Class AttrHistorical

java.lang.Object
org.opends.server.replication.plugin.AttrHistorical
Direct Known Subclasses:
AttrHistoricalMultiple, AttrHistoricalSingle
public abstract sealed class AttrHistorical extends Object permits AttrHistoricalSingle, AttrHistoricalMultiple
Stores how the attribute values evolved over time for a specific attribute type. It is used to resolve modify conflicts for a specific attribute type. It represents the portion of the ds-sync-hist attribute dedicated to a specific attribute type.

  • Constructor Details

    • AttrHistorical

      public AttrHistorical()

  • Method Details

    • replayOperation

      public abstract Modification replayOperation(Csn csn, Entry modifiedEntry, Modification mod)
      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 return the modification that will actually have to be replayed.
      Parameters:
      csn - The CSN associated to the operation.
      modifiedEntry - The entry modified by this operation.
      mod - The modification.
      Returns:
      The modification which should be replayed, or null if the modification should not be replayed.

    • processLocalOrNonConflictModification

      public abstract 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. 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.

      Parameters:
      csn - The CSN of the operation to process
      mod - The modify operation to process.

    • getValuesHistorical

      public abstract Collection<AttrValueHistorical> getValuesHistorical()
      Returns the unmodifiable historical values.
      Returns:
      the unmodifiable historical values

    • containsAddedValue

      public abstract boolean containsAddedValue(ByteString value)
      Returns true if this historical information contains add or replace meta-data for the provided attribute value.
      Parameters:
      value - The attribute value.
      Returns:
      true if this historical information contains add or replace meta-data for the provided attribute value.

    • getDeleteTime

      public abstract Csn getDeleteTime()
      Returns the last time when this attribute was deleted.
      Returns:
      the last time when this attribute was deleted

    • attributeDeleteTime

      public abstract void attributeDeleteTime(Csn csn)
      Sets the attribute delete time.
      Parameters:
      csn - the attribute delete time

    • assign

      public abstract void assign(List<HistoricalAttributeValue> histVals)
      Assigns all the historical values to this attribute.
      Parameters:
      histVals - the historical values

    • assignPreDeduplicatedValues

      public abstract void assignPreDeduplicatedValues(List<HistoricalAttributeValue> histVals)
      Assigns all the pre-deduplicated historical values to this attribute.
      Parameters:
      histVals - the pre-deduplicated historical values