org.exoplatform.clouddrive.cmis

Class CMISAPI.ChangesIterator

java.lang.Object

org.exoplatform.clouddrive.utils.ChunkIterator<org.apache.chemistry.opencmis.client.api.ChangeEvent>

org.exoplatform.clouddrive.cmis.CMISAPI.ChangesIterator

Enclosing class:

CMISAPI

protected class CMISAPI.ChangesIterator
extends org.exoplatform.clouddrive.utils.ChunkIterator<org.apache.chemistry.opencmis.client.api.ChangeEvent>

Iterator over set of drive change events from CMIS Change Log. The iterator will fetch all available events since a given start token.This iterator hides next-chunk logic on request to the service.
Iterator methods can throw CMISException in case of remote or communication errors.

Field Summary

Fields

Modifier and Type	Field and Description
protected List<org.apache.chemistry.opencmis.client.api.ChangeEvent>	changes The changes.
protected CMISAPI.ChangeToken	changeToken The latest chunk token.
protected boolean	cleanNext The clean next.
protected boolean	firstRun The first run.
protected boolean	hasMoreItems The has more items.
protected CMISAPI.ChangeToken	lastFetchedToken The latest chunk token.
protected CMISAPI.ChangeToken	latestChunkToken The latest chunk token.

Fields inherited from class org.exoplatform.clouddrive.utils.ChunkIterator

available, fetched, iter, next

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ChangesIterator(CMISAPI.ChangeToken startChangeToken) Instantiates a new changes iterator.

Method Summary

Modifier and Type	Method and Description
protected CMISAPI.ChangeToken	getLastChangeToken() Last consumed event change token.
boolean	hasNext()
protected boolean	hasNextChunk()
org.apache.chemistry.opencmis.client.api.ChangeEvent	next()
protected Iterator<org.apache.chemistry.opencmis.client.api.ChangeEvent>	nextChunk()

Methods inherited from class org.exoplatform.clouddrive.utils.ChunkIterator

available, getAvailable, getFetched

Methods inherited from class java.lang.Object

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

Field Detail

changeToken

protected CMISAPI.ChangeToken changeToken

The latest chunk token.

lastFetchedToken

protected CMISAPI.ChangeToken lastFetchedToken

The latest chunk token.

latestChunkToken

protected CMISAPI.ChangeToken latestChunkToken

The latest chunk token.

changes

protected List<org.apache.chemistry.opencmis.client.api.ChangeEvent> changes

The changes.

firstRun

protected boolean firstRun

The first run.

hasMoreItems

protected boolean hasMoreItems

The has more items.

cleanNext

protected boolean cleanNext

The clean next.

Constructor Detail

ChangesIterator

protected ChangesIterator(CMISAPI.ChangeToken startChangeToken)
                   throws CMISException,
                          org.exoplatform.clouddrive.CloudDriveAccessException

Instantiates a new changes iterator.

Parameters:

startChangeToken - the start change token

Throws:

CMISException - the CMIS exception

org.exoplatform.clouddrive.CloudDriveAccessException - the cloud drive access exception

Method Detail

nextChunk

protected Iterator<org.apache.chemistry.opencmis.client.api.ChangeEvent> nextChunk()
                                                                            throws CMISException,
                                                                                   org.exoplatform.clouddrive.CloudDriveAccessException

Specified by:

nextChunk in class org.exoplatform.clouddrive.utils.ChunkIterator<org.apache.chemistry.opencmis.client.api.ChangeEvent>

Throws:

CMISException

org.exoplatform.clouddrive.CloudDriveAccessException

hasNextChunk

protected boolean hasNextChunk()

Specified by:

hasNextChunk in class org.exoplatform.clouddrive.utils.ChunkIterator<org.apache.chemistry.opencmis.client.api.ChangeEvent>

hasNext

public boolean hasNext()
                throws org.exoplatform.clouddrive.CloudDriveException

Overrides:

hasNext in class org.exoplatform.clouddrive.utils.ChunkIterator<org.apache.chemistry.opencmis.client.api.ChangeEvent>

Throws:

org.exoplatform.clouddrive.CloudDriveException

next

public org.apache.chemistry.opencmis.client.api.ChangeEvent next()
                                                          throws NoSuchElementException,
                                                                 org.exoplatform.clouddrive.CloudDriveException

Overrides:

next in class org.exoplatform.clouddrive.utils.ChunkIterator<org.apache.chemistry.opencmis.client.api.ChangeEvent>

Throws:

NoSuchElementException

org.exoplatform.clouddrive.CloudDriveException

getLastChangeToken

protected CMISAPI.ChangeToken getLastChangeToken()

Last consumed event change token. Can be the same as start token. Can be empty if no data received by fetching and if CMIS service doesn't return the chunk latest token.

Returns:

CMISAPI.ChangeToken last fetched change token, token of last fetched events portion or null