org.apache.jackrabbit.oak.plugins.document

Class Revision

java.lang.Object

org.apache.jackrabbit.oak.plugins.document.Revision

All Implemented Interfaces:

CacheValue

public final class Revision
extends java.lang.Object
implements CacheValue

A revision.

Constructor Summary

Constructors

Constructor and Description
Revision(long timestamp, int counter, int clusterId)
Revision(long timestamp, int counter, int clusterId, boolean branch)

Method Summary

Modifier and Type	Method and Description
Revision	asBranchRevision() Returns a revision with the same timestamp, counter and clusterId as this revision and the branch flag set to true.
Revision	asTrunkRevision() Returns a revision with the same timestamp, counter and clusterId as this revision and the branch flag set to false.
boolean	equals(java.lang.Object other)
static Revision	fromString(java.lang.String rev)
int	getClusterId()
int	getCounter()
static long	getCurrentTimestamp() Get the timestamp value of the current date and time.
int	getMemory() The estimated amount of memory used by this object, in bytes.
long	getTimestamp() Get the timestamp in milliseconds since 1970.
static long	getTimestampDifference(Revision r1, Revision r2) Get the timestamp difference between two revisions (r1 - r2) in milliseconds.
int	hashCode()
boolean	isBranch()
java.lang.String	toReadableString()
java.lang.String	toString()
java.lang.StringBuilder	toStringBuilder(java.lang.StringBuilder sb) Appends the string representation of this revision to the given StringBuilder.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Revision

public Revision(long timestamp,
                int counter,
                int clusterId)

Revision

public Revision(long timestamp,
                int counter,
                int clusterId,
                boolean branch)

Method Detail

getCurrentTimestamp

public static long getCurrentTimestamp()

Get the timestamp value of the current date and time. Within the same process, the returned value is never smaller than a previously returned value, even if the system time was changed.

Returns:

the timestamp

getTimestampDifference

public static long getTimestampDifference(Revision r1,
                                          Revision r2)

Get the timestamp difference between two revisions (r1 - r2) in milliseconds.

Parameters:

r1 - the first revision

r2 - the second revision

Returns:

the difference in milliseconds

fromString

public static Revision fromString(java.lang.String rev)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

toStringBuilder

public java.lang.StringBuilder toStringBuilder(java.lang.StringBuilder sb)

Appends the string representation of this revision to the given StringBuilder.

Parameters:

sb - a StringBuilder.

Returns:

the StringBuilder instance passed to this method.

toReadableString

public java.lang.String toReadableString()

getTimestamp

public long getTimestamp()

Get the timestamp in milliseconds since 1970.

Returns:

the timestamp

getCounter

public int getCounter()

isBranch

public boolean isBranch()

Returns:

true if this is a branch revision, otherwise false.

asBranchRevision

public Revision asBranchRevision()

Returns a revision with the same timestamp, counter and clusterId as this revision and the branch flag set to true.

Returns:

branch revision with this timestamp, counter and clusterId.

asTrunkRevision

public Revision asTrunkRevision()

Returns a revision with the same timestamp, counter and clusterId as this revision and the branch flag set to false.

Returns:

trunk revision with this timestamp, counter and clusterId.

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object other)

Overrides:

equals in class java.lang.Object

getClusterId

public int getClusterId()

getMemory

public int getMemory()

Description copied from interface: CacheValue

The estimated amount of memory used by this object, in bytes.

Specified by:

getMemory in interface CacheValue

Returns:

the estimated number of bytes