ServiceStack OrmLite Sql 查询日志记录 [英] ServiceStack OrmLite Sql Query Logging

问题描述

根据 Service Stack 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

As per the Service Stack Ormlite documentation. I should generate the sql query in debug mode. But, I am not able to see those queries. Simple code

 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>();
    }

推荐答案

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:

You would need the debug build of OrmLite to see the SQL output. There are a couple of other ways you can view the last 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:

You can also profile the db connection by setting a connection filter, which you can do with:

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 语句的分析计时输出.此处提供了一个示例:

Which if you ran this in ServiceStack will let you see the profiled timing outputs of all the SQL statements. An example of what this looks like is available here:

https://gist.github.com/1787443

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