http://git-wip-us.apache.org/repos/asf/maven/blob/8972072e/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/MavenRepositorySystemUtils.java
----------------------------------------------------------------------
diff --git 
a/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/MavenRepositorySystemUtils.java
 
b/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/MavenRepositorySystemUtils.java
new file mode 100644
index 0000000..1b11cb3
--- /dev/null
+++ 
b/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/MavenRepositorySystemUtils.java
@@ -0,0 +1,145 @@
+package org.apache.maven.repository.internal;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import java.util.Properties;
+
+import org.eclipse.aether.DefaultRepositorySystemSession;
+import org.eclipse.aether.artifact.DefaultArtifactType;
+import org.eclipse.aether.collection.DependencyGraphTransformer;
+import org.eclipse.aether.collection.DependencyManager;
+import org.eclipse.aether.collection.DependencySelector;
+import org.eclipse.aether.collection.DependencyTraverser;
+import org.eclipse.aether.impl.ArtifactDescriptorReader;
+import org.eclipse.aether.impl.DefaultServiceLocator;
+import org.eclipse.aether.impl.MetadataGeneratorFactory;
+import org.eclipse.aether.impl.VersionRangeResolver;
+import org.eclipse.aether.impl.VersionResolver;
+import org.eclipse.aether.util.artifact.DefaultArtifactTypeRegistry;
+import org.eclipse.aether.util.graph.manager.ClassicDependencyManager;
+import org.eclipse.aether.util.graph.selector.AndDependencySelector;
+import org.eclipse.aether.util.graph.selector.ExclusionDependencySelector;
+import org.eclipse.aether.util.graph.selector.OptionalDependencySelector;
+import org.eclipse.aether.util.graph.selector.ScopeDependencySelector;
+import 
org.eclipse.aether.util.graph.transformer.ChainedDependencyGraphTransformer;
+import org.eclipse.aether.util.graph.transformer.ConflictResolver;
+import org.eclipse.aether.util.graph.transformer.JavaDependencyContextRefiner;
+import org.eclipse.aether.util.graph.transformer.JavaScopeDeriver;
+import org.eclipse.aether.util.graph.transformer.JavaScopeSelector;
+import org.eclipse.aether.util.graph.transformer.NearestVersionSelector;
+import org.eclipse.aether.util.graph.transformer.SimpleOptionalitySelector;
+import org.eclipse.aether.util.graph.traverser.FatArtifactTraverser;
+import org.eclipse.aether.util.repository.SimpleArtifactDescriptorPolicy;
+
+/**
+ * A utility class to assist in setting up a Maven-like repository system. 
<em>Note:</em> This component is meant to
+ * assist those clients that employ the repository system outside of an IoC 
container, Maven plugins should instead
+ * always use regular dependency injection to acquire the repository system.
+ *
+ * @author Benjamin Bentmann
+ */
+public final class MavenRepositorySystemUtils
+{
+
+    private MavenRepositorySystemUtils()
+    {
+        // hide constructor
+    }
+
+    /**
+     * Creates a new service locator that already knows about all service 
implementations included in this library. To
+     * acquire a complete repository system, clients need to add some 
repository connectors for remote transfers.
+     *
+     * @return The new service locator, never {@code null}.
+     */
+    public static DefaultServiceLocator newServiceLocator()
+    {
+        DefaultServiceLocator locator = new DefaultServiceLocator();
+        locator.addService( ArtifactDescriptorReader.class, 
DefaultArtifactDescriptorReader.class );
+        locator.addService( VersionResolver.class, 
DefaultVersionResolver.class );
+        locator.addService( VersionRangeResolver.class, 
DefaultVersionRangeResolver.class );
+        locator.addService( MetadataGeneratorFactory.class, 
SnapshotMetadataGeneratorFactory.class );
+        locator.addService( MetadataGeneratorFactory.class, 
VersionsMetadataGeneratorFactory.class );
+        return locator;
+    }
+
+    /**
+     * Creates a new Maven-like repository system session by initializing the 
session with values typical for
+     * Maven-based resolution. In more detail, this method configures settings 
relevant for the processing of dependency
+     * graphs, most other settings remain at their generic default value. Use 
the various setters to further configure
+     * the session with authentication, mirror, proxy and other information 
required for your environment.
+     *
+     * @return The new repository system session, never {@code null}.
+     */
+    public static DefaultRepositorySystemSession newSession()
+    {
+        DefaultRepositorySystemSession session = new 
DefaultRepositorySystemSession();
+
+        DependencyTraverser depTraverser = new FatArtifactTraverser();
+        session.setDependencyTraverser( depTraverser );
+
+        DependencyManager depManager = new ClassicDependencyManager();
+        session.setDependencyManager( depManager );
+
+        DependencySelector depFilter =
+            new AndDependencySelector( new ScopeDependencySelector( "test", 
"provided" ),
+                                       new OptionalDependencySelector(), new 
ExclusionDependencySelector() );
+        session.setDependencySelector( depFilter );
+
+        DependencyGraphTransformer transformer =
+            new ConflictResolver( new NearestVersionSelector(), new 
JavaScopeSelector(),
+                                  new SimpleOptionalitySelector(), new 
JavaScopeDeriver() );
+        new ChainedDependencyGraphTransformer( transformer, new 
JavaDependencyContextRefiner() );
+        session.setDependencyGraphTransformer( transformer );
+
+        DefaultArtifactTypeRegistry stereotypes = new 
DefaultArtifactTypeRegistry();
+        stereotypes.add( new DefaultArtifactType( "pom" ) );
+        stereotypes.add( new DefaultArtifactType( "maven-plugin", "jar", "", 
"java" ) );
+        stereotypes.add( new DefaultArtifactType( "jar", "jar", "", "java" ) );
+        stereotypes.add( new DefaultArtifactType( "ejb", "jar", "", "java" ) );
+        stereotypes.add( new DefaultArtifactType( "ejb-client", "jar", 
"client", "java" ) );
+        stereotypes.add( new DefaultArtifactType( "test-jar", "jar", "tests", 
"java" ) );
+        stereotypes.add( new DefaultArtifactType( "javadoc", "jar", "javadoc", 
"java" ) );
+        stereotypes.add( new DefaultArtifactType( "java-source", "jar", 
"sources", "java", false, false ) );
+        stereotypes.add( new DefaultArtifactType( "war", "war", "", "java", 
false, true ) );
+        stereotypes.add( new DefaultArtifactType( "ear", "ear", "", "java", 
false, true ) );
+        stereotypes.add( new DefaultArtifactType( "rar", "rar", "", "java", 
false, true ) );
+        stereotypes.add( new DefaultArtifactType( "par", "par", "", "java", 
false, true ) );
+        session.setArtifactTypeRegistry( stereotypes );
+
+        session.setArtifactDescriptorPolicy( new 
SimpleArtifactDescriptorPolicy( true, true ) );
+
+        final Properties systemProperties = new Properties();
+        
+        // MNG-5670 guard against ConcurrentModificationException
+        // MNG-6053 guard against key without value
+        Properties sysProp = System.getProperties();
+        synchronized ( sysProp )
+        {
+            systemProperties.putAll( sysProp );
+        }
+
+        session.setSystemProperties( systemProperties );
+        session.setConfigProperties( systemProperties );
+
+        return session;
+    }
+
+}

http://git-wip-us.apache.org/repos/asf/maven/blob/8972072e/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/MavenResolverModule.java
----------------------------------------------------------------------
diff --git 
a/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/MavenResolverModule.java
 
