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;
  
  import org.apache.jena.graph.Node;
  import org.seaborne.delta.Id;
  import org.seaborne.delta.server.local.patchstores.filestore.FileEntry;
  import org.apache.jena.rdfpatch.PatchHeader;
  import org.apache.jena.rdfpatch.RDFChanges ;
  import org.apache.jena.rdfpatch.RDFPatch ;
  
  /** Holder for an {@link RDFPatch}. This carries with it system information
   * such as where the patch is stored and any local version number. 
   */
  public class Patch implements RDFPatch {
      // PatchWrapper
      
      private final RDFPatch patch;
      private final DataSource dataSource;
      private final FileEntry fileEntry;
      
      public Patch(boolean unused, RDFPatch patch, DataSource source, FileEntry entry) {
          this.patch = patch;
          this.dataSource = source;
          this.fileEntry = entry;
      }
      
      public RDFPatch get() { return patch ; }
      
      @Override
      public Node getId() {
          return patch.getId() ;
      }
  
      @Override
      public Node getPrevious() {
          return patch.getPrevious() ;
      }
  
      public Id getIdAsId() {
          return Id.fromNode(getId()) ;
      }
  
      public Id getPreviousIdAsId() {
          return Id.fromNode(getPrevious()) ;
      }
  
      @Override
      public void apply(RDFChanges changes) {
          patch.apply(changes) ;
      }
      
      @Override
      public PatchHeader header() {
          return patch.header() ;
      }
  
      public void play(RDFChanges changes) {
          patch.apply(changes) ;
      }
  
      @Override
      public boolean repeatable() {
          return patch.repeatable();
      }
  
      public DataSource getDataSource() {
          return dataSource;
      }
  
      public long getSourceVersion() {
          return fileEntry.version;
      }
  }