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Re: [cross-project-issues-dev] Xtext clients on the train
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Hi
The Xtext 2.0 changes make me very confused about what API compatibility
means. Can someone clarify?
On the one hand,
http://wiki.eclipse.org/Eclipse/API_Central/Deprecation_Policy, suggests
that API removal takes a couple of releases. On the other hand, a major
release is allowed to change API, and a change is potentially nastier to
clients than a removal since there may be inadequate compiler/loader
diagnosis.
In the particular case of Xtext, I think there may be a problem for the
wider community.
(For MDT/OCL, the associated MDT/OCL code has significant changes so it
can hopefully adapt to the new API without too much difficulty.)
However, Xtext has become very popular very rapidly and so there are
many Eclipse users with Xtext 1.0 products. It seems undesirable that
these are all broken in Indigo. The original developers can grumble and
rebuild, but third party users are in trouble until redistribution from
the developers occurs.
I suggest that now that Xtext 2.0 has established new more advanced
APIs, that the old 1.0 APIs be reinstated. e.g. The new ILeafNode should
extend a deprecated LeafNode interface that emulates the removed
LeafNode. NodeUtil could be re-instated and deprecated with delegation
to new methods. Since package paths have changed this should not be too
difficult. This would enable 1.0 APIs to persist through perhaps Xtext
2.0, 2.1 and vanish in perhaps 3.0.
Regards
Ed Willink
On 17/01/2011 07:38, Sven Efftinge wrote:
Hi all,
for M5 we (Xtext) will promote the 2.0 stream to the indigo builds, which contains some API changes.
We would like to help any clients updating/migrating their code and would kindly ask to inform us if you use Xtext somehow.
I know the Ecore Tools do and we are already in contact with Ed Willink.
Are there any other projects consuming Xtext?
Best Regards,
Sven
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