b/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/MavenResolverModule.java
new file mode 100644
index 0000000..070b91c
--- /dev/null
+++ 
b/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/MavenResolverModule.java
@@ -0,0 +1,70 @@
+package org.apache.maven.repository.internal;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Set;
+import javax.inject.Named;
+import javax.inject.Singleton;
+import com.google.inject.AbstractModule;
+import com.google.inject.Provides;
+import com.google.inject.name.Names;
+import org.apache.maven.model.building.DefaultModelBuilderFactory;
+import org.apache.maven.model.building.ModelBuilder;
+import org.eclipse.aether.impl.ArtifactDescriptorReader;
+import org.eclipse.aether.impl.MetadataGeneratorFactory;
+import org.eclipse.aether.impl.VersionRangeResolver;
+import org.eclipse.aether.impl.VersionResolver;
+import org.eclipse.aether.impl.guice.AetherModule;
+
+public final class MavenResolverModule
+    extends AbstractModule
+{
+
+    @Override
+    protected void configure()
+    {
+        install( new AetherModule() );
+        bind( ArtifactDescriptorReader.class ).to( 
DefaultArtifactDescriptorReader.class ).in( Singleton.class );
+        bind( VersionResolver.class ).to( DefaultVersionResolver.class ).in( 
Singleton.class );
+        bind( VersionRangeResolver.class ).to( 
DefaultVersionRangeResolver.class ).in( Singleton.class );
+        bind( MetadataGeneratorFactory.class ).annotatedWith( Names.named( 
"snapshot" ) )
+            .to( SnapshotMetadataGeneratorFactory.class ).in( Singleton.class 
);
+
+        bind( MetadataGeneratorFactory.class ).annotatedWith( Names.named( 
"versions" ) )
+            .to( VersionsMetadataGeneratorFactory.class ).in( Singleton.class 
);
+
+        bind( ModelBuilder.class ).toInstance( new 
DefaultModelBuilderFactory().newInstance() );
+    }
+
+    @Provides
+    @Singleton
+    Set<MetadataGeneratorFactory> provideMetadataGeneratorFactories(
+        @Named( "snapshot" ) MetadataGeneratorFactory snapshot,
+        @Named( "versions" ) MetadataGeneratorFactory versions )
+    {
+        Set<MetadataGeneratorFactory> factories = new HashSet<>( 2 );
+        factories.add( snapshot );
+        factories.add( versions );
+        return Collections.unmodifiableSet( factories );
+    }
+
+}

http://git-wip-us.apache.org/repos/asf/maven/blob/8972072e/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/MavenSnapshotMetadata.java
----------------------------------------------------------------------
diff --git 
a/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/MavenSnapshotMetadata.java
 
b/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/MavenSnapshotMetadata.java
new file mode 100644
index 0000000..e4c9a7e
--- /dev/null
+++ 
b/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/MavenSnapshotMetadata.java
@@ -0,0 +1,100 @@
+package org.apache.maven.repository.internal;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.Collection;
+
+import org.apache.maven.artifact.repository.metadata.Metadata;
+import org.eclipse.aether.artifact.Artifact;
+
+/**
+ * @author Hervé Boutemy
+ */
+abstract class MavenSnapshotMetadata
+    extends MavenMetadata
+{
+    static final String SNAPSHOT = "SNAPSHOT";
+
+    protected final Collection<Artifact> artifacts = new ArrayList<>();
+
+    protected final boolean legacyFormat;
+
+    protected MavenSnapshotMetadata( Metadata metadata, File file, boolean 
legacyFormat )
+    {
+        super( metadata, file );
+        this.legacyFormat = legacyFormat;
+    }
+
+    protected static Metadata createRepositoryMetadata( Artifact artifact, 
boolean legacyFormat )
+    {
+        Metadata metadata = new Metadata();
+        if ( !legacyFormat )
+        {
+            metadata.setModelVersion( "1.1.0" );
+        }
+        metadata.setGroupId( artifact.getGroupId() );
+        metadata.setArtifactId( artifact.getArtifactId() );
+        metadata.setVersion( artifact.getBaseVersion() );
+
+        return metadata;
+    }
+
+    public void bind( Artifact artifact )
+    {
+        artifacts.add( artifact );
+    }
+
+    public Object getKey()
+    {
+        return getGroupId() + ':' + getArtifactId() + ':' + getVersion();
+    }
+
+    public static Object getKey( Artifact artifact )
+    {
+        return artifact.getGroupId() + ':' + artifact.getArtifactId() + ':' + 
artifact.getBaseVersion();
+    }
+
+    protected String getKey( String classifier, String extension )
+    {
+        return classifier + ':' + extension;
+    }
+
+    public String getGroupId()
+    {
+        return metadata.getGroupId();
+    }
+
+    public String getArtifactId()
+    {
+        return metadata.getArtifactId();
+    }
+
+    public String getVersion()
+    {
+        return metadata.getVersion();
+    }
+
+    public Nature getNature()
+    {
+        return Nature.SNAPSHOT;
+    }
+}

http://git-wip-us.apache.org/repos/asf/maven/blob/8972072e/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/MavenWorkspaceReader.java
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diff --git 
a/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/MavenWorkspaceReader.java
 
b/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/MavenWorkspaceReader.java
new file mode 100644
index 0000000..270cf58
--- /dev/null
+++ 
b/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/MavenWorkspaceReader.java
@@ -0,0 +1,32 @@
+package org.apache.maven.repository.internal;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import org.apache.maven.model.Model;
+import org.eclipse.aether.artifact.Artifact;
+import org.eclipse.aether.repository.WorkspaceReader;
+
+public interface MavenWorkspaceReader
+    extends WorkspaceReader
+{
+
+    Model findModel( Artifact artifact );
+
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/maven/blob/8972072e/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/RelocatedArtifact.java
----------------------------------------------------------------------
diff --git 
a/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/RelocatedArtifact.java
 
b/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/RelocatedArtifact.java
new file mode 100644
index 0000000..c6ef3aa
--- /dev/null
+++ 
b/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/RelocatedArtifact.java
@@ -0,0 +1,114 @@
+package org.apache.maven.repository.internal;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import java.io.File;
+import java.util.Map;
+
+import org.apache.commons.lang3.Validate;
+import org.eclipse.aether.artifact.AbstractArtifact;
+import org.eclipse.aether.artifact.Artifact;
+
+/**
+ * @author Benjamin Bentmann
+ */
+final class RelocatedArtifact
+    extends AbstractArtifact
+{
+
+    private final Artifact artifact;
+
+    private final String groupId;
+
+    private final String artifactId;
+
+    private final String version;
+
+    public RelocatedArtifact( Artifact artifact, String groupId, String 
artifactId, String version )
+    {
+        this.artifact = Validate.notNull( artifact, "artifact cannot be null" 
);
+        // TODO Use StringUtils here
+        this.groupId = ( groupId != null && groupId.length() > 0 ) ? groupId : 
null;
+        this.artifactId = ( artifactId != null && artifactId.length() > 0 ) ? 
artifactId : null;
+        this.version = ( version != null && version.length() > 0 ) ? version : 
null;
+    }
+
+    public String getGroupId()
+    {
+        if ( groupId != null )
+        {
+            return groupId;
+        }
+        else
+        {
+            return artifact.getGroupId();
+        }
+    }
+
+    public String getArtifactId()
+    {
+        if ( artifactId != null )
+        {
+            return artifactId;
+        }
+        else
+        {
+            return artifact.getArtifactId();
+        }
+    }
+
+    public String getVersion()
+    {
+        if ( version != null )
+        {
+            return version;
+        }
+        else
+        {
+            return artifact.getVersion();
+        }
+    }
+
+    public String getClassifier()
+    {
+        return artifact.getClassifier();
+    }
+
+    public String getExtension()
+    {
+        return artifact.getExtension();
+    }
+
+    public File getFile()
+    {
+        return artifact.getFile();
+    }
+
+    public String getProperty( String key, String defaultValue )
+    {
+        return artifact.getProperty( key, defaultValue );
+    }
+
+    public Map<String, String> getProperties()
+    {
+        return artifact.getProperties();
+    }
+
+}

http://git-wip-us.apache.org/repos/asf/maven/blob/8972072e/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/RemoteSnapshotMetadata.java
----------------------------------------------------------------------
diff --git 
a/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/RemoteSnapshotMetadata.java
 
