Implement automatic reference importing functionality for portlets

• Type: Technical Task
• Status: Closed
• Resolution: Completed
• Affects Version/s: None
• Fix Version/s: 7.0.0 Alpha 1
• Component/s: Content Display Widgets > Asset Publisher widget, Staging, Staging > Export/Import, ~[Archived] WCM > Publication
• Labels: None
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/30307

Implement new API methods for making possible automatic reference importing.

• New methods in PortletDataContext
  • public Element getReferenceElement(Class<?> clazz, long classPK)
  • public Element getReferenceElement(String className, long classPK)
• New methods in StagedModelDataHandlerUtil
  • public static void importReferenceStagedModel(PortletDataContext portletDataContext, Class<?> stagedModelClass, long classPK) throws PortletDataException
  • public static void importReferenceStagedModel(PortletDataContext portletDataContext, String stagedModelClassName, long classPK) throws PortletDataException
• New Import preferences processor capability