Package com.xpn.xwiki.store.migration

Interface DataMigration

All Known Subinterfaces:

HibernateDataMigration

All Known Implementing Classes:

AbstractDropNotNullDataMigration, AbstractHibernateDataMigration, AbstractResizeMigration, LegacyDataMigration, R1008010XWIKI10092DataMigration, R1138000XWIKI16709DataMigration, R130200000XWIKI17200DataMigration, R140000000XWIKI19125DataMigration, R140200000XWIKI19352DataMigration, R140200010XWIKI19207DataMigration, R140600000XWIKI19869DataMigration, R15428XWIKI2977DataMigration, R35100XWIKI7564DataMigration, R35101XWIKI7645DataMigration, R35102XWIKI7771DataMigration, R40000XWIKI6990DataMigration, R42000XWIKI7726DataMigration, R43000XWIKI6691DataMigration, R4340XWIKI883DataMigration, R4359XWIKI1459DataMigration, R54600TranslationDataMigration, R6079XWIKI1878DataMigration, R6405XWIKI1933DataMigration, R72000XWIKI12153DataMigration, R72001XWIKI12228DataMigration, R73000XWIKI12277DataMigration, R7350XWIKI2079DataMigration, R90000XWIKI13474DataMigration, R911000XWIKI14889DataMigration, R911001XWIKI14895DataMigration

@Role
public interface DataMigration

Interface for data migration. New data migration should be named using the "R"+vernum+issuenumber+"DataMigration" format to prevent collisions. The format for vernum is MMmmbbN where M is the 0-leftpadded major (e.g. "6" is written as "06"), m is the 0-leftpadded minor, b is the 0-leftpadded bugfix number and N a digit to be incremented in case we have several migrations in a given release. For example, the first migration for 10.8 would have the number 1008000.

Since:

3.4M1

Version:

$Id: 4be4b5034edc5860663ac98c0accfba3104b028c $

Method Summary

Modifier and Type	Method	Description
String	getDescription()
String	getName()
XWikiDBVersion	getVersion()
void	migrate()	Run migration.
boolean	shouldExecute(XWikiDBVersion startupVersion)

Method Detail

getName

String getName()

Returns:

the data migration hint. For example "R4340XWIKI883".

getDescription

String getDescription()

Returns:

a description of what the data migration does

getVersion

XWikiDBVersion getVersion()

Returns:

data version which need migration. before you commit stuff which needs migration, you need write data migration with version = current release number (i.e 32000 for release 3.2).

migrate

void migrate()
      throws DataMigrationException

Run migration.

Throws:

DataMigrationException - if any error

shouldExecute

boolean shouldExecute(XWikiDBVersion startupVersion)

Parameters:

startupVersion - the database version when the migration process starts (before any dataMigration is applied). This is useful for data migration which need to run only when the database is in a certain version.

Returns:

true if the migration should be executed or false otherwise