| Creating/Loading (Legacy) UML Resources [message #987891] |
Wed, 28 November 2012 14:52 |
 Kenn Hussey
Messages: 1620
Registered: July 2009 |
Senior Member |
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I would like to bring your attention to some changes in UML2 which may
impact you if you happen to be programmatically creating/loading UML
resources; for all the gory details, see bug 389542 [1].
Juno
The UML editor in UML2 4.0.0 didn't properly handle legacy resources
because a file extension registration occluded the content type
registration for *.uml resources.
Juno SR1
In UML2 4.0.1, the problematic file extension registration was removed
from UMLUtil#init(ResourceSet), which fixed the UML editor (when loading
resources directly) but meant that creation of resources based on file
extension alone when using UMLResourcesUtil#init(ResourceSet), stopped
working. Support for indirectly-loaded legacy UML resources, however,
still depends on the fix in EMF for bug 390951 [2], scheduled for Juno SR2.
Juno SR2
Fixes in UML2 4.0.2 will affect clients that are using
UMLResourcesUtil#init(ResourceSet). The intention is to ensure that
behavior of Eclipse and standalone modes are equivalent; to do this,
only "local" registrations are done in UMLUtil#init(ResourceSet) (since
the global ones are already done by various plug-in manifests) and only
"global" registrations, including one for the *.uml file extension, are
done in UMLResourcesUtil#init(ResourceSet). The net effect being that
support for legacy resources and creation of UML resources based only on
file extension should work the same in both modes.
Basically, if you're looking to programmatically create/load UML
resources with UML2 4.0.2 (and releases thereafter), it's like this:
- if you want to work with (only new) UML resources in Eclipse, do nothing
- if you want support for legacy resources in Eclipse, call
UMLUtil#init(ResourceSet) with a resource set (since passing null is
essentially a no-op)
- if you want to work with (only new) UML resources standalone, call
UMLResourcesUtil#init(ResourceSet) with null (once)
- if you want support for legacy resources standalone, call
UMLResourcesUtil#init(ResourceSet) with a resource set
[1] https://bugs.eclipse.org/bugs/show_bug.cgi?id=389542
[2] https://bugs.eclipse.org/bugs/show_bug.cgi?id=390951
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