Re: [eclipse-dev] [cross-project-issues-dev] Eclipse Project Photon (4.8

["Daniel Megert" <daniel_megert@xxxxxxxxxx>]

Hi Ed

As you can see
from the report, not all bundles are at 1,8.

Since the report
already needs to analyze each bundle, it should be easy to generate a report
that's similar to the appendix, but would be more complete. I've filed
https://bugs.eclipse.org/529710for that.

Dani



From:
       Ed
Willink <ed@xxxxxxxxxxxxx>
To:
       eclipse-dev@xxxxxxxxxxx
Date:
       12.01.2018
10:34
Subject:
       Re:
[eclipse-dev] [cross-project-issues-dev] Eclipse Project Photon (4.8) Plan
Updated
Sent
by:        eclipse-dev-bounces@xxxxxxxxxxx

---

Hi Dani
I was trying to understand our ongoing
Java 5 usage. Investigation shows that EMF is very carefully coded to support
non-OSGI Java 5 usage:

- Exceptions are caught while initializing an IWorkspaceRoot instance (to
null if no-OSGI) 
- org.eclipse.core.* dependencies are optional and so IResource and IStatus
cannot be used
This non-OSGI usage is nothing to do
with the platform, so a simple statement that all built classes are Java
8 will avoid ambiguities.
    Regards
       
Ed Willink

On 11/01/2018 13:16, Daniel Megert wrote:
Hi Ed

I'm not sure what you mean by "support". If you mean EMF can
continue to code using 1.5, then that is not an issue. However, most plug-ins
based on the Platform use the low-level bundles from the Platform like
SWT or Resources. Those require 1.8 already for Oxygen.

> Conversely could you please enumerate the hopefully very few plugins
that will have a greater than Java 8 BREE?
Currently no bundle uses Java 9 BREE. You can see the current BREE usage
in our latest I-build in the following report: http://download.eclipse.org/eclipse/downloads/drops4/I20180110-2000/buildlogs/reporeports/reports/breedata.txt.

Dani



From:        Ed
Willink <ed@xxxxxxxxxxxxx>
To:        eclipse-dev@xxxxxxxxxxx
Date:        11.01.2018
14:10
Subject:        Re:
[eclipse-dev] [cross-project-issues-dev] Eclipse Project Photon (4.8) Plan
Updated
Sent by:        eclipse-dev-bounces@xxxxxxxxxxx

---

Hi Dani
I can appreciate that maintaining the full list of minimal BREEs is a pain
and not relevant for many of the entries, however without such a list for
some plugins it is unclear to what extent the many modeling projects (EMF,
UML2, OCL, ...) that continue to claim Java 5 support are able to do so.
org.eclipse.emf.core uses org.eclipse.core.resources and so it seems to
me that unless the platform undertakes to provide Java 5 classes for org.eclipse.core.resources
and its dependencies, then all projects that depend on org.eclipse.emf.core
can only claim to be Java 8 and so should be built as Java 8. Could you
please clarify the binary compatibility of the built classes.
Thr "Portions are targeted to specific classes of operating environments,
requiring their source code to only reference facilities available in particular
class libraries (e.g. Java 5, Java 6, etc)." observation is not helpful.
If there is a Java 5 or Java 6 subsystem please identify it. If not please
clearly state that the whole platform has an at least Java 8 minimum, although
migration from legacy levels to Java 8 may not necessarily happen for Photon.
Conversely could you please enumerate the hopefully very few plugins that
will have a greater than Java 8 BREE?
    Regards
        Ed Willink




On 11/01/2018 10:50, Daniel Megert wrote:
An updated version of the Eclipse top-level project plan for the Photon
(4.8) release is now available:

http://www.eclipse.org/projects/project-plan.php?planurl=http://www.eclipse.org/eclipse/development/plans/eclipse_project_plan_4_8.xml

Notable changes are:
- The sub-project plans have been updated.
- Java 9 has been added to the target environments.
- The JRE versions have been updated.
- The appendix with the minimal BREEs has been removed.

Dani


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