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Correct way of migration from old version to new one [message #1695784]

Tue, 19 May 2015 05:18

Eclipse User

Hello All

I have a tested application that based on version 2.7.3 of xtext. Some part of code is autogenerated by xtext. Configuration file like plugin.xml contains references to 2.7.3 plugins. How can I provide safety migration between two version 2.7.3 and 2.8.x? I would not like create new projects and moving manually my code to new project. Is there more safety way?

Thanks
Alexander

Re: Correct way of migration from old version to new one [message #1695790 is a reply to message #1695784]

Tue, 19 May 2015 06:08

Eclipse User

Hi

Xtext is not not bidirectionally compatible, new editor on old run-time/
on editor on new-run-time. However many permutations work.

If you want fuller compatibility have a look at
https://bugs.eclipse.org/bugs/show_bug.cgi?id=460978 and
org.eclipse.ocl.examples.build.utilities.BackportToXtext_2_3_1.java used
to enable Xtext 2.9 generated OCL editors to run on an Xtext 2.3.1 platform.

Since Xtext endeavours to follow Eclipse backward compatibility
guidelines, your plugins should specify a lower bound that you know to
work, e.g. 2.7.3 and an upper bound of the next major version (3.0.0) .

Regards

Ed Willink

On 19/05/2015 10:18, Alex Gor wrote:
> Hello All
>
> I have a tested application that based on version 2.7.3 of xtext. Some
> part of code is autogenerated by xtext. Configuration file like
> plugin.xml contains references to 2.7.3 plugins. How can I provide
> safety migration between two version 2.7.3 and 2.8.x? I would not like
> create new projects and moving manually my code to new project. Is
> there more safety way?
>
> Thanks
> Alexander
>

Re: Correct way of migration from old version to new one [message #1695811 is a reply to message #1695790]

Tue, 19 May 2015 09:14

Eclipse User

I see your answer. But practically can I do the following
For example
- I download and install new boundle of Eclipse+new release of Xtext.
- create new workspace
- change upper bound of xtext's plugins

then

import my project to new workspace

Does it help me?

Re: Correct way of migration from old version to new one [message #1696122 is a reply to message #1695811]

Fri, 22 May 2015 04:23

Eclipse User

I did steps that mentioned before. Compilation completed with success. But I cannot run appliccation due to following errors

org.osgi.framework.BundleException: Could not resolve module: com.psl.atom [149]
  Unresolved requirement: Require-Bundle: org.eclipse.xtext.xbase; bundle-version="[2.8.2,3.0.0)"; visibility:="reexport"; resolution:="optional"
  Unresolved requirement: Require-Bundle: org.eclipse.xtext.generator; bundle-version="[2.8.2,3.0.0)"; resolution:="optional"
  Unresolved requirement: Require-Bundle: org.eclipse.emf.codegen.ecore; resolution:="optional"
  Unresolved requirement: Require-Bundle: org.eclipse.emf.mwe2.launch; resolution:="optional"
  Unresolved requirement: Require-Bundle: org.eclipse.xtext.builder; bundle-version="[2.8.2,3.0.0)"
    -> Bundle-SymbolicName: org.eclipse.xtext.builder; bundle-version="2.8.2.v201504100559"; singleton:="true"
       org.eclipse.xtext.builder [43]
         Unresolved requirement: Require-Bundle: org.eclipse.xtext.ui; bundle-version="[2.8.0,3.0.0)"
           -> Bundle-SymbolicName: org.eclipse.xtext.ui; bundle-version="2.8.2.v201504100559"; singleton:="true"
              org.eclipse.xtext.ui [104]
                Unresolved requirement: Require-Bundle: org.eclipse.xtext.ide; bundle-version="[2.8.0,3.0.0)"

I checked required library org.eclipse.xtext.ide is located in plugins folder. What is nature of this issue?

[Updated on: Fri, 22 May 2015 05:09] by Moderator

Re: Correct way of migration from old version to new one [message #1696130 is a reply to message #1696122]

Fri, 22 May 2015 05:12

Eclipse User

Please make sure that xtext.ide is also listed in your launch config.

Best,
Sebastian
--
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