Package jenkins.scm.api

Class SCMHeadMigration<S extends SCMSource,H extends SCMHead,R extends SCMRevision>

java.lang.Object

jenkins.scm.api.SCMHeadMigration<S,H,R>

All Implemented Interfaces:

ExtensionPoint

public abstract class SCMHeadMigration<S extends SCMSource,H extends SCMHead,R extends SCMRevision>
extends Object
implements ExtensionPoint

If a SCMSource plugin needs to migrate the implementation classes for SCMHead this extension point allows the plugin to register type migrations. For speed of migration implementations should just jump directly to the final end-point and not expect recursive chain walking.

Since:

2.0.2

Nested Class Summary

Nested classes/interfaces inherited from interface hudson.ExtensionPoint

ExtensionPoint.LegacyInstancesAreScopedToHudson

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	SCMHeadMigration(Class<S> sourceClass, Class<H> headClass, Class<R> revisionClass)	Constructor.

Method Summary

Modifier and Type	Method	Description
final Class<H>	getSCMHeadClass()	Gets the SCMHead that the migration applies to.
final Class<R>	getSCMRevisionClass()	Gets the SCMRevision that the migration applies to.
final Class<S>	getSCMSourceClass()	Gets the SCMSource that the migration applies to.
abstract SCMHead	migrate(S source, H head)	Perform a migration.
SCMRevision	migrate(S source, R revision)	Perform a migration.
static SCMHead	readResolveSCMHead(SCMSource source, SCMHead head)	Perform a migration.
static SCMRevision	readResolveSCMRevision(SCMSource source, SCMRevision revision)	Perform a migration.

Methods inherited from class java.lang.Object

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

Constructor Details

SCMHeadMigration

protected SCMHeadMigration(Class<S> sourceClass,
 Class<H> headClass,
 Class<R> revisionClass)

Constructor.

Parameters:

sourceClass - the SCMSource that the migration applies to.

headClass - the SCMHead that the migration applies to.

revisionClass - the SCMRevision that the migration applies to.

Method Details

getSCMSourceClass

public final Class<S> getSCMSourceClass()

Gets the SCMSource that the migration applies to.

Returns:

the SCMSource that the migration applies to.

getSCMHeadClass

public final Class<H> getSCMHeadClass()

Gets the SCMHead that the migration applies to.

Returns:

the SCMHead that the migration applies to.

getSCMRevisionClass

public final Class<R> getSCMRevisionClass()

Gets the SCMRevision that the migration applies to.

Returns:

the SCMRevision that the migration applies to.

migrate

@CheckForNull
public abstract SCMHead migrate(@NonNull
 S source,
 @NonNull
 H head)

Perform a migration.

Note: if you migrate a SCMHead then most likely you will also want to migrate the SCMRevision instances associated with that SCMHead - at the very least to update SCMRevision.getHead().

Parameters:

source - the source instance.

head - the candidate head.

Returns:

the migrated head or null if the migration was not appropriate.

migrate

@CheckForNull
public SCMRevision migrate(@NonNull
 S source,
 @NonNull
 R revision)

Perform a migration.

Parameters:

source - the source instance.

revision - the candidate revision.

Returns:

the migrated revision or null if the migration was not appropriate.

readResolveSCMHead

@NonNull
public static SCMHead readResolveSCMHead(@NonNull
 SCMSource source,
 @NonNull
 SCMHead head)

Perform a migration.

Parameters:

source - the source instance.

head - the candidate head.

Returns:

the migrated head or the original head.

readResolveSCMRevision

@CheckForNull
public static SCMRevision readResolveSCMRevision(@NonNull
 SCMSource source,
 @CheckForNull
 SCMRevision revision)

Perform a migration.

Parameters:

source - the source instance.

revision - the candidate revision.

Returns:

the migrated revision or the original revision.