Chris@0: The migrate_plus module extends the core migration system with API enhancements
Chris@0: and additional functionality, as well as providing practical examples.
Chris@0: 
Chris@0: Extensions to base API
Chris@0: ======================
Chris@0: * A Migration configuration entity is provided, enabling persistance of dynamic
Chris@0: migration configuration.
Chris@0: * A ConfigEntityDiscovery class is implemented which enables plugin configuration
Chris@0: to be based on configuration entities. This is fully general - it can be used
Chris@0: for any configuration entity type, not just migrations.
Chris@0: * A MigrationConfigEntityPluginManager class and corresponding
Chris@0: plugin.manager.config_entity_migration service is provided, to enable discovery
Chris@0: and instantiation of migration plugins based on the Migration configuration
Chris@0: entity.
Chris@0: * A MigrationGroup configuration entity is provided, which enables migrations to
Chris@0: be organized in groups, and to maintain shared configuration in one place.
Chris@0: * A MigrateEvents::PREPARE_ROW event is provided to dispatch hook_prepare_row()
Chris@0: invocations as events.
Chris@0: * A SourcePluginExtension class is provided, enabling one to define fields and
Chris@0: IDs for a source plugin via configuration rather than requiring PHP code.
Chris@0: 
Chris@0: Plugins
Chris@0: =======
Chris@0: * A Url source plugin is provided, implementing a common structure for
Chris@0: file-based data providers.
Chris@0: * XML and JSON fetchers and parsers for the Url source plugin are provided.
Chris@0: 
Chris@0: Examples
Chris@0: ========
Chris@0: * The migrate_example submodule provides a fully functional and runnable
Chris@0: example migration scenario demonstrating the basic concepts and most common
Chris@0: techniques for SQL-based migrations.
Chris@0: * The migrate_example_advanced submodule provides examples of migration from
Chris@0: different kinds of sources, as well as less common techniques.