Re: [justj-dev] JustJ and Java 11

[Alois Zoitl <alois.zoitl@xxxxxx>]

On Fri, 2020-06-12 at 21:20 +0200, Ed Merks wrote:
> Does something explicitly require a.jre.javase?
AFAIK no. 4diac IDE is an Eclipse workbench based RCP. I searched and in no place found an explicit reference to a.jre.javase or a.jre.

Any tips what could pull it in?

grepping over our code base I found in the product file:
   <vm>
      <linux include="false">org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11</linux>
      <macos include="false">org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11</macos>
      <windows include="false">org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11</windows>
   </vm>

and our plugins have a .classpath file:
   <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11"/>


I hope these are not too dumb questions but I see that you don't have these in the sample product. Do we have these wrongly?

Thanks a lot for you help,
Alois



> The JustJ JRE IUs have
> a negative requirement on a.jre.javase and on a.jre, so you can't
> explicitly require both.  In general I would expect nothing explicitly
> references either a.jre.javase nor a.jre. These are "fake/synthetic" IUs
> whose only purpose is to satisfy BREE requirements and package imports
> at p2 resolution time that are satisfied by a real JRE at runtime via
> OSGi.  The JustJ JRE IUs will also satisfy BREE and package imports so
> definitely no explicit use of a.jre.javase should be present.
>
> On 12.06.2020 17:31, Alois Zoitl wrote:
> > Hi,
> >
> > we recently updated Eclipse 4diac to Java 11 and as next step we wanted to bundle JustJ with it. However following the documentation and add the update site to
> > our target platform and the product file, Eclipse Tycho can not resolve the dependencies. See Maven output below.
> >
> > As I'm not that good with maven I firstly wanted to check if the problem is more likely on our side or on the JustJ side.
> >
> > Thanks in advance,
> > Alois
> >
> >
> >
> >
> > [INFO] Adding repository https://download.eclipse.org/justj/sandbox/jres/14/updates/nightly/latest
> > [INFO] Fetching p2.index from https://download.eclipse.org/justj/sandbox/jres/14/updates/nightly/N202006111504/
> > [ERROR] Cannot resolve target definition:
> > [ERROR]   Software being installed: a.jre.javase 11.0.0
> > [ERROR]   Software being installed: org.eclipse.justj.openjdk.hotspot.jre.full.stripped.feature.group 14.0.1.v20200611-1504
> > [ERROR]   Cannot satisfy dependency: org.eclipse.justj.openjdk.hotspot.jre.full.stripped 14.0.1.v20200611-1504 depends on: org.eclipse.equinox.p2.iu;
> > a.jre.javase 0.0.0
> > [ERROR]   Cannot satisfy dependency: org.eclipse.justj.openjdk.hotspot.jre.full.stripped.feature.group 14.0.1.v20200611-1504 depends on:
> > org.eclipse.equinox.p2.iu; org.eclipse.justj.openjdk.hotspot.jre.full.stripped [14.0.1.v20200611-1504,14.0.1.v20200611-1504]
> > [ERROR]
> > [ERROR] Failed to resolve target definition /home/az/prog/4diac-
> > ide_dev/org.eclipse.4diac.ide/plugins/org.eclipse.fordiac.ide.product/org.eclipse.fordiac.ide.product.target: See log for details -> [Help 1]
> >
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