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.time.LocalDateTime;
  
  /**
   * Repository event. Repository events are used for providing information about repository changes.
   *
   * @param <T>
   */
  public class RepositoryEvent<T> {
  
      final EventType type;
      final Repository repo;
      final T value;
      final T oldValue;
      final LocalDateTime instant;
  
      public RepositoryEvent(EventType type, Repository repo, T oldValue, T value) {
          this.type = type;
          this.repo = repo;
          this.value = value;
          this.oldValue = oldValue;
          this.instant = LocalDateTime.now();
      }
  
      public interface EventType {
          String name();
      }
  
  
      public EventType getType() {
          return type;
      };
  
      public Repository getRepository() {
          return repo;
      };
  
      public T getValue() {
          return value;
      }
  
      public T getOldValue() {
          return oldValue;
      }
  
      public LocalDateTime getInstant() {
          return instant;
      }
  }