content: /*
   * 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.
   */
  
  package org.apache.ambari.server.upgrade;
  
  import java.sql.SQLException;
  
  import org.apache.ambari.server.orm.DBAccessor;
  
  /**
   * Interface to encapsulate the logic that a DDL update requires for a particular feature or collection of tables.
   * Typically, each section initializes capture groups, then creates tables/columns, and then verifies expectations.
   */
  public interface SectionDDL {
  
    /**
     * Execute any commands to create table/columns and store in the capture group.
     * @param dbAccessor
     * @throws SQLException
     */
    void execute(DBAccessor dbAccessor) throws SQLException;
  
    /**
     * Retrieve the capture groups and make assertions about tables/columns created.
     * @param dbAccessor
     * @throws SQLException
     */
    void verify(DBAccessor dbAccessor) throws SQLException;
  }
  