Nhibernate一些问题解决方法
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                                Nhibernate一些问题解决方法
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                            問題1.未能找到元素“urn:nhibernate-mapping-2.0:hibernate-mapping”的架構信息。 file:///c:/inetpub/wwwroot/WebApplication1/bin/Course.hbm.xml, (2, 2)處發生了錯誤。 
解決辦法:
一、Test.Model.Person.hbm.xml(2,2): XML validation error: 未能找到元素“urn:nhibernate-mapping-2.0:hibernate-mapping”的架構信息。
????? 將2.0改為2.2
二、 The following types may not be used as proxies:
??????? Test.Model.Person: method set_Id should be virtual
??????? Test.Model.Person: method get_Name should be virtual
??????? Test.Model.Person: method set_Name should be virtual
??????? Test.Model.Person: method get_Id should be virtual
??????? 類配置文件中Class的Lazy改為false
??????? 網上搜到的三種解決方案:
??????? 1.? You can follow the advice of the exception and add "virtual" to all of your properties, and make sure your class is non-sealed. Obviously you'll want to do this if you think you might want to take advantage of the lazy-initializing proxy feature.? However, changing your classes may not be practical or advisable if you have a legacy codebase, or it may just bother you that a "transparent" persistence framework is dictating how you design certain aspects of your value classes.? That's where Options 2 and 3 come in.? Both of those involve changing back to the old behavior.
????????? 2.? To change the lazy-initialization proxy setting for a specific class, you can add a "lazy='false'" attribute to the <class> mapping element.? This might look something like: <class
??? name="NorthwindClasses.Category, NorthwindClasses"
??? table="Categories"
??? lazy="false"
>??????? 3.? To change the lazy-initialization proxy setting for all classes in a given mapping file, you can add a "default-lazy='false'" attribute to the <hibernate-mapping> element, as follows: <hibernate-mapping xmlns="urn:nhibernate-mapping-2.0" default-lazy="false"> Unfortunately, Option 3 doesn't really help you much if you do one <class> mapping per <hibernate-mapping> file, a practice which I personally follow and recommend.? It's too bad, but there doesn't seem to be any way to set this default in the <nhibernate> global configuration.? But if you do happen to have all of your <class>'s in one .hbm.xml file, "default-lazy" can help you out.
注:我是修改2.0為2.2解決問題的
問題2.
The following types may not be used as proxies:
Entitys.login: method get_Upwd should be virtual
Entitys.login: method get_id should be virtual
Entitys.login: method get_Uname should be virtual
Entitys.login: method set_Uname should be virtual
Entitys.login: method get_LastTime should be virtual
Entitys.login: method set_Upwd should be virtual
Entitys.login: method set_id should be virtual
Entitys.login: method set_LastTime should be virtual
----------------------------------------------------------------------------
引起問題的原因:
NHibernate 1.2 默認為類啟用了延遲加載功能
解決方法:
方法1.在映射文件 class 標簽中添加 Lazy="false" 屬性
例:<class name="Entitys.login, Entitys" table="login" lazy="false">
方法2.為每個實體類的屬性成員 添加 “ virtual ” 修飾符;
例:? ?
????? public virtual? int id
????? {
???????? get {? return m_id; }
???????? set {? m_id = value; }
????? }
注:我是在映射文件 class 標簽中添加 Lazy="false" 屬性解決問題的
問題3。
The dialect was not set. Set the property hibernate.dialect
注:在配置文件里設定Nhibernate的方言即可,如NHibernate.Dialect.OracleDialect,NHibernate.Dialect.MsSql2000Dialect
-----------搞定
問題4.
映射的時候,class name值的問題
class name=“命名空間.類名,項目名”
即class name=“NameSpace.類名,ProjectName”
                        
                        
                        解決辦法:
一、Test.Model.Person.hbm.xml(2,2): XML validation error: 未能找到元素“urn:nhibernate-mapping-2.0:hibernate-mapping”的架構信息。
????? 將2.0改為2.2
二、 The following types may not be used as proxies:
??????? Test.Model.Person: method set_Id should be virtual
??????? Test.Model.Person: method get_Name should be virtual
??????? Test.Model.Person: method set_Name should be virtual
??????? Test.Model.Person: method get_Id should be virtual
??????? 類配置文件中Class的Lazy改為false
??????? 網上搜到的三種解決方案:
??????? 1.? You can follow the advice of the exception and add "virtual" to all of your properties, and make sure your class is non-sealed. Obviously you'll want to do this if you think you might want to take advantage of the lazy-initializing proxy feature.? However, changing your classes may not be practical or advisable if you have a legacy codebase, or it may just bother you that a "transparent" persistence framework is dictating how you design certain aspects of your value classes.? That's where Options 2 and 3 come in.? Both of those involve changing back to the old behavior.
????????? 2.? To change the lazy-initialization proxy setting for a specific class, you can add a "lazy='false'" attribute to the <class> mapping element.? This might look something like: <class
??? name="NorthwindClasses.Category, NorthwindClasses"
??? table="Categories"
??? lazy="false"
>??????? 3.? To change the lazy-initialization proxy setting for all classes in a given mapping file, you can add a "default-lazy='false'" attribute to the <hibernate-mapping> element, as follows: <hibernate-mapping xmlns="urn:nhibernate-mapping-2.0" default-lazy="false"> Unfortunately, Option 3 doesn't really help you much if you do one <class> mapping per <hibernate-mapping> file, a practice which I personally follow and recommend.? It's too bad, but there doesn't seem to be any way to set this default in the <nhibernate> global configuration.? But if you do happen to have all of your <class>'s in one .hbm.xml file, "default-lazy" can help you out.
注:我是修改2.0為2.2解決問題的
問題2.
The following types may not be used as proxies:
Entitys.login: method get_Upwd should be virtual
Entitys.login: method get_id should be virtual
Entitys.login: method get_Uname should be virtual
Entitys.login: method set_Uname should be virtual
Entitys.login: method get_LastTime should be virtual
Entitys.login: method set_Upwd should be virtual
Entitys.login: method set_id should be virtual
Entitys.login: method set_LastTime should be virtual
----------------------------------------------------------------------------
引起問題的原因:
NHibernate 1.2 默認為類啟用了延遲加載功能
解決方法:
方法1.在映射文件 class 標簽中添加 Lazy="false" 屬性
例:<class name="Entitys.login, Entitys" table="login" lazy="false">
方法2.為每個實體類的屬性成員 添加 “ virtual ” 修飾符;
例:? ?
????? public virtual? int id
????? {
???????? get {? return m_id; }
???????? set {? m_id = value; }
????? }
注:我是在映射文件 class 標簽中添加 Lazy="false" 屬性解決問題的
問題3。
The dialect was not set. Set the property hibernate.dialect
注:在配置文件里設定Nhibernate的方言即可,如NHibernate.Dialect.OracleDialect,NHibernate.Dialect.MsSql2000Dialect
-----------搞定
問題4.
映射的時候,class name值的問題
class name=“命名空間.類名,項目名”
即class name=“NameSpace.類名,ProjectName”
轉載于:https://www.cnblogs.com/umain/archive/2008/08/14/1267544.html
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