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Re: [tycho-user] Java Annotations problem 
..classpath is an IDE-specific and derived file so it's not taken into account by the headless Tycho build (as opposed to e.g. build.properties).

tycho is using the batch compiler CLI so you should be able to pass in an "-annotationpath" argument

https://help.eclipse.org/neon/index.jsp?topic=%2Forg.eclipse.jdt.doc.user%2Ftasks%2Ftask-using_batch_compiler.htm

https://eclipse.org/tycho/sitedocs/tycho-compiler-plugin/compile-mojo.html#compilerArgs

sth like

        <plugin>
          <groupId>org.eclipse.tycho</groupId>
          <artifactId>tycho-compiler-plugin</artifactId>
          <version>${tycho-version}</version>
          <configuration>
			<compilerArgs>
                 <arg>-annotationpath</arg>
                 <arg>PATH/TO/ANNOTATIONS</arg>
			</compilerArgs>
          </configuration>
        </plugin>

you may want to use maven variables ${project.basedir} or similar for the path.

Regards,
Jan






On 13.10.17, 13:43, "tycho-user-bounces@xxxxxxxxxxx on behalf of Ed Willink" <tycho-user-bounces@xxxxxxxxxxx on behalf of ed@xxxxxxxxxxxxx> wrote:

    Hi
    
    https://repo.eclipse.org/ seems to be the way to go. Maven central will 
    never be up to date.
    
    Unfortunately it makes no difference, but at least I have the same 
    plugins interactively and cached.
    
    The custom Java annotations are configured in the .classpath file
    
    <?xml version="1.0" encoding="UTF-8"?>
    <classpath>
         <classpathentry kind="con" 
    path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8">
             <attributes>
                 <attribute name="annotationpath" 
    value="/org.eclipse.ocl.pivot/annotations"/>
             </attributes>
         </classpathentry>
         <classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins">
             <attributes>
                 <attribute name="annotationpath" 
    value="/org.eclipse.ocl.pivot/annotations"/>
             </attributes>
         </classpathentry>
         <classpathentry kind="src" path="emf-gen"/>
         <classpathentry kind="src" path="src"/>
         <classpathentry kind="output" path="bin"/>
    </classpath>
    
    If I comment out the <attributes> clauses, I see similar diagnostics in 
    the JDT editor as in the Tycho compile. It would appear that the 
    attributes are ignored by a Tycho compile, or do they too have to come 
    from Maven central?
    
         Regards
    
             Ed Willink
    
    
    
    On 13/10/2017 11:25, Sievers, Jan wrote:
    > unfortunately JDT binaries are not on maven central, details see [1]
    > If you want newer JDT maven artifacts, I guess you will have to add an eclipse.org maven repo to your pom.xml or settings.xml
    >
    > At least that's what eclipse platform seems to be doing
    >
    > https://github.com/eclipse/eclipse.platform.releng.aggregator/blob/2df84b9e959fdc0476113913dd1aa4db1a14b0d4/eclipse-platform-parent/pom.xml#L193-L202
    >
    >
    > Regards
    > Jan
    >
    >
    > [1] https://bugs.eclipse.org/bugs/show_bug.cgi?id=510198
    >
    > On 13.10.17, 12:02, "tycho-user-bounces@xxxxxxxxxxx on behalf of Ed Willink" <tycho-user-bounces@xxxxxxxxxxx on behalf of ed@xxxxxxxxxxxxx> wrote:
    >
    >      Hi
    >      Thanks. The bleeding edge of JDT annotations is pretty bloody.
    >      It appears that
    >      Buckmister / Tycho 0.26.0 predate the custom annotation support / nullable-non-null return checks. No problems.
    >      
    >      Tycho 1.0.0 is in the middle of experimental functionality. Spurious problems.
    >      
    >      Oxygen JDT is useable. Only minor problems.
    >      
    >      ---
    >      I have succeeded in setting cbi-jdt-version/cbi-jdt-apt-version in so far as I get errors reporting that the override versions are not found.
    >      I can force the correct versions to be pulled from the Oxygen release but it appears that Tycho insists on using versions that come from (but are not in) Maven central. The platform is ignored.
    >      
    >      i.e. my repo shows a -SNAPSHOT for my explicit forced load but a -V2017... for the failed Maven access.
    >      
    >      Any clues?
    >      
    >      -----
    >      
    >      How about a use platform JDT configuration option?
    >      
    >          Regards
    >              Ed Willink
    >      
    >      
    >      On 13/10/2017 08:08, Sievers, Jan wrote:
    >      
    >      
    >      What is the underlying JDT in 0.26.0 / 1.0.0?
    >      
    >      https://github.com/eclipse/tycho/blob/tycho-0.26.0/pom.xml#L95https://github.com/eclipse/tycho/blob/tycho-1.0.0/pom.xml#L95
    >      
    >      
    >          Is it controllable?
    >      
    >      you can override the default JDT/APT artifacts used (although I don't think this is the solution to the problem at hand). Make sure they match though. See e.g.
    >      https://github.com/eclipse/eclipse.platform.releng.aggregator/blob/2df84b9e959fdc0476113913dd1aa4db1a14b0d4/eclipse-platform-parent/pom.xml#L436-L446
    >      
    >      
    >          Is there some configuration magic for Java annotation paths?
    >      
    >      not that I know of, unless you are talking about annotation processing to generate sources, see
    >      https://eclipse.org/tycho/sitedocs/tycho-compiler-plugin/compile-mojo.html#annotationProcessorshttps://eclipse.org/tycho/sitedocs/tycho-compiler-plugin/compile-mojo.html#generatedSourcesDirectory
    >      
    >      
    >      The point that you are getting different errors/warnings may be simply related to your compiler errors/warnings configuration.
    >      Since 1.0.0 .settings/org.eclipse.jdt.core.prefs is used by default, see announcement
    >      https://wiki.eclipse.org/Tycho/Release_Notes/1.0.0
    >      
    >      Jan
    >      
    >      
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