b/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/RemoteSnapshotMetadata.java
new file mode 100644
index 0000000..1e791d8
--- /dev/null
+++ 
b/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/RemoteSnapshotMetadata.java
@@ -0,0 +1,157 @@
+package org.apache.maven.repository.internal;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import java.io.File;
+import java.text.DateFormat;
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.GregorianCalendar;
+import java.util.LinkedHashMap;
+import java.util.Map;
+import java.util.TimeZone;
+
+import org.apache.maven.artifact.repository.metadata.Metadata;
+import org.apache.maven.artifact.repository.metadata.Snapshot;
+import org.apache.maven.artifact.repository.metadata.SnapshotVersion;
+import org.apache.maven.artifact.repository.metadata.Versioning;
+import org.eclipse.aether.artifact.Artifact;
+
+/**
+ * @author Benjamin Bentmann
+ */
+final class RemoteSnapshotMetadata
+    extends MavenSnapshotMetadata
+{
+    public static final String DEFAULT_SNAPSHOT_TIMESTAMP_FORMAT = 
"yyyyMMdd.HHmmss";
+
+    public static final TimeZone DEFAULT_SNAPSHOT_TIME_ZONE = 
TimeZone.getTimeZone( "Etc/UTC" );
+
+    private final Map<String, SnapshotVersion> versions = new 
LinkedHashMap<>();
+
+    public RemoteSnapshotMetadata( Artifact artifact, boolean legacyFormat )
+    {
+        super( createRepositoryMetadata( artifact, legacyFormat ), null, 
legacyFormat );
+    }
+
+    private RemoteSnapshotMetadata( Metadata metadata, File file, boolean 
legacyFormat )
+    {
+        super( metadata, file, legacyFormat );
+    }
+
+    public MavenMetadata setFile( File file )
+    {
+        return new RemoteSnapshotMetadata( metadata, file, legacyFormat );
+    }
+
+    public String getExpandedVersion( Artifact artifact )
+    {
+        String key = getKey( artifact.getClassifier(), artifact.getExtension() 
);
+        return versions.get( key ).getVersion();
+    }
+
+    @Override
+    protected void merge( Metadata recessive )
+    {
+        Snapshot snapshot;
+        String lastUpdated;
+
+        if ( metadata.getVersioning() == null )
+        {
+            DateFormat utcDateFormatter = new SimpleDateFormat( 
DEFAULT_SNAPSHOT_TIMESTAMP_FORMAT );
+            utcDateFormatter.setCalendar( new GregorianCalendar() );
+            utcDateFormatter.setTimeZone( DEFAULT_SNAPSHOT_TIME_ZONE );
+
+            snapshot = new Snapshot();
+            snapshot.setBuildNumber( getBuildNumber( recessive ) + 1 );
+            snapshot.setTimestamp( utcDateFormatter.format( new Date() ) );
+
+            Versioning versioning = new Versioning();
+            versioning.setSnapshot( snapshot );
+            versioning.setLastUpdated( snapshot.getTimestamp().replace( ".", 
"" ) );
+            lastUpdated = versioning.getLastUpdated();
+
+            metadata.setVersioning( versioning );
+        }
+        else
+        {
+            snapshot = metadata.getVersioning().getSnapshot();
+            lastUpdated = metadata.getVersioning().getLastUpdated();
+        }
+
+        for ( Artifact artifact : artifacts )
+        {
+            String version = artifact.getVersion();
+
+            if ( version.endsWith( SNAPSHOT ) )
+            {
+                String qualifier = snapshot.getTimestamp() + '-' + 
snapshot.getBuildNumber();
+                version = version.substring( 0, version.length() - 
SNAPSHOT.length() ) + qualifier;
+            }
+
+            SnapshotVersion sv = new SnapshotVersion();
+            sv.setClassifier( artifact.getClassifier() );
+            sv.setExtension( artifact.getExtension() );
+            sv.setVersion( version );
+            sv.setUpdated( lastUpdated );
+
+            versions.put( getKey( sv.getClassifier(), sv.getExtension() ), sv 
);
+        }
+
+        artifacts.clear();
+
+        Versioning versioning = recessive.getVersioning();
+        if ( versioning != null )
+        {
+            for ( SnapshotVersion sv : versioning.getSnapshotVersions() )
+            {
+                String key = getKey( sv.getClassifier(), sv.getExtension() );
+                if ( !versions.containsKey( key ) )
+                {
+                    versions.put( key, sv );
+                }
+            }
+        }
+
+        if ( !legacyFormat )
+        {
+            metadata.getVersioning().setSnapshotVersions( new ArrayList<>( 
versions.values() ) );
+        }
+    }
+
+    private static int getBuildNumber( Metadata metadata )
+    {
+        int number = 0;
+
+        Versioning versioning = metadata.getVersioning();
+        if ( versioning != null )
+        {
+            Snapshot snapshot = versioning.getSnapshot();
+            if ( snapshot != null && snapshot.getBuildNumber() > 0 )
+            {
+                number = snapshot.getBuildNumber();
+            }
+        }
+
+        return number;
+    }
+
+}

http://git-wip-us.apache.org/repos/asf/maven/blob/8972072e/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/RemoteSnapshotMetadataGenerator.java
----------------------------------------------------------------------
diff --git 
a/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/RemoteSnapshotMetadataGenerator.java
 
b/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/RemoteSnapshotMetadataGenerator.java
new file mode 100644
index 0000000..8258966
--- /dev/null
+++ 
b/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/RemoteSnapshotMetadataGenerator.java
@@ -0,0 +1,107 @@
+package org.apache.maven.repository.internal;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+import org.eclipse.aether.RepositorySystemSession;
+import org.eclipse.aether.artifact.Artifact;
+import org.eclipse.aether.deployment.DeployRequest;
+import org.eclipse.aether.impl.MetadataGenerator;
+import org.eclipse.aether.metadata.Metadata;
+import org.eclipse.aether.util.ConfigUtils;
+
+/**
+ * @author Benjamin Bentmann
+ */
+class RemoteSnapshotMetadataGenerator
+    implements MetadataGenerator
+{
+
+    private final Map<Object, RemoteSnapshotMetadata> snapshots;
+
+    private final boolean legacyFormat;
+
+    public RemoteSnapshotMetadataGenerator( RepositorySystemSession session, 
DeployRequest request )
+    {
+        legacyFormat = ConfigUtils.getBoolean( session.getConfigProperties(), 
false, "maven.metadata.legacy" );
+
+        snapshots = new LinkedHashMap<>();
+
+        /*
+         * NOTE: This should be considered a quirk to support interop with 
Maven's legacy ArtifactDeployer which
+         * processes one artifact at a time and hence cannot associate the 
artifacts from the same project to use the
+         * same timestamp+buildno for the snapshot versions. Allowing the 
caller to pass in metadata from a previous
+         * deployment allows to re-establish the association between the 
artifacts of the same project.
+         */
+        for ( Metadata metadata : request.getMetadata() )
+        {
+            if ( metadata instanceof RemoteSnapshotMetadata )
+            {
+                RemoteSnapshotMetadata snapshotMetadata = 
(RemoteSnapshotMetadata) metadata;
+                snapshots.put( snapshotMetadata.getKey(), snapshotMetadata );
+            }
+        }
+    }
+
+    public Collection<? extends Metadata> prepare( Collection<? extends 
Artifact> artifacts )
+    {
+        for ( Artifact artifact : artifacts )
+        {
+            if ( artifact.isSnapshot() )
+            {
+                Object key = RemoteSnapshotMetadata.getKey( artifact );
+                RemoteSnapshotMetadata snapshotMetadata = snapshots.get( key );
+                if ( snapshotMetadata == null )
+                {
+                    snapshotMetadata = new RemoteSnapshotMetadata( artifact, 
legacyFormat );
+                    snapshots.put( key, snapshotMetadata );
+                }
+                snapshotMetadata.bind( artifact );
+            }
+        }
+
+        return snapshots.values();
+    }
+
+    public Artifact transformArtifact( Artifact artifact )
+    {
+        if ( artifact.isSnapshot() && artifact.getVersion().equals( 
artifact.getBaseVersion() ) )
+        {
+            Object key = RemoteSnapshotMetadata.getKey( artifact );
+            RemoteSnapshotMetadata snapshotMetadata = snapshots.get( key );
+            if ( snapshotMetadata != null )
+            {
+                artifact = artifact.setVersion( 
snapshotMetadata.getExpandedVersion( artifact ) );
+            }
+        }
+
+        return artifact;
+    }
+
+    public Collection<? extends Metadata> finish( Collection<? extends 
Artifact> artifacts )
+    {
+        return Collections.emptyList();
+    }
+
+}

http://git-wip-us.apache.org/repos/asf/maven/blob/8972072e/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/SnapshotMetadataGeneratorFactory.java
----------------------------------------------------------------------
diff --git 
a/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/SnapshotMetadataGeneratorFactory.java
 
