org.odpi.egeria.connectors.juxt.crux.model

Class PersistenceLayer

java.lang.Object

org.odpi.egeria.connectors.juxt.crux.model.PersistenceLayer

public class PersistenceLayer
extends Object

Manages the persistence layer: for now, primarily indicating the version of the connector for which data has been persisted, to validate migration starting points.

Field Summary

Fields

Modifier and Type	Field and Description
static long	LATEST_VERSION

Constructor Summary

Constructors

Constructor and Description
PersistenceLayer()

Method Summary

Modifier and Type	Method and Description
protected static crux.api.CruxDocument	getPersistenceDetails(crux.api.ICruxAPI cruxAPI) Retrieve details about the persistence layer from the provided Crux back-end.
static long	getVersion(crux.api.ICruxAPI cruxAPI) Retrieve the version of the persistence layer for the provided Crux back-end.
static boolean	isLatestVersion(crux.api.ICruxAPI cruxAPI) Check whether the persistence layer for the provided Crux back-end is the latest or not.
static void	setVersion(crux.api.ICruxAPI cruxAPI, long version) Set the version of the persistence layer for the provided Crux back-end.

Methods inherited from class java.lang.Object

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

Field Detail

LATEST_VERSION

public static final long LATEST_VERSION

See Also:

Constant Field Values

Constructor Detail

PersistenceLayer

public PersistenceLayer()

Method Detail

getVersion

public static long getVersion(crux.api.ICruxAPI cruxAPI)

Retrieve the version of the persistence layer for the provided Crux back-end.

Parameters:

cruxAPI - the Crux back-end for which to retrieve the persistence layer version

Returns:

the version of the persistence layer

setVersion

public static void setVersion(crux.api.ICruxAPI cruxAPI,
                              long version)

Set the version of the persistence layer for the provided Crux back-end. CAUTION: this is used for migration purposes, so should not be set by anything other than migration utilities.

Parameters:

cruxAPI - the Crux back-end for which to set the persistence layer version

version - to set

isLatestVersion

public static boolean isLatestVersion(crux.api.ICruxAPI cruxAPI)

Check whether the persistence layer for the provided Crux back-end is the latest or not.

Parameters:

cruxAPI - the Crux back-end for which to check the persistence layer version

Returns:

true if it is at the latest version, otherwise false

getPersistenceDetails

protected static crux.api.CruxDocument getPersistenceDetails(crux.api.ICruxAPI cruxAPI)

Retrieve details about the persistence layer from the provided Crux back-end.

Parameters:

cruxAPI - the Crux back-end for which to retrieve the persistence layer details

Returns:

CruxDocument containing the details (or null if there are none)