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Posted to issues@maven.apache.org by "Cedric Beust (JIRA)" <ji...@apache.org> on 2017/04/08 17:00:43 UTC
[jira] [Comment Edited] (MRESOLVER-21) Maven Resolver trying to
resolve optional dependencies
[ https://issues.apache.org/jira/browse/MRESOLVER-21?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15961888#comment-15961888 ]
Cedric Beust edited comment on MRESOLVER-21 at 4/8/17 5:00 PM:
---------------------------------------------------------------
Digging into the rabbit hole further.
Here is the lovely dependency that JCenter has:
http://jcenter.bintray.com/commons-logging/commons-logging/99.0-does-not-exist/
The parent dependency is `jasperreports/jasperreports/2.0.5/jasperreports-2.0.5.pom` and it depends on `commons-logging` with:
```
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>[1.0,)</version>
<scope>compile</scope>
</dependency>
```
It's a version range, so Maven Resolver takes the highest it can find on JCenter, which is... 99-doesnt-exist. And boom.
was (Author: cbeust):
Digging into the rabbit hole further.
Here is the lovely dependency that JCenter has:
http://jcenter.bintray.com/commons-logging/commons-logging/99.0-does-not-exist/
The parent dependency is `jasperreports/jasperreports/2.0.5/jasperreports-2.0.5.pom` and it depends on `commons-logging` with:
```
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>[1.0,)</version>
<scope>compile</scope>
</dependency>
```
So it's a version range, so Maven Resolver takes the highest it can find on JCenter, which is... 99-doesnt-exist. And boom.
> Maven Resolver trying to resolve optional dependencies
> ------------------------------------------------------
>
> Key: MRESOLVER-21
> URL: https://issues.apache.org/jira/browse/MRESOLVER-21
> Project: Maven Resolver
> Issue Type: Bug
> Components: resolver
> Reporter: Cedric Beust
>
> I modified the `ResolveTransitiveDependencies.java` example in two ways:
> - Modified the id to `"org.springframework:spring-context-support:2.5.6.SEC03"`
> - Replaced the filter with one that excludes optional dependencies
> I'm including the full code below.
> Despite that, `system.resolveDependencies()` fails with a `DependencyResolutionException when trying to resolve a bunch of optional dependencies, sugh as `jasperreports`.
> Head of the stack trace:
> {noformat}org.eclipse.aether.resolution.DependencyResolutionException: Failed to collect dependencies at org.springframework:spring-context-support:jar:2.5.6.SEC03 -> jasperreports:jasperreports:jar:2.0.5 -> commons-logging:commons-logging:jar:99.0-does-not-exist
> at org.eclipse.aether.internal.impl.DefaultRepositorySystem.resolveDependencies(DefaultRepositorySystem.java:380)
> at org.apache.maven.resolver.examples.ResolveTransitiveDependencies.main(ResolveTransitiveDependencies.java:71)
> Caused by: org.eclipse.aether.collection.DependencyCollectionException: Failed to collect dependencies at org.springframework:spring-context-support:jar:2.5.6.SEC03 -> jasperreports:jasperreports:jar:2.0.5 -> commons-logging:commons-logging:jar:99.0-does-not-exist
> at org.eclipse.aether.internal.impl.DefaultDependencyCollector.collectDependencies(DefaultDependencyCollector.java:291)
> at org.eclipse.aether.internal.impl.DefaultRepositorySystem.resolveDependencies(DefaultRepositorySystem.java:341)
> ... 1 more
> Caused by: org.eclipse.aether.resolution.ArtifactDescriptorException: Failed to read artifact descriptor for commons-logging:commons-logging:jar:99.0-does-not-exist{noformat}
> {code:java}
> public static void main( String[] args )
> throws Exception
> {
> System.out.println( "------------------------------------------------------------" );
> System.out.println( ResolveTransitiveDependencies.class.getSimpleName() );
> RepositorySystem system = Booter.newRepositorySystem();
> RepositorySystemSession session = Booter.newRepositorySystemSession( system );
> Artifact artifact = new DefaultArtifact( "org.springframework:spring-context-support:2.5.6.SEC03" );
> DependencyFilter classpathFlter = DependencyFilterUtils.classpathFilter( JavaScopes.COMPILE );
> DependencyFilter optionalFilter = new DependencyFilter() {
> @Override
> public boolean accept(DependencyNode dependencyNode, List<DependencyNode> list) {
> return ! dependencyNode.getDependency().getOptional();
> }
> };
> CollectRequest collectRequest = new CollectRequest();
> collectRequest.setRoot( new Dependency( artifact, JavaScopes.COMPILE ) );
> collectRequest.setRepositories( Booter.newRepositories( system, session ) );
> DependencyRequest dependencyRequest = new DependencyRequest( collectRequest, optionalFilter );
> try {
> List<ArtifactResult> artifactResults =
> system.resolveDependencies(session, dependencyRequest).getArtifactResults();
> for (ArtifactResult artifactResult : artifactResults) {
> System.out.println(artifactResult.getArtifact() + " resolved to "
> + artifactResult.getArtifact().getFile());
> }
> } catch(Exception ex) {
> ex.printStackTrace();
> }
> }
> {code}
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