b/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/SnapshotMetadataGeneratorFactory.java
new file mode 100644
index 0000000..79ffaad
--- /dev/null
+++ 
b/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/SnapshotMetadataGeneratorFactory.java
@@ -0,0 +1,52 @@
+package org.apache.maven.repository.internal;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import org.codehaus.plexus.component.annotations.Component;
+import org.eclipse.aether.RepositorySystemSession;
+import org.eclipse.aether.deployment.DeployRequest;
+import org.eclipse.aether.impl.MetadataGenerator;
+import org.eclipse.aether.impl.MetadataGeneratorFactory;
+import org.eclipse.aether.installation.InstallRequest;
+
+/**
+ * @author Benjamin Bentmann
+ */
+@Component( role = MetadataGeneratorFactory.class, hint = "snapshot" )
+public class SnapshotMetadataGeneratorFactory
+    implements MetadataGeneratorFactory
+{
+
+    public MetadataGenerator newInstance( RepositorySystemSession session, 
InstallRequest request )
+    {
+        return new LocalSnapshotMetadataGenerator( session, request );
+    }
+
+    public MetadataGenerator newInstance( RepositorySystemSession session, 
DeployRequest request )
+    {
+        return new RemoteSnapshotMetadataGenerator( session, request );
+    }
+
+    public float getPriority()
+    {
+        return 10;
+    }
+
+}

http://git-wip-us.apache.org/repos/asf/maven/blob/8972072e/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/VersionsMetadata.java
----------------------------------------------------------------------
diff --git 
a/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/VersionsMetadata.java
 
b/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/VersionsMetadata.java
new file mode 100644
index 0000000..f5e13be
--- /dev/null
+++ 
b/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/VersionsMetadata.java
@@ -0,0 +1,133 @@
+package org.apache.maven.repository.internal;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.LinkedHashSet;
+
+import org.apache.maven.artifact.repository.metadata.Metadata;
+import org.apache.maven.artifact.repository.metadata.Versioning;
+import org.eclipse.aether.artifact.Artifact;
+import org.eclipse.aether.artifact.ArtifactProperties;
+
+/**
+ * @author Benjamin Bentmann
+ */
+final class VersionsMetadata
+    extends MavenMetadata
+{
+
+    private final Artifact artifact;
+
+    public VersionsMetadata( Artifact artifact )
+    {
+        super( createRepositoryMetadata( artifact ), null );
+        this.artifact = artifact;
+    }
+
+    public VersionsMetadata( Artifact artifact, File file )
+    {
+        super( createRepositoryMetadata( artifact ), file );
+        this.artifact = artifact;
+    }
+
+    private static Metadata createRepositoryMetadata( Artifact artifact )
+    {
+        Metadata metadata = new Metadata();
+        metadata.setGroupId( artifact.getGroupId() );
+        metadata.setArtifactId( artifact.getArtifactId() );
+
+        Versioning versioning = new Versioning();
+        versioning.addVersion( artifact.getBaseVersion() );
+        if ( !artifact.isSnapshot() )
+        {
+            versioning.setRelease( artifact.getBaseVersion() );
+        }
+        if ( "maven-plugin".equals( artifact.getProperty( 
ArtifactProperties.TYPE, "" ) ) )
+        {
+            versioning.setLatest( artifact.getBaseVersion() );
+        }
+
+        metadata.setVersioning( versioning );
+
+        return metadata;
+    }
+
+    @Override
+    protected void merge( Metadata recessive )
+    {
+        Versioning versioning = metadata.getVersioning();
+        versioning.updateTimestamp();
+
+        if ( recessive.getVersioning() != null )
+        {
+            if ( versioning.getLatest() == null )
+            {
+                versioning.setLatest( recessive.getVersioning().getLatest() );
+            }
+            if ( versioning.getRelease() == null )
+            {
+                versioning.setRelease( recessive.getVersioning().getRelease() 
);
+            }
+
+            Collection<String> versions = new LinkedHashSet<>( 
recessive.getVersioning().getVersions() );
+            versions.addAll( versioning.getVersions() );
+            versioning.setVersions( new ArrayList<>( versions ) );
+        }
+    }
+
+    public Object getKey()
+    {
+        return getGroupId() + ':' + getArtifactId();
+    }
+
+    public static Object getKey( Artifact artifact )
+    {
+        return artifact.getGroupId() + ':' + artifact.getArtifactId();
+    }
+
+    public MavenMetadata setFile( File file )
+    {
+        return new VersionsMetadata( artifact, file );
+    }
+
+    public String getGroupId()
+    {
+        return artifact.getGroupId();
+    }
+
+    public String getArtifactId()
+    {
+        return artifact.getArtifactId();
+    }
+
+    public String getVersion()
+    {
+        return "";
+    }
+
+    public Nature getNature()
+    {
+        return artifact.isSnapshot() ? Nature.RELEASE_OR_SNAPSHOT : 
Nature.RELEASE;
+    }
+
+}

http://git-wip-us.apache.org/repos/asf/maven/blob/8972072e/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/VersionsMetadataGenerator.java
----------------------------------------------------------------------
diff --git 
a/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/VersionsMetadataGenerator.java
 
b/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/VersionsMetadataGenerator.java
new file mode 100644
index 0000000..5173001
--- /dev/null
+++ 
b/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/VersionsMetadataGenerator.java
@@ -0,0 +1,108 @@
+package org.apache.maven.repository.internal;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Iterator;
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+import org.eclipse.aether.RepositorySystemSession;
+import org.eclipse.aether.artifact.Artifact;
+import org.eclipse.aether.deployment.DeployRequest;
+import org.eclipse.aether.impl.MetadataGenerator;
+import org.eclipse.aether.installation.InstallRequest;
+import org.eclipse.aether.metadata.Metadata;
+
+/**
+ * @author Benjamin Bentmann
+ */
+class VersionsMetadataGenerator
+    implements MetadataGenerator
+{
+
+    private Map<Object, VersionsMetadata> versions;
+
+    private Map<Object, VersionsMetadata> processedVersions;
+
+    public VersionsMetadataGenerator( RepositorySystemSession session, 
InstallRequest request )
+    {
+        this( session, request.getMetadata() );
+    }
+
+    public VersionsMetadataGenerator( RepositorySystemSession session, 
DeployRequest request )
+    {
+        this( session, request.getMetadata() );
+    }
+
+    private VersionsMetadataGenerator( RepositorySystemSession session, 
Collection<? extends Metadata> metadatas )
+    {
+        versions = new LinkedHashMap<>();
+        processedVersions = new LinkedHashMap<>();
+
+        /*
+         * NOTE: This should be considered a quirk to support interop with 
Maven's legacy ArtifactDeployer which
+         * processes one artifact at a time and hence cannot associate the 
artifacts from the same project to use the
+         * same version index. Allowing the caller to pass in metadata from a 
previous deployment allows to re-establish
+         * the association between the artifacts of the same project.
+         */
+        for ( Iterator<? extends Metadata> it = metadatas.iterator(); 
it.hasNext(); )
+        {
+            Metadata metadata = it.next();
+            if ( metadata instanceof VersionsMetadata )
+            {
+                it.remove();
+                VersionsMetadata versionsMetadata = (VersionsMetadata) 
metadata;
+                processedVersions.put( versionsMetadata.getKey(), 
versionsMetadata );
+            }
+        }
+    }
+
+    public Collection<? extends Metadata> prepare( Collection<? extends 
Artifact> artifacts )
+    {
+        return Collections.emptyList();
+    }
+
+    public Artifact transformArtifact( Artifact artifact )
+    {
+        return artifact;
+    }
+
+    public Collection<? extends Metadata> finish( Collection<? extends 
Artifact> artifacts )
+    {
+        for ( Artifact artifact : artifacts )
+        {
+            Object key = VersionsMetadata.getKey( artifact );
+            if ( processedVersions.get( key ) == null )
+            {
+                VersionsMetadata versionsMetadata = versions.get( key );
+                if ( versionsMetadata == null )
+                {
+                    versionsMetadata = new VersionsMetadata( artifact );
+                    versions.put( key, versionsMetadata );
+                }
+            }
+        }
+
+        return versions.values();
+    }
+
+}

http://git-wip-us.apache.org/repos/asf/maven/blob/8972072e/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/VersionsMetadataGeneratorFactory.java
----------------------------------------------------------------------
diff --git 
a/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/VersionsMetadataGeneratorFactory.java
 
