c# - ServiceStack OrmLite Sql 查询日志

Question

根据服务堆栈 Ormlite 文档。我应该在调试模式下生成 sql 查询。但是，我看不到这些查询。简单的代码

 private static readonly string DataDirLoc =
        Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData) +
        "\\TargetIntegration\\Test\\Debug\\";



    private readonly string dbFileName = DataDirLoc +
                                              "Test.db3";

    [Test]
    public void Can_Generate_log() {
        //var writer = new TextWriterTraceListener(System.Console.Out);
        //Debug.Listeners.Add(writer);
        Debug.Write("this is a try");
        var dbFact = new OrmLiteConnectionFactory("Data Source={0};Version=3;".FormatParams(dbFileName), true,
                                                  SqliteOrmLiteDialectProvider.Instance);
          IDbConnection dbConnection = dbFact.OpenDbConnection();
       var dbCommand = dbConnection.CreateCommand();
        dbCommand.CreateTable<Contact>();
    }

Answer 1

您需要 OrmLite 的调试版本才能查看 SQL 输出。您可以通过其他几种方式查看最后一条 sql：

Console.WriteLine(dbCmd.GetLastSql());

您还可以通过设置连接过滤器来分析数据库连接，您可以这样做：

var dbFact = new OrmLiteConnectionFactory(
   "Data Source={0};Version=3;".Fmt(dbFileName), true, 
   SqliteOrmLiteDialectProvider.Instance) {
   ConnectionFilter = x => new ProfiledDbConnection(x, Profiler.Current)
};

如果您在ServiceStack中运行它，您将看到所有 SQL 语句的分析时序输出。此处提供了一个示例：

https://gist.github.com/1787443