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From Hervé BOUTEMY <herve.bout...@free.fr>
Subject Re: Maven Compat + Maven 3.0 Plugin Part 1: Mercury
Date Sun, 08 Mar 2015 10:59:20 GMT
if such little API fixes the issue for most use cases, that would be great

because another more extreme solution would be to use Eclipse Aether, then 
have Maven 3.2 as prerequisite: if we can avoid it, that would be great

Regards,

Hervé

Le dimanche 8 mars 2015 11:42:01 Robert Scholte a écrit :
> Seems like we need the same kind of solution as done with the Dependency
> Tree.
> I've introduced a new shared component: maven-artifact-transfer
> 
> At least the following plugins are nominated to use this:
> maven-install-plugin
> maven-deploy-plugin
> maven-invoker-plugin
> 
> thanks,
> Robert
> 
> Op Sat, 07 Mar 2015 16:04:41 +0100 schreef Robert Scholte
> 
> <rfscholte@apache.org>:
> > Hi,
> > 
> > when we start requiring Maven 3.0 for our plugins, IMO they should all
> > work *without* depending on Maven Compat.
> > I've tried to do this for the maven-invoker-plugin and hit the first
> > issue.
> > They all have to do with artifacts: ArtifactInstaller,
> > ArtifactRepository, ArtifactRepositoryFactory, ArtifactResolver.
> > The original code doesn't describe what to do, but after some digging I
> > found this:
> > 
> > https://cwiki.apache.org/confluence/display/MAVEN/Compatibility+with+Maven
> > +2.x
> > 
> > bq.
> > 
> > 	Maven Artifact
> > 	
> > 	Maven Artifact will be entirely extricated from the core of Maven 3.x
> > 
> > and replaced with Mercury, but we will make a best effort to
> > 
> > 	 ensure the compatibility of plugins that use Maven Artifact. There
> > 
> > are, however, components and classes that are just so broken or conflict
> > 
> > 	 with standard ways of doing resolution and conflict reduction that we
> > 
> > can't support them.
> > 
> > 	Supported Compatibility
> > 	•org.apache.maven.artifact.deployer.ArtifactDeployer
> > 	•org.apache.maven.artifact.factory.ArtifactFactory
> > 	•org.apache.maven.artifact.handler.ArtifactHandler
> > 	•org.apache.maven.artifact.installer.ArtifactInstaller
> > 	•org.apache.maven.artifact.manager.WagonManager (1)
> > 	•org.apache.maven.artifact.repository.ArtifactRepository
> > 	•org.apache.maven.artifact.repository.ArtifactRepositoryPolicy
> > 	•org.apache.maven.artifact.repository.ArtifactRepositoryFactory
> > 	•org.apache.maven.artifact.repository.layout.ArtifactRepositoryLayout
> > 	•org.apache.maven.artifact.resolver.ArtifactResolver
> > 	•org.apache.maven.artifact.resolver.filter.ArtifactFilter
> > 	•org.apache.maven.artifact.resolver.filter.Artifact
> > 	
> > 	(1) In r746285 various methods have been removed from the WagonManager
> > 
> > which breaks the maven-project-info-reports-plugin, the
> > 
> > 	 maven-site-plugin and the maven-stage-plugin, e.g. due to a linkage
> > 
> > error on getAuthentaticationInfo().
> > 
> > 	Unsupported Compatibility
> > 	•org.apache.maven.artifact.metadata.ArtifactMetadataSource
> > 	•org.apache.maven.artifact.metadata.ResolutionGroup
> > 	•org.apache.maven.artifact.repository.metadata.*
> > 	•org.apache.maven.artifact.resolver.ResolutionNode
> > 	•org.apache.maven.artifact.resolver.ResolutionListener
> > 	•org.apache.maven.artifact.resolver.metadata.*
> > 	•org.apache.maven.artifact.resolver.transform.*
> > 	•org.apache.maven.artifact.resolver.versioning.*
> > 
> > Mercury? I guess some of it is now part of Aether, but I think we should
> > keep the abstraction layer (remember the issues we got Aether moved from
> > Sonatype to Eclipse and the amount of workarounds).
> > What to do? Move them back, make new APIs for Maven4, like
> > ArtifactTransferor?
> > 
> > My first conclusion is that we can't make these plugins Maven3
> > compatible without the maven-compat, unless we embed the classes in the
> > plugin.
> > 
> > thanks,
> > Robert
> > 
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