UndoInstanceUpdate (egeria 5.2-SNAPSHOT API)

java.lang.Object

org.odpi.openmetadata.adapters.repositoryservices.xtdb.repositoryconnector.txnfn.AbstractTransactionFunction

org.odpi.openmetadata.adapters.repositoryservices.xtdb.repositoryconnector.txnfn.UndoInstanceUpdate

Direct Known Subclasses:: UndoEntityUpdate, UndoRelationshipUpdate

public abstract class UndoInstanceUpdate extends AbstractTransactionFunction

Base transaction function for rolling back the last changes made to an instance's properties or status.

Constructor Summary

Constructors

Constructor

Description

UndoInstanceUpdate()
Method Summary

Modifier and Type

Method

Description

protected static clojure.lang.IPersistentVector

getPreviousVersionFromCursor(xtdb.api.ICursor<clojure.lang.IPersistentMap> cursor)

Retrieve only the current and previous versions of the provided XTDB reference, from an already-opened lazily- evaluated cursor.

Methods inherited from class org.odpi.openmetadata.adapters.repositoryservices.xtdb.repositoryconnector.txnfn.AbstractTransactionFunction
createTransactionFunction, getGUID, getInstanceProvenanceType, getMetadataCollectionId, getTxnTimeCalculation, getTypeDefForInstance, getTypeDefGUID, incrementVersion, incrementVersion

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details
- UndoInstanceUpdate
  
  public UndoInstanceUpdate()
Method Details
- getPreviousVersionFromCursor
  
  protected static clojure.lang.IPersistentVector getPreviousVersionFromCursor(xtdb.api.ICursor<clojure.lang.IPersistentMap> cursor)
  
  Retrieve only the current and previous versions of the provided XTDB reference, from an already-opened lazily- evaluated cursor.
  
  Parameters:
  
  cursor - from which to lazily-evaluate the current and previous versions
  
  Returns:
  
  IPersistentVector with the current version as the first element, and the previous version as the second element (or null if there is no previous version)