org.gcube.indexmanagement.storagehandling

Class DeltaFileConsumer

java.lang.Object

org.gcube.indexmanagement.storagehandling.DeltaFileConsumer

public class DeltaFileConsumer
extends Object

This class implements a consumer for delta files that make up an index. Each time a new delta file is added to the index, the DeltaFileConsumer fetches it from the Content Management layer and stores it locally.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	DeltaFileConsumer.AdditionConsumerNotification Class that handles the consuming of received addition notifications
class	DeltaFileConsumer.DeletionConsumerNotification Class that handles the consuming of received deletion notifications
class	DeltaFileConsumer.ManagerCreationConsumerNotification Class that handles the consuming of received manager creation notifications
class	DeltaFileConsumer.RemovalConsumerNotification Class that handles the consuming of received deletion notifications

Constructor Summary

Constructors

Constructor and Description
DeltaFileConsumer() Constructs a new, empty (uninitialized) DeltaFileConsumer
DeltaFileConsumer(org.gcube.indexmanagement.common.IndexLookupWSResource resource, IndexReplicator replicator, int startIdx) Constructs a new DeltaFileConsumer

Method Summary

Methods

Modifier and Type	Method and Description
void	close() Closes the DeltaFileConsumer
void	loadState(ObjectInputStream ois, boolean firstLoad, org.gcube.indexmanagement.common.IndexLookupWSResource resource, IndexReplicator replicator, int startIdx) Loads the current state of this DeltaFileConsumer from an object stream.
void	setDoesHandleAdditions(boolean doesHandleAdditions) Enables or disables delta file addition notification handling
void	setDoesHandleDeletions(boolean doesHandleDeletions) Enables or disables delta file deletion notification handling
void	setEnforceStrictOrder(boolean enforceStrictOrder) Enables or disables enforcement of strict ordering
void	storeState(ObjectOutputStream oos) Stores the current state of this DeltaFileConsumer to an object stream.

Methods inherited from class java.lang.Object

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

Constructor Detail

DeltaFileConsumer

public DeltaFileConsumer()

Constructs a new, empty (uninitialized) DeltaFileConsumer

DeltaFileConsumer

public DeltaFileConsumer(org.gcube.indexmanagement.common.IndexLookupWSResource resource,
                 IndexReplicator replicator,
                 int startIdx)
                  throws Exception

Constructs a new DeltaFileConsumer

Parameters:

resource - the index lookup resource that uses this DeltaFileConsumer

replicator - the index replicator to use

startIdx - the index of the first delta file

Throws:

Exception - an error occured

Method Detail

storeState

public void storeState(ObjectOutputStream oos)

Stores the current state of this DeltaFileConsumer to an object stream.

Parameters:

oos - the output stream

loadState

public void loadState(ObjectInputStream ois,
             boolean firstLoad,
             org.gcube.indexmanagement.common.IndexLookupWSResource resource,
             IndexReplicator replicator,
             int startIdx)
               throws Exception

Loads the current state of this DeltaFileConsumer from an object stream.

Parameters:

ois - the input stream

firstLoad - specifies whether this resource is being loaded for the first time or not

resource - the index lookup resource that uses this DeltaFileConsumer

replicator - the index replicator to use

startIdx - the index of the first delta file

Throws:

Exception

setDoesHandleAdditions

public void setDoesHandleAdditions(boolean doesHandleAdditions)
                            throws Exception

Enables or disables delta file addition notification handling

Parameters:

doesHandleAdditions - specifies whether delta file addition notifications should be handled or not

Throws:

Exception - an error occured

setDoesHandleDeletions

public void setDoesHandleDeletions(boolean doesHandleDeletions)
                            throws Exception

Enables or disables delta file deletion notification handling

Parameters:

doesHandleAdditions - specifies whether delta file deletion notifications should be handled or not

Throws:

Exception - an error occured

setEnforceStrictOrder

public void setEnforceStrictOrder(boolean enforceStrictOrder)
                           throws Exception

Enables or disables enforcement of strict ordering

Parameters:

enforceStrictOrder - specifies whether strict ordering should be enforced or not

Throws:

Exception - an error occured

close

public void close()
           throws Exception

Closes the DeltaFileConsumer

Throws:

Exception - an error occured