package org.apache.archiva.metadata.repository.storage;
   
   /*
    * 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.archiva.metadata.model.ArtifactMetadata;
  import org.apache.archiva.metadata.model.ProjectMetadata;
  import org.apache.archiva.metadata.model.ProjectVersionMetadata;
  import org.apache.archiva.filter.Filter;
  import org.apache.archiva.model.ArtifactReference;
  import org.apache.archiva.policies.ProxyDownloadException;
  import org.apache.archiva.repository.ManagedRepository;
  import org.apache.archiva.repository.ManagedRepositoryContent;
  import org.apache.archiva.xml.XMLException;
  
  import java.io.IOException;
  import java.util.Collection;
  
  // FIXME: we should drop the repositoryId parameters and attach this to an instance of a repository storage
  public interface RepositoryStorage
  {
      ProjectMetadata readProjectMetadata( String repoId, String namespace, String projectId );
  
      ProjectVersionMetadata readProjectVersionMetadata( ReadMetadataRequest readMetadataRequest )
          throws RepositoryStorageMetadataInvalidException, RepositoryStorageMetadataNotFoundException,
          RepositoryStorageRuntimeException;
  
      Collection<String> listRootNamespaces( String repoId, Filter<String> filter )
          throws RepositoryStorageRuntimeException;
  
      Collection<String> listNamespaces( String repoId, String namespace, Filter<String> filter )
          throws RepositoryStorageRuntimeException;
  
      Collection<String> listProjects( String repoId, String namespace, Filter<String> filter )
          throws RepositoryStorageRuntimeException;
  
      Collection<String> listProjectVersions( String repoId, String namespace, String projectId, Filter<String> filter )
          throws RepositoryStorageRuntimeException;
  
      Collection<ArtifactMetadata> readArtifactsMetadata( ReadMetadataRequest readMetadataRequest )
          throws RepositoryStorageRuntimeException;
  
      // FIXME: reconsider this API, do we want to expose storage format in the form of a path?
      ArtifactMetadata readArtifactMetadataFromPath( String repoId, String path )
          throws RepositoryStorageRuntimeException;
      
      /**
       * A relocation capable client will request the POM prior to the artifact, and will then read meta-data and do
       * client side relocation. A simplier client (like maven 1) will only request the artifact and not use the
       * metadatas.
       * <p>
       * For such clients, archiva does server-side relocation by reading itself the &lt;relocation&gt; element in
       * metadatas and serving the expected artifact.
       * @param managedRepository the used managed repository
       * @param artifact the artifact reference
       * @throws org.apache.archiva.policies.ProxyDownloadException
       */    
      void applyServerSideRelocation( ManagedRepository managedRepository, ArtifactReference artifact )
          throws ProxyDownloadException;
  
      /**
       * add an other method to evaluate real path as when receiving -SNAPSHOT (for maven storage)
       * request redirect to the last build
       * @param requestPath the web uri request
       * @param managedRepository the used managed repository can be <code>null</code> so last version won't be resolved
       * @return the file path
       * @since 2.0.0
       */
      String getFilePath( String requestPath, org.apache.archiva.repository.ManagedRepository managedRepository );
  
      String getFilePathWithVersion( final String requestPath, ManagedRepositoryContent managedRepositoryContent )
              throws RelocationException, XMLException, IOException;
  
  
  }