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;
  
  /**
   * Describe the capabilities a repository implementation supports.
   */
  public interface RepositoryCapabilities {
  
      /**
       * Returns true, if this repository has a mechanism for indexes
       * @return true, if this repository is indexable, otherwise false.
       */
      default boolean isIndexable() {
          return true;
      }
  
      /**
       * Returns true, if this repository type is storing its artifacts on the filesystem.
       * @return true, if this is a file based repository, otherwise false.
       */
      default boolean isFileBased() {
          return true;
      }
  
      /**
       * Returns true, if this repository allows to block redeployments to prevent overriding
       * released artifacts
       * @return true, if this repo can block redeployments, otherwise false.
       */
      default boolean canBlockRedeployments() {
          return true;
      }
  
      /**
       * Returns true, if the artifacts can be scanned for metadata retrieval or maintenance tasks
       * @return true, if this repository can be scanned regularily, otherwise false.
       */
      default boolean isScannable() {
          return true;
      }
  
      /**
       * Returns true, if this repository can use failover repository urls
       * @return true, if there is a failover mechanism for repository access, otherwise false.
       */
      default boolean allowsFailover() {
          return false;
      }
  
      /**
       * Returns the release schemes this repository type can handle
       */
      Set<ReleaseScheme> supportedReleaseSchemes();
  
      /**
       * Returns the layouts this repository type can provide
       * @return The list of layouts supported by this repository.
       */
      Set<String> supportedLayouts();
  
      /**
       * Returns additional capabilities, that this repository type implements.
       * @return A list of custom capabilities.
       */
      Set<String> customCapabilities();
  
      /**
       * Returns the supported features this repository type supports. This method returns
       * string that corresponds to fully qualified class names.
       * We use string representation to allow implementations provide their own feature
       * implementations if necessary and to avoid class errors.
       *
       * @return The list of supported features as string values.
       */
      Set<String> supportedFeatures();
  
  
  }
  