b/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/VersionsMetadataGeneratorFactory.java
new file mode 100644
index 0000000..47ef360
--- /dev/null
+++ 
b/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/VersionsMetadataGeneratorFactory.java
@@ -0,0 +1,52 @@
+package org.apache.maven.repository.internal;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import org.codehaus.plexus.component.annotations.Component;
+import org.eclipse.aether.RepositorySystemSession;
+import org.eclipse.aether.deployment.DeployRequest;
+import org.eclipse.aether.impl.MetadataGenerator;
+import org.eclipse.aether.impl.MetadataGeneratorFactory;
+import org.eclipse.aether.installation.InstallRequest;
+
+/**
+ * @author Benjamin Bentmann
+ */
+@Component( role = MetadataGeneratorFactory.class, hint = "versions" )
+public class VersionsMetadataGeneratorFactory
+    implements MetadataGeneratorFactory
+{
+
+    public MetadataGenerator newInstance( RepositorySystemSession session, 
InstallRequest request )
+    {
+        return new VersionsMetadataGenerator( session, request );
+    }
+
+    public MetadataGenerator newInstance( RepositorySystemSession session, 
DeployRequest request )
+    {
+        return new VersionsMetadataGenerator( session, request );
+    }
+
+    public float getPriority()
+    {
+        return 5;
+    }
+
+}

http://git-wip-us.apache.org/repos/asf/maven/blob/8972072e/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/package-info.java
----------------------------------------------------------------------
diff --git 
a/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/package-info.java
 
b/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/package-info.java
new file mode 100644
index 0000000..7309c2b
--- /dev/null
+++ 
b/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/package-info.java
@@ -0,0 +1,25 @@
+// CHECKSTYLE_OFF: RegexpHeader
+/**
+ * <a href="https://maven.apache.org/resolver/";>Maven Resolver</a> extensions 
for utilizing the Maven POM and Maven
+ * repository metadata.
+ */
+package org.apache.maven.repository.internal;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */

http://git-wip-us.apache.org/repos/asf/maven/blob/8972072e/maven-resolver-provider/src/site/apt/index.apt
----------------------------------------------------------------------
diff --git a/maven-resolver-provider/src/site/apt/index.apt 
b/maven-resolver-provider/src/site/apt/index.apt
new file mode 100644
index 0000000..b50ea1d
--- /dev/null
+++ b/maven-resolver-provider/src/site/apt/index.apt
@@ -0,0 +1,33 @@
+~~ Licensed to the Apache Software Foundation (ASF) under one
+~~ or more contributor license agreements.  See the NOTICE file
+~~ distributed with this work for additional information
+~~ regarding copyright ownership.  The ASF licenses this file
+~~ to you under the Apache License, Version 2.0 (the
+~~ "License"); you may not use this file except in compliance
+~~ with the License.  You may obtain a copy of the License at
+~~
+~~ http://www.apache.org/licenses/LICENSE-2.0
+~~
+~~ Unless required by applicable law or agreed to in writing,
+~~ software distributed under the License is distributed on an
+~~ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+~~ KIND, either express or implied.  See the License for the
+~~ specific language governing permissions and limitations
+~~ under the License.
+
+ -----
+ Introduction
+ -----
+ Hervé Boutemy
+ -----
+ 2012-09-29
+ -----
+
+Maven Artifact Resolver Provider
+
+ Maven Artifact Resolver Provider is a {{{/resolver/}Maven Artifact Resolver}} 
extension to support
+ Maven POMs and local+remote repositories.
+
+ Main component is <<<MavenRepositorySystemUtils>>>
+ 
({{{./apidocs/org/apache/maven/repository/internal/MavenRepositorySystemUtils.html}javadoc}},
+ 
{{{./xref/org/apache/maven/repository/internal/MavenRepositorySystemUtils.html}source}}).

http://git-wip-us.apache.org/repos/asf/maven/blob/8972072e/maven-resolver-provider/src/site/site.xml
----------------------------------------------------------------------
diff --git a/maven-resolver-provider/src/site/site.xml 
b/maven-resolver-provider/src/site/site.xml
new file mode 100644
index 0000000..3a16bf9
--- /dev/null
+++ b/maven-resolver-provider/src/site/site.xml
@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<!--
+Licensed to the Apache Software Foundation (ASF) under one
+or more contributor license agreements.  See the NOTICE file
+distributed with this work for additional information
+regarding copyright ownership.  The ASF licenses this file
+to you under the Apache License, Version 2.0 (the
+"License"); you may not use this file except in compliance
+with the License.  You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing,
+software distributed under the License is distributed on an
+"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+KIND, either express or implied.  See the License for the
+specific language governing permissions and limitations
+under the License.
+-->
+
+<project xmlns="http://maven.apache.org/DECORATION/1.0.0";
+  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
+  xsi:schemaLocation="http://maven.apache.org/DECORATION/1.0.0 
http://maven.apache.org/xsd/decoration-1.0.0.xsd";>
+  <body>
+    <menu name="Overview">
+      <item name="Introduction" href="index.html"/>
+      <item name="JavaDocs" href="apidocs/index.html"/>
+      <item name="Source Xref" href="xref/index.html"/>
+      <!--item name="FAQ" href="faq.html"/-->
+    </menu>
+
+    <menu ref="parent"/>
+    <menu ref="reports"/>
+  </body>
+</project>
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/maven/blob/8972072e/maven-resolver-provider/src/test/java/org/apache/maven/repository/internal/AbstractRepositoryTestCase.java
----------------------------------------------------------------------
diff --git 
a/maven-resolver-provider/src/test/java/org/apache/maven/repository/internal/AbstractRepositoryTestCase.java
 
b/maven-resolver-provider/src/test/java/org/apache/maven/repository/internal/AbstractRepositoryTestCase.java
new file mode 100644
index 0000000..b81450c
--- /dev/null
+++ 
b/maven-resolver-provider/src/test/java/org/apache/maven/repository/internal/AbstractRepositoryTestCase.java
@@ -0,0 +1,87 @@
+package org.apache.maven.repository.internal;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import java.net.MalformedURLException;
+
+import org.apache.maven.repository.internal.util.ConsoleRepositoryListener;
+import org.apache.maven.repository.internal.util.ConsoleTransferListener;
+import org.codehaus.plexus.ContainerConfiguration;
+import org.codehaus.plexus.PlexusConstants;
+import org.codehaus.plexus.PlexusTestCase;
+import org.eclipse.aether.DefaultRepositorySystemSession;
+import org.eclipse.aether.RepositorySystem;
+import org.eclipse.aether.RepositorySystemSession;
+import org.eclipse.aether.repository.LocalRepository;
+import org.eclipse.aether.repository.RemoteRepository;
+
+public abstract class AbstractRepositoryTestCase
+    extends PlexusTestCase
+{
+    protected RepositorySystem system;
+
+    protected RepositorySystemSession session;
+
+    @Override
+    protected void customizeContainerConfiguration( ContainerConfiguration 
containerConfiguration )
+    {
+        super.customizeContainerConfiguration( containerConfiguration );
+        containerConfiguration.setAutoWiring( true );
+        containerConfiguration.setClassPathScanning( 
PlexusConstants.SCANNING_INDEX );
+    }
+
+    @Override
+    protected void setUp()
+        throws Exception
+    {
+        super.setUp();
+        system = lookup( RepositorySystem.class );
+        session = newMavenRepositorySystemSession( system );
+    }
+
+    @Override
+    protected void tearDown()
+        throws Exception
+    {
+        session = null;
+        system = null;
+        super.tearDown();
+    }
+
+    public static RepositorySystemSession newMavenRepositorySystemSession( 
RepositorySystem system )
+    {
+        DefaultRepositorySystemSession session = 
MavenRepositorySystemUtils.newSession();
+
+        LocalRepository localRepo = new LocalRepository( "target/local-repo" );
+        session.setLocalRepositoryManager( system.newLocalRepositoryManager( 
session, localRepo ) );
+
+        session.setTransferListener( new ConsoleTransferListener() );
+        session.setRepositoryListener( new ConsoleRepositoryListener() );
+
+        return session;
+    }
+
+    public static RemoteRepository newTestRepository()
+        throws MalformedURLException
+    {
+        return new RemoteRepository.Builder( "repo", "default",
+                                             getTestFile( 
"target/test-classes/repo" ).toURI().toURL().toString() ).build();
+    }
+}

http://git-wip-us.apache.org/repos/asf/maven/blob/8972072e/maven-resolver-provider/src/test/java/org/apache/maven/repository/internal/DefaultArtifactDescriptorReaderTest.java
----------------------------------------------------------------------
diff --git 
a/maven-resolver-provider/src/test/java/org/apache/maven/repository/internal/DefaultArtifactDescriptorReaderTest.java
 
