NullPointer in DefaultDependencyTreeBuilder.java:93, no logger
---------------------------------------------------------------
Key: MSHARED-80
URL: http://jira.codehaus.org/browse/MSHARED-80
Project: Maven Shared Components
Issue Type: Bug
Components: maven-dependency-tree
Affects Versions: maven-dependency-tree 1.2
Environment: Windows XP 64 JDK 1.6
Reporter: MTStorm
Priority: Critical
I have a report and a mojo that seeks transversal dependencies. It shows a
nullpointer in the DefaultDependencyTreeBuilder.
I can not figure it out what is wrong sice the implementation off
DependencyTreeBuilder is assigned by Maven and I have no controll on the
logger.
Here is the code snippet
//members
/**
* Used to look up Artifacts in the remote repository.
*
* @parameter expression=
*
"${component.org.apache.maven.artifact.factory.ArtifactFactory}"
* @required
* @readonly
*/
protected org.apache.maven.artifact.factory.ArtifactFactory
artifactFactory;
/**
* Used to look up Artifacts in the remote repository.
*
* @parameter expression=
*
"${component.org.apache.maven.artifact.resolver.ArtifactResolver}"
* @required
* @readonly
*/
protected org.apache.maven.artifact.resolver.ArtifactResolver resolver;
/**
* Artifact collector, needed to resolve dependencies.
*
* @component
role="org.apache.maven.artifact.resolver.ArtifactCollector"
* @required
* @readonly
*/
protected ArtifactCollector artifactCollector;
/**
* @component
*
role="org.apache.maven.artifact.metadata.ArtifactMetadataSource"
* hint="maven"
* @required
* @readonly
*/
protected ArtifactMetadataSource artifactMetadataSource;
/**
* Dependency tree builder component.
*
* @component expression=
*
"org.apache.maven.shared.dependency.tree.DependencyTreeBuilder"
* @required
* @readonly
*/
private DependencyTreeBuilder dependencyTreeBuilder;
//sample snippet to use in report and mojo
ArtifactFilter artifactFilter = new ScopeArtifactFilter(
Artifact.SCOPE_COMPILE);
DependencyNode dn;
getLog().info("Start");
try {
dn = dependencyTreeBuilder.buildDependencyTree(
project, localRepository,
artifactFactory, artifactMetadataSource,
artifactFilter, artifactCollector);
} catch (DependencyTreeBuilderException e) {
e.printStackTrace();
getLog().error("oeps",e);
}
getLog().info("Done");
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