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

protected List<org.apache.chemistry.opencmis.client.api.ChangeEvent>	changes
protected CMISAPI.ChangeToken	changeToken
protected boolean	cleanNext
protected boolean	firstRun
protected boolean	hasMoreItems
protected CMISAPI.ChangeToken	lastFetchedToken
protected CMISAPI.ChangeToken	latestChunkToken

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

available, fetched, iter, next

Constructor Summary

protected

CMISAPI.ChangesIterator(CMISAPI.ChangeToken startChangeToken)

Method Summary

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

lastFetchedToken

protected CMISAPI.ChangeToken lastFetchedToken

latestChunkToken

protected CMISAPI.ChangeToken latestChunkToken

changes

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

firstRun

protected boolean firstRun

hasMoreItems

protected boolean hasMoreItems

cleanNext

protected boolean cleanNext

Constructor Detail

CMISAPI.ChangesIterator

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

Throws:

CMISException

org.exoplatform.clouddrive.CloudDriveAccessException

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 null 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