(1)、Nhibernate错误”No persister for ”
Nhibernate错误”No persister for <entity name>”
例如:”No persister for DomainModel.Entities.User”
1.检查hibernate.cfg.xml是否配置mapping 如:<mapping assembly="”DomainModel”/">
2.检查User.hbm.xml文件属性“生成操作”的值,从“内容”修改为“嵌入的资源”
(2)、Could not find the dialect in the configuration这个错误,
这是数据库配置问题
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.0">
换成
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2">
(3)、The ProxyFactoryFactory was not configured 报错
因为没有引用上面那个配置中的工厂类
所以在引用下 Required_For_LazyLoading文件夹下的 LinFu下的NHibernate.ByteCode.LinFu.dll
当然也可以用 Castle 那要改下配置</hibernate-mapping></hibernate-mapping></mapping></entity>
(4)、Could not compile the mapping document
解决办法:
调试查看到InnerText为,不应该为<hibernate-mapping
xmlns="urn:nhibernate-mapping-2.0">,然后我把改为
<hibernate-mapping
xmlns="urn:nhibernate-mapping-2.2">后,此问题解决.
(5)、NHibernate.InvalidProxyTypeException
The following types may not be used as proxies:
TestCleanSnow.BjkptOaxtCleanupsnow: method set_IsDeleted should be
virtual TestCleanSnow.BjkptOaxtCleanupsnow: method set_IsChanged should
be virtual TestCleanSnow.BjkptOaxtCleanupsnow: method Clone should be
virtual TestCleanSnow.BjkptOaxtCleanupsnow: method get_IsChanged should
be virtual TestCleanSnow.BjkptOaxtCleanupsnow: method get_IsDeleted
should be virtual
解决办法: 在XML的 <class
name="TestCleanSnow.BjkptOaxtCleanupsnow,TestCleanSnow"
table="B_JKPT_OAXT_CLEANUPSNOW"> 添加 lazy="false" .
(6)、在执行 session.Save(cs);
时,出现could not get next sequence value[SQL: SQL
not available] Nhibernate
解决办法:
把相应XML的
<generator class="native" /> 改为 <generator class="assigned" />
以上我做Oracle时出现的错误,操作sqlserver的时候应该为 <generator
class="native" />.
(7)、转载与: http://hi.baidu.com/zsea/blog/item/7d999e3d8a54c203baa1678d.html
一、Test.Model.Person.hbm.xml(2,2): XML
validation error:
未能找到元素“urn:nhibernate-mapping-2.0:hibernate-mapping”的架构信息。
将2.0改为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
类配置文件中Class的Lazy改为false
网上搜到的三种解决方案:
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.
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