org.alfresco.repo.admin.patch

Interface Patch

All Known Implementing Classes:

AbstractPatch, AbstractPermissionChangePatch, AddDutchEmailTemplatesPatch, AddGroupAuthorityPatch, AddSurfConfigFoldersPatch, AddUnmovableAspectToSitesPatch, AdminUserPatch, AliasableAspectPatch, AsynchronousPatch, CalendarAllDayEventDatesCorrectingPatch, FixBpmPackagesPatch, FixPersonSizeCurrentTypePatch, FixTemplatePatch, GenericBootstrapPatch, GenericDeleteAspectForTypePatch, GenericEMailTemplateUpdatePatch, GenericMimetypeRenamePatch, GenericWorkflowPatch, ImapFoldersPatch, ImapUnsubscribedAspectPatch, LinkNodeFileExtensionPatch, MigrateTenantsFromAttrsToTablePatch, NoLongerSupportedPatch, NoOpPatch, QNamePatch, RenameSiteAuthorityDisplayName, SamplePatch, SchemaUpgradeScriptPatch, SharedFolderPatch, SimplePatch, SiteLoadPatch, SurfConfigFolderPatch, SWSDPPatch, UpdateAuditTemplatePatch, UpdateFollowingEmailTemplatesPatch, UpdateWorkflowNotificationTemplatesPatch

public interface Patch

A patch is an executable class that makes a change to persisted data.

Auditing information is not maintained by the patch - rather it is solely responsible for the execution of the processes necessary to apply the patch.

Patches must not be reappliable. It is up to the patch management systems to ensure that patches are never reapplied.

Since:

1.2

Author:

Derek Hulley

See Also:

AbstractPatch

Method Summary

Modifier and Type	Method and Description
boolean	applies(int version) Check if the patch is applicable to a given schema version.
String	apply() Applies the patch.
String	applyAsync() Apply the patch, regardless of the deferred flag.
List<Patch>	getAlternatives() Get patches that could have done the work already
List<Patch>	getDependsOn() Get patches that this patch depends on
String	getDescription()
int	getFixesFromSchema()
int	getFixesToSchema()
String	getId()
int	getTargetSchema()
boolean	isDeferred() Indicates whether the patch must be deferred (not to be executed in bootstrap) or not
boolean	isForce()
boolean	isIgnored() Is this patch just ignored - never considered for application
boolean	requiresTransaction() Does the patch need to be wrapped in a transaction?

Method Detail

getId

String getId()

getDescription

String getDescription()

getFixesFromSchema

int getFixesFromSchema()

Returns:

Returns the smallest schema number that this patch may be applied to

getFixesToSchema

int getFixesToSchema()

Returns:

Returns the largest schema number that this patch may be applied to

getTargetSchema

int getTargetSchema()

Returns:

Returns the schema number that this patch attempts to bring the repo up to

isForce

boolean isForce()

Returns:

Returns true if the patch must forcefully run regardless of any other state

getDependsOn

List<Patch> getDependsOn()

Get patches that this patch depends on

Returns:

Returns a list of patches

getAlternatives

List<Patch> getAlternatives()

Get patches that could have done the work already

Returns:

Returns a list of patches

applies

boolean applies(int version)

Check if the patch is applicable to a given schema version.

Parameters:

version - a schema version number

Returns:

Returns (fixesFromVersion <= version <= fixesToVersion)

requiresTransaction

boolean requiresTransaction()

Does the patch need to be wrapped in a transaction?

Returns:

Returns true if the patch needs to be wrapped, false otherwise

apply

String apply()
      throws PatchException

Applies the patch. Typically this will be within the bounds of a new transaction.

Returns:

Returns the patch execution report

Throws:

PatchException - if the patch failed to be applied

applyAsync

String applyAsync()
           throws PatchException

Apply the patch, regardless of the deferred flag. So if the patch has not run due to it being deferred earlier then this will run it now. Also ignores the "applied" lock. So the patch can be executed many times.

Returns:

the patch report

Throws:

PatchException - if the patch failed to be applied

isIgnored

boolean isIgnored()

Is this patch just ignored - never considered for application

Returns:

boolean

isDeferred

boolean isDeferred()

Indicates whether the patch must be deferred (not to be executed in bootstrap) or not

Returns:

true if the patch must be deferred, false otherwise