engine/schema/src/com/cloud/upgrade/dao/DbUpgrade.java

// 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
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// under the License.
package com.cloud.upgrade.dao;

import java.io.InputStream;
import java.sql.Connection;

public interface DbUpgrade {
    String[] getUpgradableVersionRange();

    String getUpgradedVersion();

    boolean supportsRollingUpgrade();

    /**
     * @return the script to prepare the database schema for the
     * data migration step.
     */
    InputStream[] getPrepareScripts();

    /**
     * Performs the actual data migration.
     */
    void performDataMigration(Connection conn);

    InputStream[] getCleanupScripts();
}