我的NHibernate曲折之行

之前，看過很多nhibernate的東西。特別是 yjinglee的nhibernate之旅系列比較經典。看得多了，但是還沒有真正的從頭到尾的做過一邊。今天從頭到尾做了一遍，發現問題還真多。我就將我做的過程和在這中間碰到的問題跟大家分享一下。也可以讓一些初學的朋友少走一些彎路，當然我碰到的很多問題在網上都能找到答案，我也就將一些需要注意點，和出錯的點收集一下，然後放到一起，節省大家時間去瘋狂google。大致過程參照yjinglee的nhibernate之旅(2)：第乙個nhibernate程式

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

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

這裡只是增加了資料庫鏈結字串，注意：這裡的connection string在nhibernate的配置檔案中要用到，所以要保持一致。這裡如果要將資料庫從mssql遷移到oracle，那麼我們只要將上面的注釋去掉，然後將下面這句mssql的注釋掉就可以了。

然後來看nhibernate的兩個配置檔案：nhibernatemssql.config和nhibernateoracle.config

>nhibernatemssql.config：

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

nhibernate.dialect.mssql2005dialect

nhibernate.connection.driverconnectionprovider

nhibernate.driver.sqlclientdriver

connection string

readcommitted

>nhibernateoracle.config

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

nhibernate.dialect.oracle10dialect

nhibernate.connection.driverconnectionprovider

nhibernate.driver.oracleclientdriver

connection string

readcommitted

using system;

using system.collections.generic;

using system.linq;

using system.text;

using nhibernate;

using model.entities;

//using nhibernate.cfg;

namespace dal

}public getstudent(isession session)

public student getstudentbyid(int studentid) }}

form.cs **：

the following types may not be used as proxies:

model.entities.course:method get_isdeleted should be 'public/protected virtual' or 'protected internal virtual'

model.entities.course: method set_isdeleted should be 'public/protected virtual' or 'protected internal virtual'

model.entities.course: method get_ischanged should be 'public/protected virtual' or 'protected internal virtual'

model.entities.course: method set_ischanged should be 'public/protected virtual' or 'protected internal virtual'

model.entities.course: method clone should be 'public/protected virtual' or 'protected internal virtual'

model.entities.studentcourse: method get_isdeleted should be 'public/protected virtual' or 'protected internal virtual'

model.entities.studentcourse: method set_isdeleted should be 'public/protected virtual' or 'protected internal virtual'

model.entities.studentcourse: method get_ischanged should be 'public/protected virtual' or 'protected internal virtual'

model.entities.studentcourse: method set_ischanged should be 'public/protected virtual' or 'protected internal virtual'

model.entities.studentcourse: method clone should be 'public/protected virtual' or 'protected internal virtual'

model.entities.student: method get_isdeleted should be 'public/protected virtual' or 'protected internal virtual'

model.entities.student: method set_isdeleted should be 'public/protected virtual' or 'protected internal virtual'

model.entities.student: method get_ischanged should be 'public/protected virtual' or 'protected internal virtual'

model.entities.student: method set_ischanged should be 'public/protected virtual' or 'protected internal virtual'

model.entities.student: method clone should be 'public/protected virtual' or 'protected internal virtual'

這個就是在老趙今天發的我對nhibernate的感受（2）：何必到處都virtual

的提到的到處都是virtual了，在mygeneration生成的對映檔案中，有些方法並不是virtural的，所以會出現編譯通過，但是執行出錯的情況。

解決方案，當然是在每個方法和屬性上面加上virtual了。

處理完這個錯誤，當然還是沒有那麼順利就過關啦，第三個錯誤依舊報來！

這也就是需要注意的另外一點：在2.1版本中的nhibernate中需要在nhibernate配置檔案中加入

nhibernate.bytecode.castle.proxyfactoryfactory, nhibernate.bytecode.castle

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