b/maven-resolver-provider/src/test/java/org/apache/maven/repository/internal/DefaultArtifactDescriptorReaderTest.java
new file mode 100644
index 0000000..e873138
--- /dev/null
+++ 
b/maven-resolver-provider/src/test/java/org/apache/maven/repository/internal/DefaultArtifactDescriptorReaderTest.java
@@ -0,0 +1,77 @@
+package org.apache.maven.repository.internal;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+
+import org.eclipse.aether.RepositoryEvent;
+import org.eclipse.aether.RepositoryEvent.EventType;
+import org.eclipse.aether.artifact.DefaultArtifact;
+import org.eclipse.aether.impl.ArtifactDescriptorReader;
+import org.eclipse.aether.impl.RepositoryEventDispatcher;
+import org.eclipse.aether.resolution.ArtifactDescriptorRequest;
+import org.mockito.ArgumentCaptor;
+
+public class DefaultArtifactDescriptorReaderTest
+    extends AbstractRepositoryTestCase
+{
+
+    public void testMng5459()
+        throws Exception
+    {
+        // prepare
+        DefaultArtifactDescriptorReader reader = 
(DefaultArtifactDescriptorReader) lookup( ArtifactDescriptorReader.class );
+
+        RepositoryEventDispatcher eventDispatcher = mock( 
RepositoryEventDispatcher.class );
+
+        ArgumentCaptor<RepositoryEvent> event = ArgumentCaptor.forClass( 
RepositoryEvent.class );
+
+        reader.setRepositoryEventDispatcher( eventDispatcher );
+
+        ArtifactDescriptorRequest request = new ArtifactDescriptorRequest();
+
+        request.addRepository( newTestRepository() );
+
+        request.setArtifact( new DefaultArtifact( "org.apache.maven.its", 
"dep-mng5459", "jar", "0.4.0-SNAPSHOT" ) );
+
+        // execute
+        reader.readArtifactDescriptor( session, request );
+
+        // verify
+        verify( eventDispatcher ).dispatch( event.capture() );
+
+        boolean missingArtifactDescriptor = false;
+
+        for( RepositoryEvent evt : event.getAllValues() )
+        {
+            if ( EventType.ARTIFACT_DESCRIPTOR_MISSING.equals( evt.getType() ) 
)
+            {
+                assertEquals( "Could not find artifact 
org.apache.maven.its:dep-mng5459:pom:0.4.0-20130404.090532-2 in repo (" + 
newTestRepository().getUrl() + ")", evt.getException().getMessage() );
+                missingArtifactDescriptor = true;
+            }
+        }
+
+        if( !missingArtifactDescriptor )
+        {
+            fail( "Expected missing artifact descriptor for 
org.apache.maven.its:dep-mng5459:pom:0.4.0-20130404.090532-2" );
+        }
+    }
+}

http://git-wip-us.apache.org/repos/asf/maven/blob/8972072e/maven-resolver-provider/src/test/java/org/apache/maven/repository/internal/DefaultVersionResolverTest.java
----------------------------------------------------------------------
diff --git 
a/maven-resolver-provider/src/test/java/org/apache/maven/repository/internal/DefaultVersionResolverTest.java
 
b/maven-resolver-provider/src/test/java/org/apache/maven/repository/internal/DefaultVersionResolverTest.java
new file mode 100644
index 0000000..90dd6a4
--- /dev/null
+++ 
b/maven-resolver-provider/src/test/java/org/apache/maven/repository/internal/DefaultVersionResolverTest.java
@@ -0,0 +1,96 @@
+package org.apache.maven.repository.internal;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import org.eclipse.aether.artifact.Artifact;
+import org.eclipse.aether.impl.VersionResolver;
+import org.eclipse.aether.resolution.VersionRequest;
+import org.eclipse.aether.resolution.VersionResult;
+import org.eclipse.aether.artifact.DefaultArtifact;
+
+public class DefaultVersionResolverTest
+    extends AbstractRepositoryTestCase
+{
+    private DefaultVersionResolver versionResolver;
+
+    @Override
+    protected void setUp()
+        throws Exception
+    {
+        super.setUp();
+        // be sure we're testing the right class, i.e. 
DefaultVersionResolver.class
+        versionResolver = (DefaultVersionResolver) lookup( 
VersionResolver.class, "default" );
+    }
+
+    @Override
+    protected void tearDown()
+        throws Exception
+    {
+        versionResolver = null;
+        super.tearDown();
+    }
+
+    public void 
testResolveSeparateInstalledClassifiedNonUniqueVersionedArtifacts()
+        throws Exception
+    {
+        VersionRequest requestB = new VersionRequest();
+        requestB.addRepository( newTestRepository() );
+        Artifact artifactB =
+            new DefaultArtifact( "org.apache.maven.its", "dep-mng5324", 
"classifierB", "jar", "07.20.3-SNAPSHOT" );
+        requestB.setArtifact( artifactB );
+
+        VersionResult resultB = versionResolver.resolveVersion( session, 
requestB );
+        assertEquals( "07.20.3-20120809.112920-97", resultB.getVersion() );
+
+        VersionRequest requestA = new VersionRequest();
+        requestA.addRepository( newTestRepository() );
+
+        Artifact artifactA =
+            new DefaultArtifact( "org.apache.maven.its", "dep-mng5324", 
"classifierA", "jar", "07.20.3-SNAPSHOT" );
+        requestA.setArtifact( artifactA );
+
+        VersionResult resultA = versionResolver.resolveVersion( session, 
requestA );
+        assertEquals( "07.20.3-20120809.112124-88", resultA.getVersion() );
+    }
+
+    public void testResolveSeparateInstalledClassifiedNonVersionedArtifacts()
+        throws Exception
+    {
+        VersionRequest requestA = new VersionRequest();
+        requestA.addRepository( newTestRepository() );
+        String versionA = "07.20.3-20120809.112124-88";
+        Artifact artifactA =
+            new DefaultArtifact( "org.apache.maven.its", "dep-mng5324", 
"classifierA", "jar", versionA );
+        requestA.setArtifact( artifactA );
+
+        VersionResult resultA = versionResolver.resolveVersion( session, 
requestA );
+        assertEquals( versionA, resultA.getVersion() );
+
+        VersionRequest requestB = new VersionRequest();
+        requestB.addRepository( newTestRepository() );
+        String versionB = "07.20.3-20120809.112920-97";
+        Artifact artifactB =
+            new DefaultArtifact( "org.apache.maven.its", "dep-mng5324", 
"classifierB", "jar", versionB );
+        requestB.setArtifact( artifactB );
+
+        VersionResult resultB = versionResolver.resolveVersion( session, 
requestB );
+        assertEquals( versionB, resultB.getVersion() );
+    }
+}

http://git-wip-us.apache.org/repos/asf/maven/blob/8972072e/maven-resolver-provider/src/test/java/org/apache/maven/repository/internal/MavenRepositorySystemUtilsTest.java
----------------------------------------------------------------------
diff --git 
a/maven-resolver-provider/src/test/java/org/apache/maven/repository/internal/MavenRepositorySystemUtilsTest.java
 
b/maven-resolver-provider/src/test/java/org/apache/maven/repository/internal/MavenRepositorySystemUtilsTest.java
new file mode 100644
index 0000000..768835a
--- /dev/null
+++ 
b/maven-resolver-provider/src/test/java/org/apache/maven/repository/internal/MavenRepositorySystemUtilsTest.java
@@ -0,0 +1,45 @@
+package org.apache.maven.repository.internal;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import org.eclipse.aether.RepositorySystem;
+import org.eclipse.aether.impl.MetadataGeneratorFactory;
+import org.eclipse.aether.spi.locator.ServiceLocator;
+
+import junit.framework.TestCase;
+
+public class MavenRepositorySystemUtilsTest
+    extends TestCase
+{
+
+    public void testGetRepositorySystem()
+    {
+        ServiceLocator locator = 
MavenRepositorySystemUtils.newServiceLocator();
+        RepositorySystem repoSys = locator.getService( RepositorySystem.class 
);
+        assertNotNull( repoSys );
+    }
+
+    public void testGetMetadataGeneratorFactories()
+    {
+        ServiceLocator locator = 
MavenRepositorySystemUtils.newServiceLocator();
+        assertEquals( 2, locator.getServices( MetadataGeneratorFactory.class 
).size() );
+    }
+
+}

