content: /*
   *  Licensed 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.
   *
   *  See the NOTICE file distributed with this work for additional
   *  information regarding copyright ownership.
   */
  
  package org.seaborne.delta.server.local.patchstores;
  
  import java.util.List;
  import java.util.stream.Stream;
  
  import org.apache.jena.rdfpatch.RDFPatch;
  import org.seaborne.delta.Id;
  import org.seaborne.delta.Version;
  
  /**
   * Interface for the bulk storage of patches.
   */
  public interface PatchStorage {
      /** Stream of all the patches - in no particular order */
      public Stream<Id> find();
  
      /** Store a patch */
      public void store(Id key, RDFPatch patch);
  
      /** Store a patch */
      public default void store(Version version, Id key, RDFPatch patch) {
          // Intercept for when PatchStorage is based on version.
          store(key, patch);
      }
  
      /** Get a patch */
      public RDFPatch fetch(Id key);
  
      /** Delete a patch */
      public void delete(Id id);
  
      /** Release all the patches and any other state for this {@code PatchStorage} */
      public default void release() { }
  
      /** Release all the patches and any other state for this {@code PatchStorage} */
      public default void delete() {
          // Copy to isolate.
          List<Id> x = find().toList();
          x.forEach(this::delete);
      }
  }
  