org.eclipse.smila.blackboard.impl
Class BlackboardFactoryImpl

java.lang.Object
  org.eclipse.smila.blackboard.impl.BlackboardFactoryImpl

All Implemented Interfaces:

BlackboardFactory

public class BlackboardFactoryImpl
extends java.lang.Object
implements BlackboardFactory

Author:

jschumacher

Constructor Summary

BlackboardFactoryImpl()

Method Summary

protected void	activate(ComponentContext context)
Blackboard	createBlackboard(boolean useRecordStorage, boolean useBinaryStorage) creates a blackboard.
Blackboard	createPersistingBlackboard() create a new persisting blackboard instance.
Blackboard	createTransientBlackboard() create a new non-persisting blackboard instance.
void	setBinaryStorage(BinaryStorageService binaryStorage) Set the binary service for blackboard.
void	setRecordStorage(RecordStorage recordStorage) Set the record service for blackboard.
void	unsetBinaryStorage(BinaryStorageService binaryStorage) Un-set the binary storage service.
void	unsetRecordStorage(RecordStorage recordStorage) Un-set the record storage service.

Methods inherited from class java.lang.Object

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

Constructor Detail

BlackboardFactoryImpl

public BlackboardFactoryImpl()

Method Detail

createBlackboard

public Blackboard createBlackboard(boolean useRecordStorage,
                                   boolean useBinaryStorage)
                            throws BlackboardAccessException

creates a blackboard.

Specified by:

createBlackboard in interface BlackboardFactory

Parameters:

useRecordStorage - if true, the records will be stored using the RecordStorage service.

useBinaryStorage - if true, the attachments will be stored using the BinaryStorage service.

Returns:

a blackboard with the desired storages attached to it.

Throws:

BlackboardAccessException - could not create the blackboard, or one of the desired services is not available.

createPersistingBlackboard

public Blackboard createPersistingBlackboard()
                                      throws BlackboardAccessException

create a new persisting blackboard instance. If a record storage is available, it will be used. The Blackboard uses a binary storage to store attachments.

Specified by:

createPersistingBlackboard in interface BlackboardFactory

Returns:

blackboard instance that does persist into storages.

Throws:

BlackboardAccessException - could not create the blackboard, or no binary storage service is available.

createTransientBlackboard

public Blackboard createTransientBlackboard()

create a new non-persisting blackboard instance. This method must always return a valid empty blackboard instance.

Specified by:

createTransientBlackboard in interface BlackboardFactory

Returns:

blackboard instance that does not persist into storages.

activate

protected void activate(ComponentContext context)

setRecordStorage

public void setRecordStorage(RecordStorage recordStorage)

Set the record service for blackboard. To be used by Declarative Services as the bind method.

Parameters:

recordStorage - RecordStorage - the record storage service interface

unsetRecordStorage

public void unsetRecordStorage(RecordStorage recordStorage)

Un-set the record storage service. To be used by Declarative Services as the un-bind method.

Parameters:

recordStorage - RecordStorage - the record storage service interface

setBinaryStorage

public void setBinaryStorage(BinaryStorageService binaryStorage)

Set the binary service for blackboard. To be used by Declarative Services as the bind method.

Parameters:

binaryStorage - BinaryStorageService - the binary storage service interface

unsetBinaryStorage

public void unsetBinaryStorage(BinaryStorageService binaryStorage)

Un-set the binary storage service. To be used by Declarative Services as the un-bind method.

Parameters:

binaryStorage - -