http://git-wip-us.apache.org/repos/asf/maven/blob/8972072e/maven-resolver-provider/src/test/java/org/apache/maven/repository/internal/RemoteSnapshotMetadataTest.java
----------------------------------------------------------------------
diff --git 
a/maven-resolver-provider/src/test/java/org/apache/maven/repository/internal/RemoteSnapshotMetadataTest.java
 
b/maven-resolver-provider/src/test/java/org/apache/maven/repository/internal/RemoteSnapshotMetadataTest.java
new file mode 100644
index 0000000..278231f
--- /dev/null
+++ 
b/maven-resolver-provider/src/test/java/org/apache/maven/repository/internal/RemoteSnapshotMetadataTest.java
@@ -0,0 +1,82 @@
+package org.apache.maven.repository.internal;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import static org.junit.Assert.assertTrue;
+
+import java.text.SimpleDateFormat;
+import java.util.Arrays;
+import java.util.Date;
+import java.util.GregorianCalendar;
+import java.util.HashSet;
+import java.util.Locale;
+import java.util.Set;
+
+import org.apache.maven.artifact.repository.metadata.Metadata;
+import org.eclipse.aether.artifact.DefaultArtifact;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+public class RemoteSnapshotMetadataTest
+{
+    private Locale defaultLocale;
+
+    @Before
+    public void setLocaleToUseBuddhistCalendar()
+    {
+        defaultLocale = Locale.getDefault();
+        Locale.setDefault( new Locale( "th", "TH" ) );
+    }
+
+    @After
+    public void restoreLocale()
+    {
+        Locale.setDefault( defaultLocale );
+    }
+
+    static String gregorianDate()
+    {
+        SimpleDateFormat df = new SimpleDateFormat( "yyyyMMdd" );
+        df.setCalendar( new GregorianCalendar() );
+        df.setTimeZone( RemoteSnapshotMetadata.DEFAULT_SNAPSHOT_TIME_ZONE );
+        return df.format( new Date() );
+    }
+
+    @Test
+    public void gregorianCalendarIsUsed()
+    {
+        String dateBefore = gregorianDate();
+
+        RemoteSnapshotMetadata metadata = new RemoteSnapshotMetadata(
+                new DefaultArtifact( "a:b:1-SNAPSHOT" ), false);
+        metadata.merge( new Metadata() );
+
+        String dateAfter = gregorianDate();
+
+        String ts = 
metadata.metadata.getVersioning().getSnapshot().getTimestamp();
+        String datePart = ts.replaceAll( "\\..*", "" );
+
+        /* Allow for this test running across midnight */
+        Set<String> expected = new HashSet<String>( Arrays.asList( dateBefore, 
dateAfter ) );
+        assertTrue( "Expected " + datePart + " to be in " + expected,
+                expected.contains( datePart ) );
+    }
+}

http://git-wip-us.apache.org/repos/asf/maven/blob/8972072e/maven-resolver-provider/src/test/java/org/apache/maven/repository/internal/RepositorySystemTest.java
----------------------------------------------------------------------
diff --git 
a/maven-resolver-provider/src/test/java/org/apache/maven/repository/internal/RepositorySystemTest.java
 
b/maven-resolver-provider/src/test/java/org/apache/maven/repository/internal/RepositorySystemTest.java
new file mode 100644
index 0000000..db77a44
--- /dev/null
+++ 
b/maven-resolver-provider/src/test/java/org/apache/maven/repository/internal/RepositorySystemTest.java
@@ -0,0 +1,220 @@
+package org.apache.maven.repository.internal;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import java.util.Arrays;
+import java.util.List;
+
+import org.eclipse.aether.artifact.Artifact;
+import org.eclipse.aether.collection.CollectRequest;
+import org.eclipse.aether.collection.CollectResult;
+import org.eclipse.aether.graph.Dependency;
+import org.eclipse.aether.graph.DependencyNode;
+import org.eclipse.aether.resolution.ArtifactDescriptorRequest;
+import org.eclipse.aether.resolution.ArtifactDescriptorResult;
+import org.eclipse.aether.resolution.ArtifactRequest;
+import org.eclipse.aether.resolution.ArtifactResult;
+import org.eclipse.aether.artifact.DefaultArtifact;
+
+public class RepositorySystemTest
+    extends AbstractRepositoryTestCase
+{
+    public void testResolveVersionRange()
+        throws Exception
+    {
+        //VersionRangeResult resolveVersionRange( RepositorySystemSession 
session, VersionRangeRequest request )
+        //                throws VersionRangeResolutionException;
+
+    }
+
+    public void testResolveVersion()
+        throws Exception
+    {
+        //VersionResult resolveVersion( RepositorySystemSession session, 
VersionRequest request )
+        //                throws VersionResolutionException;
+    }
+
+    public void testReadArtifactDescriptor()
+        throws Exception
+    {
+        Artifact artifact = new DefaultArtifact( 
"ut.simple:artifact:extension:classifier:1.0" );
+
+        ArtifactDescriptorRequest request = new ArtifactDescriptorRequest();
+        request.setArtifact( artifact );
+        request.addRepository( newTestRepository() );
+
+        ArtifactDescriptorResult result = system.readArtifactDescriptor( 
session, request );
+
+        List<Dependency> deps = result.getDependencies();
+        assertEquals( 2, deps.size() );
+        checkUtSimpleArtifactDependencies( deps.get( 0 ), deps.get( 1 ) );
+    }
+
+    /**
+     * check ut.simple:artifact:1.0 dependencies
+     */
+    private void checkUtSimpleArtifactDependencies( Dependency dep1, 
Dependency dep2 )
+    {
+        assertEquals( "compile", dep1.getScope() );
+        assertFalse( dep1.isOptional() );
+        assertEquals( 0, dep1.getExclusions().size() );
+        Artifact depArtifact = dep1.getArtifact();
+        assertEquals( "ut.simple", depArtifact.getGroupId() );
+        assertEquals( "dependency", depArtifact.getArtifactId() );
+        assertEquals( "1.0", depArtifact.getVersion() );
+        assertEquals( "1.0", depArtifact.getBaseVersion() );
+        assertNull( depArtifact.getFile() );
+        assertFalse( depArtifact.isSnapshot() );
+        assertEquals( "", depArtifact.getClassifier() );
+        assertEquals( "jar", depArtifact.getExtension() );
+        assertEquals( "java", depArtifact.getProperty( "language", null ) );
+        assertEquals( "jar", depArtifact.getProperty( "type", null ) );
+        assertEquals( "true", depArtifact.getProperty( "constitutesBuildPath", 
null ) );
+        assertEquals( "false", depArtifact.getProperty( 
"includesDependencies", null ) );
+        assertEquals( 4, depArtifact.getProperties().size() );
+
+        assertEquals( "compile", dep2.getScope() );
+        assertFalse( dep2.isOptional() );
+        assertEquals( 0, dep2.getExclusions().size() );
+        depArtifact = dep2.getArtifact();
+        assertEquals( "ut.simple", depArtifact.getGroupId() );
+        assertEquals( "dependency", depArtifact.getArtifactId() );
+        assertEquals( "1.0", depArtifact.getVersion() );
+        assertEquals( "1.0", depArtifact.getBaseVersion() );
+        assertNull( depArtifact.getFile() );
+        assertFalse( depArtifact.isSnapshot() );
+        assertEquals( "sources", depArtifact.getClassifier() );
+        assertEquals( "jar", depArtifact.getExtension() );
+        assertEquals( "java", depArtifact.getProperty( "language", null ) );
+        assertEquals( "jar", depArtifact.getProperty( "type", null ) ); // 
shouldn't it be java-sources given the classifier?
+        assertEquals( "true", depArtifact.getProperty( "constitutesBuildPath", 
null ) ); // shouldn't it be false given the classifier?
+        assertEquals( "false", depArtifact.getProperty( 
"includesDependencies", null ) );
+        assertEquals( 4, depArtifact.getProperties().size() );
+    }
+
+    public void testCollectDependencies()
+        throws Exception
+    {
+        Artifact artifact = new DefaultArtifact( 
"ut.simple:artifact:extension:classifier:1.0" );
+        // notice: extension and classifier not really used in this test...
+
+        CollectRequest collectRequest = new CollectRequest();
+        collectRequest.setRoot( new Dependency( artifact, null ) );
+        collectRequest.addRepository( newTestRepository() );
+
+        CollectResult collectResult = system.collectDependencies( session, 
collectRequest );
+
+        List<DependencyNode> nodes = collectResult.getRoot().getChildren();
+        assertEquals( 2, nodes.size() );
+        checkUtSimpleArtifactDependencies( nodes.get( 0 ).getDependency(), 
nodes.get( 1 ).getDependency() );
+    }
+
+    public void testResolveArtifact()
+        throws Exception
+    {
+        Artifact artifact = new DefaultArtifact( "ut.simple:artifact:1.0" );
+
+        ArtifactRequest artifactRequest = new ArtifactRequest();
+        artifactRequest.setArtifact( artifact );
+        artifactRequest.addRepository( newTestRepository() );
+
+        ArtifactResult artifactResult = system.resolveArtifact( session, 
artifactRequest );
+        checkArtifactResult( artifactResult, "artifact-1.0.jar" );
+
+        artifact = new DefaultArtifact( "ut.simple:artifact:zip:1.0" );
+        artifactRequest.setArtifact( artifact );
+        artifactResult = system.resolveArtifact( session, artifactRequest );
+        checkArtifactResult( artifactResult, "artifact-1.0.zip" );
+
+        artifact = new DefaultArtifact( 
"ut.simple:artifact:zip:classifier:1.0" );
+        artifactRequest.setArtifact( artifact );
+        artifactResult = system.resolveArtifact( session, artifactRequest );
+        checkArtifactResult( artifactResult, "artifact-1.0-classifier.zip" );
+    }
+
+    private void checkArtifactResult( ArtifactResult result, String filename )
+    {
+        assertFalse( result.isMissing() );
+        assertTrue( result.isResolved() );
+        Artifact artifact = result.getArtifact();
+        assertNotNull( artifact.getFile() );
+        assertEquals( filename, artifact.getFile().getName() );
+    }
+
+    public void testResolveArtifacts()
+        throws Exception
+    {
+        ArtifactRequest req1 = new ArtifactRequest();
+        req1.setArtifact( new DefaultArtifact( "ut.simple:artifact:1.0" ) );
+        req1.addRepository( newTestRepository() );
+
+        ArtifactRequest req2 = new ArtifactRequest();
+        req2.setArtifact( new DefaultArtifact( "ut.simple:artifact:zip:1.0" ) 
);
+        req2.addRepository( newTestRepository() );
+
+        ArtifactRequest req3 = new ArtifactRequest();
+        req3.setArtifact( new DefaultArtifact( 
"ut.simple:artifact:zip:classifier:1.0" ) );
+        req3.addRepository( newTestRepository() );
+
+        List<ArtifactRequest> requests = Arrays.asList( req1, req2, req3 );
+
+        List<ArtifactResult> results = system.resolveArtifacts( session, 
requests );
+
+        assertEquals( 3, results.size() );
+        checkArtifactResult( results.get( 0 ), "artifact-1.0.jar" );
+        checkArtifactResult( results.get( 1 ), "artifact-1.0.zip" );
+        checkArtifactResult( results.get( 2 ), "artifact-1.0-classifier.zip" );
+    }
+
+    public void testResolveMetadata()
+        throws Exception
+    {
+        //List<MetadataResult> resolveMetadata( RepositorySystemSession 
session,
+        //                                      Collection<? extends 
MetadataRequest> requests );
+    }
+
+    public void testInstall()
+        throws Exception
+    {
+        //InstallResult install( RepositorySystemSession session, 
InstallRequest request )
+        //                throws InstallationException;
+        // release, snapshot unique ou non unique, attachement
+    }
+
+    public void testDeploy()
+        throws Exception
+    {
+        //DeployResult deploy( RepositorySystemSession session, DeployRequest 
request )
+        //                throws DeploymentException;
+    }
+
+    public void testNewLocalRepositoryManager()
+        throws Exception
+    {
+        //LocalRepositoryManager newLocalRepositoryManager( LocalRepository 
localRepository );
+    }
+
+    public void testNewSyncContext()
+        throws Exception
+    {
+        //SyncContext newSyncContext( RepositorySystemSession session, boolean 
shared );
+    }
+
+}

