content: /*
   This file is part of Airsonic.
  
   Airsonic is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.
  
   Airsonic is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
  
   You should have received a copy of the GNU General Public License
   along with Airsonic.  If not, see <http://www.gnu.org/licenses/>.
  
   Copyright 2016 (C) Airsonic Authors
   Based upon Subsonic, Copyright 2009 (C) Sindre Mehus
   */
  package org.airsonic.player.dao;
  
  import org.springframework.jdbc.core.JdbcTemplate;
  import org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate;
  
  import javax.sql.DataSource;
  
  /**
   * DAO helper class which creates the data source, and updates the database schema.
   *
   * @author Sindre Mehus
   */
  public interface DaoHelper {
  
      /**
       * Returns a JDBC template for performing database operations.
       *
       * @return A JDBC template.
       */
      JdbcTemplate getJdbcTemplate();
  
      /**
       * Returns a named parameter JDBC template for performing database operations.
       *
       * @return A named parameter JDBC template.
       */
      NamedParameterJdbcTemplate getNamedParameterJdbcTemplate();
  
      DataSource getDataSource();
  
      /**
       * Tries to perform a checkpoint against the database, if supported
       *
       * Database checkpoints will make sure that the database is written on the disk
       * and optimize on-disk storage.
       */
      public default void checkpoint() { }
  }
  