Package org.opends.server.replication.plugin

Class AttrHistoricalSingle

java.lang.Object

org.opends.server.replication.plugin.AttrHistorical

org.opends.server.replication.plugin.AttrHistoricalSingle

public class AttrHistoricalSingle
extends AttrHistorical

This class is used to store historical information for single valued attributes. One object of this type is created for each attribute that was changed in the entry. It allows to record the last time a given value was added, and the last time the whole attribute was deleted.

Constructor Summary

Constructors

Constructor	Description
AttrHistoricalSingle(AttributeType attributeType)	Builds an AttrHistoricalSingle object.

Method Summary

Modifier and Type	Method	Description
void	assign(org.opends.server.replication.plugin.HistoricalAttributeValue histVal)	Assign the provided historical value to this object.
CSN	getDeleteTime()	Returns the last time when this attribute was deleted.
Set<AttrValueHistorical>	getValuesHistorical()	Get the historical informations for this attribute Info.
void	processLocalOrNonConflictModification(CSN csn, Modification mod)	This method calculates the historical information and update the hist attribute to store the historical information for modify operation that does not conflict with previous operation.
boolean	replayOperation(Iterator<Modification> modsIterator, CSN csn, Entry modifiedEntry, Modification mod)	This method will be called when replaying an operation.
String	toString()

Methods inherited from class org.opends.server.replication.plugin.AttrHistorical

createAttributeHistorical

Methods inherited from class java.lang.Object

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

Constructor Detail

AttrHistoricalSingle

public AttrHistoricalSingle(AttributeType attributeType)

Builds an AttrHistoricalSingle object.

Parameters:

attributeType - the attribute type for this historical value

Method Detail

getDeleteTime

public CSN getDeleteTime()

Description copied from class: AttrHistorical

Returns the last time when this attribute was deleted.

Specified by:

getDeleteTime in class AttrHistorical

Returns:

the last time when this attribute was deleted

getValuesHistorical

public Set<AttrValueHistorical> getValuesHistorical()

Description copied from class: AttrHistorical

Get the historical informations for this attribute Info.

Specified by:

getValuesHistorical in class AttrHistorical

Returns:

the historical informations

processLocalOrNonConflictModification

public void processLocalOrNonConflictModification(CSN csn,
                                                  Modification mod)

Description copied from class: AttrHistorical

This method calculates the historical information and update the hist attribute to store the historical information for modify operation that does not conflict with previous operation. This is the usual path and should therefore be optimized.

It does not check if the operation to process is conflicting or not with previous operations. The caller is responsible for this.

Specified by:

processLocalOrNonConflictModification in class AttrHistorical

Parameters:

csn - The CSN of the operation to process

mod - The modify operation to process.

replayOperation

public boolean replayOperation(Iterator<Modification> modsIterator,
                               CSN csn,
                               Entry modifiedEntry,
                               Modification mod)

Description copied from class: AttrHistorical

This method will be called when replaying an operation. It should use whatever historical information is stored in this class to solve the conflict and modify the mod and the mods iterator accordingly

Specified by:

replayOperation in class AttrHistorical

Parameters:

modsIterator - The iterator on the mods from which the mod is extracted.

csn - The CSN associated to the operation.

modifiedEntry - The entry modified by this operation.

mod - The modification.

Returns:

true if a conflict was detected, false otherwise.

assign

public void assign(org.opends.server.replication.plugin.HistoricalAttributeValue histVal)

Description copied from class: AttrHistorical

Assign the provided historical value to this object.

Specified by:

assign in class AttrHistorical

Parameters:

histVal - the historical value

toString

public String toString()

Overrides:

toString in class Object