nhibernate-mapping

问题 I have following mapping definitions: <class name="Role" table="Role" optimistic-lock="version" > <id name="Id" type="Int32" unsaved-value="0" > <generator class="native" /> </id> <property name="RoleName" type="String(40)" not-null="true" /> <bag name="UsersInRole" generic="true" lazy="true" cascade="all" table="UserRoles" > <key column="RoleId" /> <many-to-many column="UserId" class="SystemUser, Domain"/> </bag> and <id name="Id" type="Int32" unsaved-value="0" > <generator class="native" />

问题 I have following mapping definitions: <class name="Role" table="Role" optimistic-lock="version" > <id name="Id" type="Int32" unsaved-value="0" > <generator class="native" /> </id> <property name="RoleName" type="String(40)" not-null="true" /> <bag name="UsersInRole" generic="true" lazy="true" cascade="all" table="UserRoles" > <key column="RoleId" /> <many-to-many column="UserId" class="SystemUser, Domain"/> </bag> and <id name="Id" type="Int32" unsaved-value="0" > <generator class="native" />

问题 I've been fighting with an NHibernate set-up for a few days now and just can't figure out the correct way to set out my mapping so it works like I'd expect it to. There's a bit of code to go through before I get to the problems, so apologies in advance for the extra reading. The setup is pretty simple at the moment, with just these tables: Category CategoryId Name Item ItemId Name ItemCategory ItemId CategoryId An item can be in many categories and each category can have many items (simple

问题 I need to create a custom type for NHibernate by writing a new mapper class that implements IUserType . While it is relatively straightforward to override most of the methods and properties, I get some difficulties to understand how to deal correctly with the following members: object Assemble(object cached, object owner); object DeepCopy(object value); object Disassemble(object value); object Replace(object original, object target, object owner); I do not understand what is exactly their

问题 I am trying to develop my very first project with Nhibernate 3.0. I've gone through loads of material (blogs, papers and samples) and I think I can understand the basics, pretty much. I think I've understood the meaning of different types of collection but than when I see the examples found on the Internet I think I haven't really understood. The documentation says that you should use a Set when you do not want duplicates and a List/Bag when you want to allow duplicates. Most of the samples I

问题 I know annotations to do the hibernate mapping in Java and am looking now for a similar way to do the same in C# and NHibernate. I found out that there exists several approaches do the mapping in xml files NHibernate.Mapping.Attributes (NHMA) Fluent are there any more?? I tried NHMA and found out it had some blocking points for me... I don't want you to discuss, whats the best way to map models to NHibernate, but I was looking for a good comparison on the internet. Do you know such sites?

问题 I have the two separate tables. [users] [ roles ] +-----+ +-------+ | id | |user_id| +-----+ +-------+ | value | <- [Represented by the enum] +-------+ And the models for them. class User { int id; IList<Roles> Roles; } enum Roles { Worker, Manager, Director } As you see it is simple "one to many". User has many roles. How do I map those models in XML? 回答1: how is your mapping? did you try something like this: HasMany(x => x.Roles) .Cascade.All() .Table("UserRoles") .Element("RolesEnum"); 回答2

问题 I'm just starting out with NHibernate and am trying to do a mapping for my model. (this is a model-first, TDD approach, just creating the database now) My Class hierachy is something like : I'm trying to work out how to map this now using a mapping xml file? This is my table and what I want them to map to QuestionId - Int - [Question.Id] PmqccFormId - Int - [Question.PmqccForm.Id] InputtedAnswer - Int - [NormalQuestion.InputtedAnswer or JobVelocityQuestion.InputtedAnswer - they are both enums

问题 There are two tables Person and Address. I have a mapping table PersonAddressMap which contains an additional column IsCurrent other than the two foreign keys (no explicit primary key column). I have created three mapping classes one each for Person, Address and PersonAddressMap. I need to access all the Addresses of a Person and also access all the Persons who have a particular address from Address, so I have a one-to-many to PersonAddressMap in both the Person and Address class. Now the

问题 I'm trying to join a table to retreive and set a property on a POCO. Here's the scenario... *NOTE - An application can belong to many user sessions. UserSession (Table) UserSessionId PK ApplicationId FK UserName Application (Table) ApplicationId PK Name UserSession (Poco) string UserName get; string ApplicationName get; I've tried a join like this: Join("Application", j => j.Inverse().KeyColumn("ApplicationId").Map(x => x.ApplicationName)); However, this uses the primary column of the