org.apache.jackrabbit.oak.plugins.document.rdb

Class RDBVersionGCSupport

java.lang.Object

org.apache.jackrabbit.oak.plugins.document.VersionGCSupport

org.apache.jackrabbit.oak.plugins.document.rdb.RDBVersionGCSupport

public class RDBVersionGCSupport
extends VersionGCSupport

RDB specific version of VersionGCSupport which uses an extended query interface to fetch required NodeDocuments.

Constructor Summary

Constructors

Constructor and Description
RDBVersionGCSupport(RDBDocumentStore store)

Method Summary

Modifier and Type	Method and Description
long	getDeletedOnceCount()
long	getOldestDeletedOnceTimestamp(Clock clock, long precisionMs) Retrieve the time of the oldest document marked as 'deletedOnce'.
Iterable<NodeDocument>	getPossiblyDeletedDocs(long fromModified, long toModified) Returns documents that have a NodeDocument.MODIFIED_IN_SECS value within the given range and the NodeDocument.DELETED set to true.
protected Iterable<NodeDocument>	identifyGarbage(Set<NodeDocument.SplitDocType> gcTypes, RevisionVector sweepRevs, long oldestRevTimeStamp)

Methods inherited from class org.apache.jackrabbit.oak.plugins.document.VersionGCSupport

createCleanUp, getDocumentStore, isDefaultNoBranchSplitNewerThan

Methods inherited from class java.lang.Object

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

Constructor Detail

RDBVersionGCSupport

public RDBVersionGCSupport(RDBDocumentStore store)

Method Detail

getPossiblyDeletedDocs

public Iterable<NodeDocument> getPossiblyDeletedDocs(long fromModified,
                                                     long toModified)

Description copied from class: VersionGCSupport

Returns documents that have a NodeDocument.MODIFIED_IN_SECS value within the given range and the NodeDocument.DELETED set to true. The two passed modified timestamps are in milliseconds since the epoch and the implementation will convert them to seconds at the granularity of the NodeDocument.MODIFIED_IN_SECS field and then perform the comparison.

Overrides:

getPossiblyDeletedDocs in class VersionGCSupport

Parameters:

fromModified - the lower bound modified timestamp (inclusive)

toModified - the upper bound modified timestamp (exclusive)

Returns:

matching documents.

identifyGarbage

protected Iterable<NodeDocument> identifyGarbage(Set<NodeDocument.SplitDocType> gcTypes,
                                                 RevisionVector sweepRevs,
                                                 long oldestRevTimeStamp)

Overrides:

identifyGarbage in class VersionGCSupport

getOldestDeletedOnceTimestamp

public long getOldestDeletedOnceTimestamp(Clock clock,
                                          long precisionMs)

Description copied from class: VersionGCSupport

Retrieve the time of the oldest document marked as 'deletedOnce'.

Overrides:

getOldestDeletedOnceTimestamp in class VersionGCSupport

precisionMs - the exact time may vary by given precision

Returns:

the timestamp of the oldest document marked with 'deletecOnce', module given prevision. If no such document exists, returns the max time inspected (close to current time).

getDeletedOnceCount

public long getDeletedOnceCount()

Overrides:

getDeletedOnceCount in class VersionGCSupport