content: package org.apache.archiva.repository;
  
  /*
   * 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.Set;
  
  /**
   * A repository content provider creates repository content instances for specific repository types.
   */
  public interface RepositoryContentProvider
  {
      /**
       * Returns true, if this content object supports the given layout otherwise, false.
       * @param layout the layout string
       * @return true, if layout is supported, otherwise false.
       */
      boolean supportsLayout(String layout);
  
      /**
       * Returns the repository types, this content object can be used for.
       *
       * @return all supported repository types.
       */
      Set<RepositoryType> getSupportedRepositoryTypes();
  
  
      /**
       * Returns true, if this content object supports the given repository type.
       *
       * @param type the type to check.
       * @return true, if the type is supported, otherwise false.
       */
      boolean supports(RepositoryType type);
  
      /**
       * Creates a new instance of RemoteRepositoryContent. The returned instance should be initialized
       * from the given repository data.
       *
       * @param repository the repository
       * @return a repository content instance
       * @throws RepositoryException if the layout is not supported, or a error occured during initialization
       */
      RemoteRepositoryContent createRemoteContent(RemoteRepository repository) throws RepositoryException;
  
      /**
       * Creates a new instance of ManagedRepositoryContent.
       *
       * @param repository the repository
       * @return a new instance
       * @throws RepositoryException if the layout is not supported, or a error occured during initialization
       */
      ManagedRepositoryContent createManagedContent( ManagedRepository repository) throws RepositoryException;
  
      /**
       * Creates a generic content object.
       *
       * @param repository the repository
       * @param clazz  the content class
       * @param <T> the generic type of the content
       * @param <V> the generic type of the repository (must correspond to the content class)
       * @return a new instance
       * @throws RepositoryException if the clazz, or layout is not supported, or something went wrong during initialization
       */
      <T extends RepositoryContent, V extends Repository> T createContent(Class<T> clazz, V repository) throws RepositoryException;
  }
  