content: package act.db;
  
  /*-
   * #%L
   * ACT Framework
   * %%
   * Copyright (C) 2014 - 2017 ActFramework
   * %%
   * 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.
   * #L%
   */
  
  import act.data.Timestamped;
  import act.inject.param.NoBind;
  import org.osgl.$;
  
  @NoBind
  public abstract class TimeTrackingModelBase<
          ID_TYPE, MODEL_TYPE extends ModelBase,
          TIMESTAMP_TYPE, TIMESTAMP_TYPE_RESOLVER extends $.Function<TIMESTAMP_TYPE, Long>
          > extends ModelBase<ID_TYPE, MODEL_TYPE>
          implements TimeTrackingModel<TIMESTAMP_TYPE, TIMESTAMP_TYPE_RESOLVER>, Timestamped {
      @Override
      public boolean _isNew() {
          return null == _created();
      }
  
      @Override
      public long _timestamp() {
          return _timestampTypeResolver().apply(_lastModified());
      }
  }
  