[MRM-410] Dependency Tree is not shown in artifact details screen.

* Refactored project resolution into ProjectModelResolverFactory component.
* All resolution access points now use this factory.
* Created ResolverFactoryInit as plexus component load-on-start, to hookup database to resolver stack.
* Created archiva:dependency-tree taglib



git-svn-id: https://svn.apache.org/repos/asf/maven/archiva/trunk@548008 13f79535-47bb-0310-9956-ffa450edef68

2 files changed, 219 insertions, 0 deletions

diff --git a/archiva-database/src/main/java/org/apache/maven/archiva/database/project/DatabaseProjectModelResolver.java b/archiva-database/src/main/java/org/apache/maven/archiva/database/project/DatabaseProjectModelResolver.java
new file mode 100644
index 000000000..8c1f7ec4d
--- /dev/null
+++ b/archiva-database/src/main/java/org/apache/maven/archiva/database/project/DatabaseProjectModelResolver.java
@@ -0,0 +1,66 @@
+package org.apache.maven.archiva.database.project;
+
+/*
+ * 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.archiva.database.ArchivaDAO;
+import org.apache.maven.archiva.database.ArchivaDatabaseException;
+import org.apache.maven.archiva.database.ObjectNotFoundException;
+import org.apache.maven.archiva.model.ArchivaProjectModel;
+import org.apache.maven.archiva.model.VersionedReference;
+import org.apache.maven.archiva.repository.project.ProjectModelException;
+import org.apache.maven.archiva.repository.project.ProjectModelResolver;
+
+/**
+ * Resolves a project model from the database. 
+ *
+ * @author <a href="mailto:joakim@erdfelt.com">Joakim Erdfelt</a>
+ * @version $Id$
+ * 
+ * @plexus.component role="org.apache.maven.archiva.repository.project.ProjectModelResolver"
+ *                   role-hint="database"
+ */
+public class DatabaseProjectModelResolver
+    implements ProjectModelResolver
+{
+    /**
+     * @plexus.requirement role-hint="jdo"
+     */
+    private ArchivaDAO dao;
+
+    public ArchivaProjectModel resolveProjectModel( VersionedReference reference )
+        throws ProjectModelException
+    {
+        try
+        {
+            ArchivaProjectModel model = dao.getProjectModelDAO().getProjectModel( reference.getGroupId(),
+                                                                                  reference.getArtifactId(),
+                                                                                  reference.getVersion() );
+            return model;
+        }
+        catch ( ObjectNotFoundException e )
+        {
+            return null;
+        }
+        catch ( ArchivaDatabaseException e )
+        {
+            return null;
+        }
+    }
+}
diff --git a/archiva-database/src/main/java/org/apache/maven/archiva/database/project/ProjectModelToDatabaseListener.java b/archiva-database/src/main/java/org/apache/maven/archiva/database/project/ProjectModelToDatabaseListener.java
new file mode 100644
index 000000000..b4afc78d4
--- /dev/null
+++ b/archiva-database/src/main/java/org/apache/maven/archiva/database/project/ProjectModelToDatabaseListener.java
@@ -0,0 +1,153 @@
+package org.apache.maven.archiva.database.project;
+
+/*
+ * 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.archiva.database.ArchivaDAO;
+import org.apache.maven.archiva.database.ArchivaDatabaseException;
+import org.apache.maven.archiva.database.ObjectNotFoundException;
+import org.apache.maven.archiva.model.ArchivaProjectModel;
+import org.apache.maven.archiva.model.VersionedReference;
+import org.apache.maven.archiva.repository.project.ProjectModelException;
+import org.apache.maven.archiva.repository.project.ProjectModelResolver;
+import org.apache.maven.archiva.repository.project.resolvers.FilesystemBasedResolver;
+import org.apache.maven.archiva.repository.project.resolvers.ProjectModelResolutionListener;
+import org.codehaus.plexus.logging.AbstractLogEnabled;
+
+import java.util.List;
+
+/**
+ * Just in Time save of project models to the database, implemented as a listener
+ * on {@link ProjectModelResolver} objects that implement {@link FilesystemBasedResolver}.
+ *
+ * @author <a href="mailto:joakim@erdfelt.com">Joakim Erdfelt</a>
+ * @version $Id$
+ * 
+ * @plexus.component 
+ *              role="org.apache.maven.archiva.repository.project.resolvers.ProjectModelResolutionListener"
+ *              role-hint="model-to-db"
+ */
+public class ProjectModelToDatabaseListener
+    extends AbstractLogEnabled
+    implements ProjectModelResolutionListener
+{
+    /**
+     * @plexus.requirement role-hint="jdo"
+     */
+    private ArchivaDAO dao;
+
+    private void saveInDatabase( ArchivaProjectModel model )
+        throws ProjectModelException
+    {
+        try
+        {
+            dao.getProjectModelDAO().saveProjectModel( model );
+        }
+        catch ( ArchivaDatabaseException e )
+        {
+            throw new ProjectModelException( "Unable to save model to database: " + e.getMessage(), e );
+        }
+    }
+
+    private void removeFromDatabase( ArchivaProjectModel model )
+        throws ProjectModelException
+    {
+        try
+        {
+            dao.getProjectModelDAO().deleteProjectModel( model );
+        }
+        catch ( ArchivaDatabaseException e )
+        {
+            throw new ProjectModelException( "Unable to remove existing model from database: " + e.getMessage(), e );
+        }
+    }
+
+    private boolean existsInDatabase( ArchivaProjectModel model )
+        throws ProjectModelException
+    {
+        try
+        {
+            ArchivaProjectModel dbmodel = dao.getProjectModelDAO().getProjectModel( model.getGroupId(),
+                                                                                    model.getArtifactId(),
+                                                                                    model.getVersion() );
+
+            return ( dbmodel != null );
+        }
+        catch ( ObjectNotFoundException e )
+        {
+            return false;
+        }
+        catch ( ArchivaDatabaseException e )
+        {
+            throw new ProjectModelException( "Unable to check for existing model from database: " + e.getMessage(), e );
+        }
+    }
+
+    public void resolutionAttempting( VersionedReference projectRef, ProjectModelResolver resolver )
+    {
+        /* do nothing */
+    }
+
+    public void resolutionError( VersionedReference projectRef, ProjectModelResolver resolver, Exception cause )
+    {
+        /* do nothing */
+    }
+
+    public void resolutionMiss( VersionedReference projectRef, ProjectModelResolver resolver )
+    {
+        /* do nothing */
+    }
+
+    public void resolutionNotFound( VersionedReference projectRef, List resolverList )
+    {
+        /* do nothing */
+    }
+
+    public void resolutionStart( VersionedReference projectRef, List resolverList )
+    {
+        /* do nothing */
+    }
+
+    public void resolutionSuccess( VersionedReference projectRef, ProjectModelResolver resolver,
+                                   ArchivaProjectModel model )
+    {
+        if ( !( resolver instanceof FilesystemBasedResolver ) )
+        {
+            // Nothing to do. skip it.
+            return;
+        }
+
+        model.setOrigin( "filesystem" );
+
+        try
+        {
+            // Test if it exists.
+            if ( existsInDatabase( model ) )
+            {
+                removeFromDatabase( model );
+            }
+
+            saveInDatabase( model );
+        }
+        catch ( ProjectModelException e )
+        {
+            getLogger().warn( e.getMessage(), e );
+        }
+    }
+}