org.treetank.revisioning

Class SlidingSnapshot

java.lang.Object

org.treetank.revisioning.SlidingSnapshot

All Implemented Interfaces:

IRevisioning

public class SlidingSnapshot
extends Object
implements IRevisioning

Sliding Snapshot versioning of DataBuckets.

Author:

Sebastian Graf, University of Konstanz

Constructor Summary

Constructors

Constructor and Description
SlidingSnapshot()

Method Summary

Methods

Modifier and Type	Method and Description
DataBucket	combineBuckets(DataBucket[] pBuckets) Method to reconstruct a complete DataBucket with the help of party filled buckets plus a revision-delta which determines the necessary steps back.
LogValue	combineBucketsForModification(int pRevisionsToRestore, long pNewBucketKey, DataBucket[] pBuckets, boolean pFullDump) Method to reconstruct a complete DataBucket for reading as well as a DataBucket for serializing with the datas to write already on there.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

SlidingSnapshot

public SlidingSnapshot()

Method Detail

combineBuckets

public DataBucket combineBuckets(DataBucket[] pBuckets)

Method to reconstruct a complete DataBucket with the help of party filled buckets plus a revision-delta which determines the necessary steps back.

Specified by:

combineBuckets in interface IRevisioning

Parameters:

pBuckets - the base of the complete DataBucket

Returns:

the complete DataBucket

combineBucketsForModification

public LogValue combineBucketsForModification(int pRevisionsToRestore,
                                     long pNewBucketKey,
                                     DataBucket[] pBuckets,
                                     boolean pFullDump)

Method to reconstruct a complete DataBucket for reading as well as a DataBucket for serializing with the datas to write already on there.

Specified by:

combineBucketsForModification in interface IRevisioning

Parameters:

pRevisionsToRestore - number of revisions to restore

pNewBucketKey - bucket key of the new bucket

pBuckets - the base of the complete DataBucket

pFullDump - boolean if entire bucket should be written. Must be triggered from extern since it is based on the revisionToRestore-Param

Returns:

a LogValue holding a complete DataBucket for reading a one for writing

toString

public String toString()

Overrides:

toString in class Object