SqlMetal無法從Sqlite數據庫創建DBML

Question

我正在嘗試使用新的Mono 2.6 SqlMetal工具爲簡單的Sqlite數據庫創建DBML文件。該模式是非常簡單的如下：

CREATE TABLE Tags (
    Id    INTEGER PRIMARY KEY, 
    TagName   TEXT, 
    Description  TEXT); 
CREATE TABLE Trends (
    TagId   INTEGER NOT NULL, 
    Timestamp  DATETIME NOT NULL, 
    Value   TEXT, 
    PRIMARY KEY (tagid, timestamp)); 

我嘗試使用以下命令來創建DBML文件：

sqlmetal.exe /conn:"Data Source=MyDatabase.db" /namespace:MyNamespace /provider:Sqlite /dbml:MyDatabase.dbml 

我得到以下輸出：

>>> Reading schema from SQLite database 
<<< Writing file 'MyDatabase.dbml' 
sqlmetal failed:System.InvalidOperationException: There was an error reflecting type 'DbLinq.Schema.Dbml.Database'. ---> 
System.InvalidOperationException: DbLinq.Schema.Dbml.Database is inaccessible due to its protection level. Only public types can be processed 
    at System.Xml.Serialization.ReflectionHelper.CheckSerializableType (System.Type type, Boolean allowPrivateConstructors) [0x00000] in <filename unknown>:0 
    at System.Xml.Serialization.XmlReflectionImporter.ImportClassMapping (System.Xml.Serialization.TypeData typeData, System.Xml.Serialization.XmlRootAttribute root, System.String defaultNamespace) [0x00000] in <filename unknown>:0 
    at System.Xml.Serialization.XmlReflectionImporter.ImportTypeMapping (System.Xml.Serialization.TypeData typeData, System.Xml.Serialization.XmlRootAttribute root, System.String defaultNamespace) [0x00000] in <filename unknown>:0 
    --- End of inner exception stack trace --- 
    at System.Xml.Serialization.XmlReflectionImporter.ImportTypeMapping (System.Xml.Serialization.TypeData typeData, System.Xml.Serialization.XmlRootAttribute root, System.String defaultNamespace) [0x00000] in <filename unknown>:0 
    at System.Xml.Serialization.XmlReflectionImporter.ImportTypeMapping (System.Type type, System.Xml.Serialization.XmlRootAttribute root, System.String defaultNamespace) [0x00000] in <filename unknown>:0 
    at System.Xml.Serialization.XmlSerializer..ctor (System.Type type, System.Xml.Serialization.XmlAttributeOverrides overrides, System.Type[] extraTypes, System.Xml.Serialization.XmlRootAttribute root, System.String defaultNamespace) [0x00000] in <filename unknown>:0 at System.Xml.Serialization.XmlSerializer..ctor (System.Type type) [0x00000] in <filename unknown>:0 
    at DbLinq.Schema.Dbml.DbmlSerializer.Write (System.IO.Stream xmlStream, DbLinq.Schema.Dbml.Database dbml) [0x00000] in <filename unknown>:0 
    at DbMetal.Generator.Implementation.Processor.WriteSchema (DbLinq.Schema.Dbml.Database dbSchema, ISchemaLoader schemaLoader, DbMetal.Parameters parameters) [0x00000] in <filename unknown>:0 
    at DbMetal.Generator.Implementation.Processor.ProcessSchema (DbMetal.Parameters parameters) [0x00000] in <filename unknown>:0 

我可以使用用於創建C＃代碼文件的/ code選項，但在生成DBML時總是失敗。

我是否缺少一個微妙的命令行選項，或者是SqlMetal的這個新版本不適用於Sqlite？

Answer 1

<羞澀笑嘻嘻>您是否相信我之前沒有嘗試過生成DBML文件？ < /羞澀笑嘻嘻>

短版本：這是一個你打的bug，沒有解決方法。我已將它歸檔爲http://code.google.com/p/dblinq2007/issues/detail?id=171。

更長版本：除了「拋棄System.Xml.Serialization」之外，似乎還沒有簡單的解決方案，因爲引用的DbLinq.Schema.Dbml.Database類型不能從System.Data.Linq.dll公開，原因很明顯。由於存在不同的錯誤，在Linux下使用DbMetal.exe構建DbLinq的「解決方法」不起作用。

抱歉給您帶來不便。