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Eclipse Platform
Release 3.5

org.eclipse.ui
Interface IPersistableElement

All Superinterfaces:
IPersistable
All Known Subinterfaces:
IAggregateWorkingSet, IWorkingSet
All Known Implementing Classes:
FileEditorInput, FileInPlaceEditorInput, FileStoreEditorInput

public interface IPersistableElement
extends IPersistable

Interface for asking an object to store its state in a memento.

This interface is typically included in interfaces where persistance is required.

When the workbench is shutdown objects which implement this interface will be persisted. At this time the getFactoryId method is invoked to discover the id of the element factory that will be used to re-create the object from a memento. Then the saveState method is invoked to store the element data into a newly created memento. The resulting mementos are collected up and written out to a single file.

During workbench startup these mementos are read from the file. The factory Id for each is retrieved and mapped to an IElementFactory which has been registered in the element factory extension point. If a factory exists for the Id it will be engaged to re-create the original object.

See Also:
IAdaptable, IMemento, IElementFactory

Method Summary
  String getFactoryId ()
          Returns the id of the element factory which should be used to re-create this object.
 
Methods inherited from interface org.eclipse.ui. IPersistable
saveState
 

Method Detail

getFactoryId

String getFactoryId()
Returns the id of the element factory which should be used to re-create this object.

Factory ids are declared in extensions to the standard extension point "org.eclipse.ui.elementFactories".

Returns:
the element factory id
See Also:
IElementFactory

Eclipse Platform
Release 3.5

Guidelines for using Eclipse APIs.

Copyright (c) Eclipse contributors and others 2000, 2008. All rights reserved.


 
 
  Published under the terms of the Eclipse Public License Version 1.0 ("EPL") Design by Interspire