er.extensions.migration
Class ERXMigrationDatabase.Migration

java.lang.Object
  er.extensions.migration.ERXMigrationDatabase.Migration

All Implemented Interfaces:

IERXMigration

Direct Known Subclasses:

ERAttachment0, ERAttachment1, ERAttachmentMigration, ERCoreBusinessLogic0, ERTaggable0, ERTaggableEntity0, ERXTest0

Enclosing class:

ERXMigrationDatabase

public abstract static class ERXMigrationDatabase.Migration
extends Object
implements IERXMigration

A convenience implementation of IERXMigration that passes in an ERXMigrationDatabase instead of channel + model.

Author:

mschrag

Field Summary

static boolean	ALLOWS_NULL
static boolean	NOT_NULL

Constructor Summary

protected	ERXMigrationDatabase.Migration()
protected	ERXMigrationDatabase.Migration(NSArray languages)

Method Summary

void	downgrade(EOEditingContext editingContext, EOAdaptorChannel channel, EOModel model) Called when migrating the database from the next version to this version.
abstract void	downgrade(EOEditingContext editingContext, ERXMigrationDatabase database)
NSArray<String>	languages()
NSArray<ERXModelVersion>	modelDependencies() Overridden to return null by default
void	upgrade(EOEditingContext editingContext, EOAdaptorChannel channel, EOModel model) Called when migrating the database from the last version to this version.
abstract void	upgrade(EOEditingContext editingContext, ERXMigrationDatabase database)

Methods inherited from class java.lang.Object

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

Field Detail

ALLOWS_NULL

public static final boolean ALLOWS_NULL

See Also:

Constant Field Values

NOT_NULL

public static final boolean NOT_NULL

See Also:

Constant Field Values

Constructor Detail

ERXMigrationDatabase.Migration

protected ERXMigrationDatabase.Migration()

ERXMigrationDatabase.Migration

protected ERXMigrationDatabase.Migration(NSArray languages)

Method Detail

languages

public NSArray<String> languages()

downgrade

public void downgrade(EOEditingContext editingContext,
                      EOAdaptorChannel channel,
                      EOModel model)
               throws Throwable

Description copied from interface: IERXMigration

Called when migrating the database from the next version to this version. For instance if this is AuthModel1, it will be called to migrate from version 1 back to version 0. If this is the lowest migration you support, downgrade should throw an ERXMigrationFailedException.

Specified by:

downgrade in interface IERXMigration

Parameters:

editingContext - the editing context you can perform EO operations with.

channel - the channel to perform low level operations with

model - the model being downgraded

Throws:

Throwable - if something fails

downgrade

public abstract void downgrade(EOEditingContext editingContext,
                               ERXMigrationDatabase database)
                        throws Throwable

Parameters:

editingContext - the editing context

database - the migration database

Throws:

Throwable - if anything goes wrong

See Also:

IERXMigration.downgrade

modelDependencies

public NSArray<ERXModelVersion> modelDependencies()

Overridden to return null by default

Specified by:

modelDependencies in interface IERXMigration

Returns:

an array of model versions that this migration depends on

upgrade

public void upgrade(EOEditingContext editingContext,
                    EOAdaptorChannel channel,
                    EOModel model)
             throws Throwable

Description copied from interface: IERXMigration

Called when migrating the database from the last version to this version. For instance if this is AuthModel1, it will be called to migrate from version 0 to version 1.

Specified by:

upgrade in interface IERXMigration

Parameters:

editingContext - the editing context you can perform EO operations with.

channel - the channel to perform low level operations with

model - the model being upgraded

Throws:

Throwable - if something fails

upgrade

public abstract void upgrade(EOEditingContext editingContext,
                             ERXMigrationDatabase database)
                      throws Throwable

Parameters:

editingContext - the editing context

database - the migration database

Throws:

Throwable - if anything goes wrong

See Also:

IERXMigration.upgrade