问题描述

我用单声道 (C#) 编写了一个简单的应用程序，它使用 NHibernate 和 MYSQL - 现在我想将它移植到 SQLite.

I wrote a simple app in mono (C#) that uses NHibernate with MYSQL - and I now want to port it to SQLite.

我希望(曾经)我可以简单地更改 hibernate.cfg.xml 并将其指向不同的数据库.这是我修改后的hibernate.cfg.xml:

My hope is (was) that I could simply change hibernate.cfg.xml and point it to a different database. Here is my modified hibernate.cfg.xml:

    <?xml version="1.0" encoding="utf-8" ?>

    <hibernate-configuration  xmlns="urn:nhibernate-configuration-2.2" >
        <session-factory name="NHibernate.Test">
            <property name="connection.driver_class">NHibernate.Driver.SQLite20Driver</property>
            <property name="connection.connection_string">
                Data Source=nhibernate_test.db;Version=3
            </property>
            <property name="dialect">NHibernate.Dialect.SQLiteDialect</property>
            <property name="query.substitutions">true=1;false=0</property>
            <property name="proxyfactory.factory_class">NHibernate.ByteCode.LinFu.ProxyFactoryFactory, NHibernate.ByteCode.LinFu</property>
        </session-factory>

</hibernate-configuration> 

问题是我收到一个错误，它无法找到 System.Data.SQLite.这并不让我感到惊讶，因为据我了解，在单声道中我们应该使用 Mono.Data.SQLite.

The problem is that I'm getting an error to the effect that it can't find System.Data.SQLite. This doesn't surprise me since, as I understand it, in mono we should be using Mono.Data.SQLite.

问题是(假设我正确理解了问题)我不知道如何告诉 NHibernate 使用 Mono.Data.SQLite 而不是 System.Data.SQLite.

The trouble is (assuming I'm understanding the problem correctly) I don't know how to tell NHibernate to use Mono.Data.SQLite instead of System.Data.SQLite.

这一切都是在 Linux 上完成的——如果这有什么不同的话.

This is all being done on Linux - if that makes any difference.

有人知道如何进行吗?

推荐答案

您需要让 nHibernate 了解 Mono.Data.SQLite 程序集.将此添加到配置中:

You need to make nHibernate aware of the Mono.Data.SQLite assembly. Add this to the configuration:

<add key="connection.driver_class" value="Name.Space.MonoSqliteDriver, AssemblyName" />

而且你还需要一个简单的 MonoSQLiteDriver 类:

And you also need a simple MonoSQLiteDriver class:

public class MonoSqliteDriver : NHibernate.Driver.ReflectionBasedDriver  
{  
    public MonoSqliteDriver() :   
        base("Mono.Data.Sqlite",  
        "Mono.Data.Sqlite.SqliteConnection",  
        "Mono.Data.Sqlite.SqliteCommand")  
    {  
    }  
    public override bool UseNamedPrefixInParameter {  
        get {  
            return true;  
        }  
    }  
    public override bool UseNamedPrefixInSql {  
        get {  
            return true;  
        }  
    }  
    public override string NamedPrefix {  
        get {  
            return "@";  
        }  
    }  
    public override bool SupportsMultipleOpenReaders {  
        get {  
            return false;  
        }  
    }  
}  

(代码取自 http://intellect.dk/post/Why-I-love-frameworks-with-lots-of-extension-points.aspx )

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