Parameters:

listener - the listener to register

unregister

public void unregister(IMessageListener listener)

Unregisters a message listener.

Parameters:

listener - the listener to unregister

notifyAllReasoners

public void notifyAllReasoners(IReasoner source,
                               IReasonerMessage.IType type)

Description copied from interface: IReasonerRegistry

Notifies all reasoners about a given event.

Specified by:

notifyAllReasoners in interface IReasonerRegistry

Parameters:

source - the reasoner causing the event

type - the type of the event

getReasonerCount

public int getReasonerCount()

Returns the number of registered reasoners.

Returns:

The number of reasoners registered to this registry

getReasoner

public IReasoner getReasoner(int index)

Returns the IReasoner at the specified position in this list.

Parameters:

index - index of the IReasoner to return

Returns:

IReasoner at the specified position in this list

Throws:

java.lang.IndexOutOfBoundsException - if the index is out of range (index < 0 || index >= getReasonerCount() )

findReasoner

public IReasoner findReasoner(ReasonerDescriptor descriptor)

Returns the reasoner which provides the given descriptor.

Parameters:

descriptor - the descriptor to search for

Returns:

the reasoner or null if none matches

findReasoner

public IReasoner findReasoner(java.lang.String name,
                              java.lang.String version)

Returns the first version with given name and version.

Parameters:

name - the name of the reasoner as given in its descriptor

version - the version of the reasoner as given in its descriptor (ignored if null)

Returns:

the first reasoner matching the criteria or null