package liquibase.executor;
   
   import liquibase.database.Database;
   import liquibase.exception.DatabaseException;
   import liquibase.sql.visitor.SqlVisitor;
   import liquibase.statement.CallableSqlStatement;
   import liquibase.statement.SqlStatement;
   
   import java.util.List;
  import java.util.Map;
  
  public interface Executor {
  
      void setDatabase(Database database);
  
      /** Read methods */
      Object queryForObject(SqlStatement sql, Class requiredType) throws DatabaseException;
  
      Object queryForObject(SqlStatement sql, Class requiredType, List<SqlVisitor> sqlVisitors) throws DatabaseException;
  
      long queryForLong(SqlStatement sql) throws DatabaseException;
  
      long queryForLong(SqlStatement sql, List<SqlVisitor> sqlVisitors) throws DatabaseException;
  
      int queryForInt(SqlStatement sql) throws DatabaseException;
  
      int queryForInt(SqlStatement sql, List<SqlVisitor> sqlVisitors) throws DatabaseException;
  
      List queryForList(SqlStatement sql, Class elementType) throws DatabaseException;
  
      List queryForList(SqlStatement sql, Class elementType, List<SqlVisitor> sqlVisitors) throws DatabaseException;
  
      List<Map> queryForList(SqlStatement sql) throws DatabaseException;
  
      List<Map> queryForList(SqlStatement sql, List<SqlVisitor> sqlVisitors) throws DatabaseException;
  
      /** Write methods */
      void execute(SqlStatement sql) throws DatabaseException;
  
      void execute(SqlStatement sql, List<SqlVisitor> sqlVisitors) throws DatabaseException;
  
      int update(SqlStatement sql) throws DatabaseException;
  
      int update(SqlStatement sql, List<SqlVisitor> sqlVisitors) throws DatabaseException;
  
      Map call(CallableSqlStatement csc, List declaredParameters, List<SqlVisitor> sqlVisitors) throws DatabaseException;
  
      /**
       * Adds a comment to the database. Currently does nothing but is over-ridden in the output JDBC template
       * 
       * @param message
       * @throws liquibase.exception.DatabaseException
       */
      void comment(String message) throws DatabaseException;
  
      boolean updatesDatabase();
  }