Package de.uni_trier.wi2.procake.retrieval

Class RetrievalFactory

java.lang.Object

de.uni_trier.wi2.procake.retrieval.RetrievalFactory

All Implemented Interfaces:

Factory

public class RetrievalFactory
extends Object
implements Factory

This factory creates several retriever instances. Several SystemRetrievers are available.

Author:

Rainer Maximini

See Also:

• SystemRetrievers

Method Summary

Modifier and Type	Method	Description
static boolean	bind(RetrievalFactoryObject implementation)	add a retriever implementation to the retriever factory
boolean	bind(Object implementation)	Bind an implementation to the factory.
static AbstractMACFACRetriever	createMACFACRetriever(Retriever<DataObject,Query> macRetriever, Retriever<DataObject,Query> facRetriever)	Creates a new MAC/FAC retriever that is composed of the given MAC retriever and the given FAC retriever.
static List<String>	getAvailableRetrieverNames()
static Retriever<? extends DataObject,? extends Query>	newRetriever(String retrieverName)	Creates a new retriever of the specified name.
void	reset()	This method has to be implemented by every factory in order to allow a proper restart of ProCAKE.
static boolean	unbind(RetrievalFactoryObject implementation)	remove a retriever implementation from the retriever factory
boolean	unbind(Object implementation)	Unbinds an implementation from the factory.

Methods inherited from class java.lang.Object

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

Methods inherited from interface de.uni_trier.wi2.procake.utils.composition.Factory

addParameter, postInit

Method Details

bind

public static boolean bind(RetrievalFactoryObject implementation)

add a retriever implementation to the retriever factory

Parameters:

implementation - retriever

getAvailableRetrieverNames

public static List<String> getAvailableRetrieverNames()

Returns:

Returns a list of the names of all available retrievers.

newRetriever

public static Retriever<? extends DataObject,? extends Query> newRetriever(String retrieverName)

Creates a new retriever of the specified name.

Parameters:

retrieverName - The name of the retriever.

Returns:

Returns a new retriever for the specified name.

createMACFACRetriever

public static AbstractMACFACRetriever createMACFACRetriever(Retriever<DataObject,Query> macRetriever,
 Retriever<DataObject,Query> facRetriever)

Creates a new MAC/FAC retriever that is composed of the given MAC retriever and the given FAC retriever.

Parameters:

macRetriever - an instance of Retriever that performs the MAC phase

facRetriever - an instance of Retriever that performs the FAC phase

Returns:

the composed MAC/FAC retriever instance

unbind

public static boolean unbind(RetrievalFactoryObject implementation)

remove a retriever implementation from the retriever factory

Parameters:

implementation - retriever

reset

public void reset()

Description copied from interface: Factory

This method has to be implemented by every factory in order to allow a proper restart of ProCAKE. For example, this method might reset the default factory object or other stateful variables.

Specified by:

reset in interface Factory

bind

public boolean bind(Object implementation)

Description copied from interface: Factory

Bind an implementation to the factory.

Specified by:

bind in interface Factory

Parameters:

implementation - The object to bind.

Returns:

true if the factory accept the implementation, otherwise false .

See Also:

• Factory.bind(java.lang.Object)

unbind

public boolean unbind(Object implementation)

Description copied from interface: Factory

Unbinds an implementation from the factory.

Specified by:

unbind in interface Factory

Parameters:

implementation - The object to unbind.

Returns:

true if the factory accept the implementation, otherwise false .

See Also:

• Factory.unbind(java.lang.Object)