[ 
http://jira.codehaus.org/browse/MSHARED-80?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Herve Boutemy updated MSHARED-80:
---------------------------------

    Description: 
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

{code:java}//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");{code}





  was:
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");






> 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
>            Assignee: Mark Hobson
>            Priority: Critical
>         Attachments: simple-project.zip
>
>
> 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
> {code:java}//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");{code}

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