http://git-wip-us.apache.org/repos/asf/maven/blob/8972072e/maven-resolver-provider/src/test/java/org/apache/maven/repository/internal/util/ConsoleRepositoryListener.java
----------------------------------------------------------------------
diff --git 
a/maven-resolver-provider/src/test/java/org/apache/maven/repository/internal/util/ConsoleRepositoryListener.java
 
b/maven-resolver-provider/src/test/java/org/apache/maven/repository/internal/util/ConsoleRepositoryListener.java
new file mode 100644
index 0000000..2879a9f
--- /dev/null
+++ 
b/maven-resolver-provider/src/test/java/org/apache/maven/repository/internal/util/ConsoleRepositoryListener.java
@@ -0,0 +1,132 @@
+package org.apache.maven.repository.internal.util;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import java.io.PrintStream;
+
+import org.eclipse.aether.AbstractRepositoryListener;
+import org.eclipse.aether.RepositoryEvent;
+
+public class ConsoleRepositoryListener
+    extends AbstractRepositoryListener
+{
+
+    private PrintStream out;
+
+    public ConsoleRepositoryListener()
+    {
+        this( null );
+    }
+
+    public ConsoleRepositoryListener( PrintStream out )
+    {
+        this.out = ( out != null ) ? out : System.out;
+    }
+
+    public void artifactDeployed( RepositoryEvent event )
+    {
+        println( "artifactDeployed", event.getArtifact() + " to " + 
event.getRepository() );
+    }
+
+    public void artifactDeploying( RepositoryEvent event )
+    {
+        println( "artifactDeploying", event.getArtifact() + " to " + 
event.getRepository() );
+    }
+
+    public void artifactDescriptorInvalid( RepositoryEvent event )
+    {
+        println( "artifactDescriptorInvalid", "for " + event.getArtifact() + 
": " + event.getException().getMessage() );
+    }
+
+    public void artifactDescriptorMissing( RepositoryEvent event )
+    {
+        println( "artifactDescriptorMissing", "for " + event.getArtifact() );
+    }
+
+    public void artifactInstalled( RepositoryEvent event )
+    {
+        println( "artifactInstalled", event.getArtifact() + " to " + 
event.getFile() );
+    }
+
+    public void artifactInstalling( RepositoryEvent event )
+    {
+        println( "artifactInstalling", event.getArtifact() + " to " + 
event.getFile() );
+    }
+
+    public void artifactResolved( RepositoryEvent event )
+    {
+        println( "artifactResolved", event.getArtifact() + " from " + 
event.getRepository() );
+    }
+
+    public void artifactDownloading( RepositoryEvent event )
+    {
+        println( "artifactDownloading", event.getArtifact() + " from " + 
event.getRepository() );
+    }
+
+    public void artifactDownloaded( RepositoryEvent event )
+    {
+        println( "artifactDownloaded", event.getArtifact() + " from " + 
event.getRepository() );
+    }
+
+    public void artifactResolving( RepositoryEvent event )
+    {
+        println( "artifactResolving", event.getArtifact().toString() );
+    }
+
+    public void metadataDeployed( RepositoryEvent event )
+    {
+        println( "metadataDeployed", event.getMetadata() + " to " + 
event.getRepository() );
+    }
+
+    public void metadataDeploying( RepositoryEvent event )
+    {
+        println( "metadataDeploying", event.getMetadata() + " to " + 
event.getRepository() );
+    }
+
+    public void metadataInstalled( RepositoryEvent event )
+    {
+        println( "metadataInstalled", event.getMetadata() + " to " + 
event.getFile() );
+    }
+
+    public void metadataInstalling( RepositoryEvent event )
+    {
+        println( "metadataInstalling", event.getMetadata() + " to " + 
event.getFile() );
+    }
+
+    public void metadataInvalid( RepositoryEvent event )
+    {
+        println( "metadataInvalid", event.getMetadata().toString() );
+    }
+
+    public void metadataResolved( RepositoryEvent event )
+    {
+        println( "metadataResolved", event.getMetadata() + " from " + 
event.getRepository() );
+    }
+
+    public void metadataResolving( RepositoryEvent event )
+    {
+        println( "metadataResolving", event.getMetadata() + " from " + 
event.getRepository() );
+    }
+
+    private void println( String event, String message )
+    {
+        out.println( "Aether Repository - " + event + ": " + message );
+    }
+}

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