Ok I’ve found a way but it looks complex… Please let me know if there’s a
simpler way.
So I’ve copied the DefaultModelResolver.java class from maven sources (since
it’s package private I couldn’t reuse it!) into my own sources, and then used
what I mentioned below:
private void getArtifactDependenciesFromPOMFile(List<RemoteRepository>
remoteRepositories,
RepositorySystem repoSystem, RepositorySystemSession session) throws
Exception
{
ModelResolver resolver = new DefaultModelResolver(session, null, null,
this.artifactResolver,
this.versionRangeResolver, this.remoteRepositoryManager,
remoteRepositories);
DefaultModelBuildingRequest modelBuildingRequest = new
DefaultModelBuildingRequest()
.setPomFile(new File("./pom.xml"))
.setModelResolver(resolver);
ModelBuilder modelBuilder = new DefaultModelBuilderFactory().newInstance();
ModelBuildingResult modelBuildingResult =
modelBuilder.build(modelBuildingRequest);
Model model = modelBuildingResult.getEffectiveModel();
…
}
Is that the only way?
Thanks
-Vincent
> On 20 Jul 2018, at 16:56, Vincent Massol <vmas...@gmail.com> wrote:
>
> Hi guys,
>
> I’ve been trying to find how to programmatically resolve dependencies from a
> pom.xml file by using the Maven Resolver API
> (https://github.com/apache/maven-resolver).
>
> So far I’ve succeeded in resolving dependencies from an Artifact but I
> haven’t found how to do by reading from a pom.xml file.
>
> The closest I have founds is the following but it’s not working & it’s not
> using the Resolver API (and thus the passed parameters):
>
> private void getArtifactDependenciesFromPOMFile(List<RemoteRepository>
> remoteRepositories, RepositorySystem repoSystem,
> RepositorySystemSession session) throws Exception
> {
> DefaultModelBuildingRequest modelBuildingRequest = new
> DefaultModelBuildingRequest()
> .setPomFile(new File("./pom.xml”));
> ModelBuilder modelBuilder = new DefaultModelBuilderFactory().newInstance();
> ModelBuildingResult modelBuildingResult =
> modelBuilder.build(modelBuildingRequest);
> Model model = modelBuildingResult.getEffectiveModel();
> }
>
> It’s failing with:
>
> java.lang.NullPointerException: request.modelResolver cannot be null (parent
> POM org.xwiki.platform:xwiki-platform-test:10.6-SNAPSHOT and POM
> org.xwiki.platform:xwiki-platform-test-war:[unknown-version]
> (/Users/vmassol/dev/xwiki/xwiki-platform/xwiki-platform-core/xwiki-platform-test/xwiki-platform-test-war/./pom.xml))
>
> at org.apache.commons.lang3.Validate.notNull(Validate.java:225)
> at
> org.apache.maven.model.building.DefaultModelBuilder.readParentExternally(DefaultModelBuilder.java:994)
>
> I assume that’s because it needs some MavenResolver at:
>
> DefaultModelBuildingRequest modelBuildingRequest = new
> DefaultModelBuildingRequest()
> .setPomFile(new File("./pom.xml”))
> .setResolver(“… what to put here?…”)
>
> Is there another approach?
>
> Thanks
> -Vincent
>
> PS: I’ve tried using ShrinkWrap but it’s not working for me, see
> https://massol.myxwiki.org/xwiki/bin/view/Blog/ResolveMavenArtifactsShrinkWrap
>
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