Follow Techotopia on Twitter

On-line Guides
All Guides
eBook Store
iOS / Android
Linux for Beginners
Office Productivity
Linux Installation
Linux Security
Linux Utilities
Linux Virtualization
Linux Kernel
System/Network Admin
Programming
Scripting Languages
Development Tools
Web Development
GUI Toolkits/Desktop
Databases
Mail Systems
openSolaris
Eclipse Documentation
Techotopia.com
Virtuatopia.com

How To Guides
Virtualization
General System Admin
Linux Security
Linux Filesystems
Web Servers
Graphics & Desktop
PC Hardware
Windows
Problem Solutions
Privacy Policy

  




 

 


org.eclipse.emf.workspace
Class ResourceUndoContext

java.lang.Object
  extended by 
org.eclipse.emf.workspace.ResourceUndoContext
All Implemented Interfaces:
IUndoContext

public final class ResourceUndoContext
extends Object
implements IUndoContext

An IUndoContext that tags an EMF operation with a resource affected by it. Two resource contexts match if and only if they reference the same Resource instance. An operation may have any number of distinct resource contexts.

The determination of which resource is affected by any atomic EMF change is obvious, except for the case of cross-resource reference changes. When a cross-resource reference is added or removed, then both the referencing and referenced resources are considered to be affected, even if the reference is unidirectional. The assumption is that even without the back-reference, there is an implicit dependency in that direction.


Constructor Summary
ResourceUndoContext ( TransactionalEditingDomain domain, Resource resource)
          Initializes me with the editing domain that owns a resource and the resource that I represent.
 
Method Summary
 boolean equals ( Object o)
          I am equal to other ResourceUndoContexts on the same resource as mine.
static  Set< Resource> getAffectedResources ( IUndoableOperation operation)
          Extracts the set of EMF Resources affected by the specified operation, from the ResourceUndoContexts attached to it.
static  Set< Resource> getAffectedResources ( List<? extends Notification> notifications)
          Deprecated. Since the 1.3 release, use the IResourceUndoContextPolicy.getContextResources(IUndoableOperation, List) method of the editing domain's resource undo-context policy, instead
  TransactionalEditingDomain getEditingDomain ()
          Obtains the editing domain that manages my resource.
  String getLabel ()
           
  Resource getResource ()
          Obtains the resource that I represent.
 int hashCode ()
           
 boolean matches ( IUndoContext context)
          I match another context if it is a ResourceUndoContext representing the same resource as I.
  String toString ()
           
 
Methods inherited from class java.lang. Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
 

Constructor Detail

ResourceUndoContext

public ResourceUndoContext(
TransactionalEditingDomain domain,
                           
Resource resource)
Initializes me with the editing domain that owns a resource and the resource that I represent.

Parameters:
domain - the editing domain
resource - the resource that I represent
Method Detail

getLabel

public 
String getLabel()
Specified by:
getLabel in interface IUndoContext

matches

public boolean matches(
IUndoContext context)
I match another context if it is a ResourceUndoContext representing the same resource as I.

Specified by:
matches in interface IUndoContext

equals

public boolean equals(
Object o)
I am equal to other ResourceUndoContexts on the same resource as mine.

Overrides:
equals in class Object

hashCode

public int hashCode()
Overrides:
hashCode in class Object

getResource

public 
Resource getResource()
Obtains the resource that I represent.

Returns:
my resource

getEditingDomain

public final 
TransactionalEditingDomain getEditingDomain()
Obtains the editing domain that manages my resource.

Returns:
my editing domain

getAffectedResources

public static 
Set<
Resource> getAffectedResources(
List<? extends 
Notification> notifications)
Deprecated. Since the 1.3 release, use the IResourceUndoContextPolicy.getContextResources(IUndoableOperation, List) method of the editing domain's resource undo-context policy, instead

Analyzes a list of notifications to extract the set of Resources affected by the changes.

Parameters:
notifications - a list of Notifications indicating changes in a resource set
Returns:
the resources affected by the specified notifications. The resulting set should be treated as unmodifiable

getAffectedResources

public static 
Set<
Resource> getAffectedResources(
IUndoableOperation operation)
Extracts the set of EMF Resources affected by the specified operation, from the ResourceUndoContexts attached to it.

Parameters:
operation - an undoable operation
Returns:
the Resources that it affects, or an empty set if none. The resulting set should be treated as unmodifiable

toString

public 
String toString()
Overrides:
toString in class Object

Copyright 2002, 2007 IBM Corporation and others.
All Rights Reserved.


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