Entity Framework 6迁移是否可以包含围绕脚本的事务？

Question

非常简单的问题,我在实体框架6中使用迁移,并且像命令一样

update-database -script

但有没有一种方法可以生成脚本但是用事务包装它？

问题是,如果脚本失败,我必须取消它

Answer 1

这就是我只在发布模式下使用来生成脚本:

public class MigrationScriptBuilder : SqlServerMigrationSqlGenerator
{
#if !DEBUG
    protected override void Generate(SqlOperation sqlOperation)
    {
        Statement("GO");

        base.Generate(sqlOperation);

        Statement("GO");
    }

    public override IEnumerable<MigrationStatement> Generate(IEnumerable<MigrationOperation> migrationOperations, string providerManifestToken)
    {
        yield return new MigrationStatement {Sql = "BEGIN TRAN"};

        foreach (var migrationStatement in base.Generate(migrationOperations, providerManifestToken))
        {
            yield return migrationStatement;
        }

        yield return new MigrationStatement {Sql = "COMMIT TRAN"};
    }
#endif
}

你应该把它连接到你的DatabaseMigrationsConfiguration.例:

public sealed class DatabaseMigrationsConfiguration : DbMigrationsConfiguration<DatabaseContext>
{
    public DatabaseMigrationsConfiguration()
    {
        SetSqlGenerator("System.Data.SqlClient", new MigrationScriptBuilder());
    }
}