nhibernate-mapping

问题 My project (c#, nhibernate, npgsql, nlog) has one entity named Entry and should be mapped to the database table named test . Table contains some test entries. My application code is as follows: public void work() { ISessionFactory sessions = new Configuration().Configure().BuildSessionFactory(); ISession session = sessions.OpenSession(); IList<Entry> entries = session.CreateQuery("from Entry").List<Entry>(); foreach (Entry e in entries) { logger.Debug("Entry: " + e.id + " with " + e.name); }

问题 I'm working on a feature to add the ability for each of our customers to define a customized registration form for their account and I've run into a bit of a roadblock in creating my Fluent NHibernate mapping for one of the objects. There are two tables involved [RegistrationField] and [AccountRegistrationField] . [RegistrationField] contains a static list of all of the fields that are available to pick from as well as some information on how to render the field (e.g. should it be a textbox,

问题 Suppose I have this relationship: abstract class Base { int Id; int JoinedId; ... } class Joined { int Id; int Discriminator; ... } class Sub1 : Base { ... } class Sub2 : Base { ... } for the following tables: table Base ( Id int, JoinedId int, ... ) table Joined ( Id int, Discriminator int, ... ) I would like to set up a table-per-hierarchy inheritance mapping for the Base, Sub1, Sub2 relationships, but using the Disciminator property from the Joined class as the discriminator. Here's the

问题 I'm trying to get NHibernate to work. I've got this class: mm.k.Domain.Kampagne (namespace/assembly is mm.k.Domain) In another Visual Studio project (Assembly mm.k.Infrastructure) I got my Mapping files (in a Mappings directory), my hibernate.cfg.xml and some repositories. Heres my mapping file: <?xml version="1.0" encoding="utf-8" ?> <hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" assembly="mm.k.Domain" namespace="mm.k.Domain"> <class name="Kampagne" table="Kampagner"> <id name="Id">

问题 i got problems with saving when i use Guid as identifier. can anybody se what i am missing here? i create my own guid so i dont want it to be generated by database. NOTE: i have tried the guid.combo in mapping to without any success. public class Order { public virtual Guid Id { get; set; } public virtual ICollection<OrderItem> OrderItems { get; set; } public virtual User User { get; set; } public virtual DateTime? CreateDate { get; set; } public virtual DateTime? ShippedDate { get; set; }

问题 I have in project simple connection to database: public static string GetConnectionString() { return @"Data Source=.\SQLEXPRESS;AttachDbFilename=" + HttpContext.Current.Request.PhysicalApplicationPath + "Application.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True"; } Now I try to implement NHibernate to project. hibernate.cfg.xml here: <?xml version="1.0" encoding="utf-8"?> <hibernate-configuration xmlns="urn:nhibernate-configuration-2.2"> <session-factory> <property name=

问题 I have the following database table: Settings Key | Value ---------------|------------------- SomeSetting | Foo AnotherSetting | Bar ... | ... And want to map this to the following object: public class Settings { public virtual string SomeSetting { get; set; } public virtual string AnotherSetting { get; set; } } How could I accomplish this using (Fluent) NHibernate? 回答1: I would map the key/value pairs to a private IDictionary and expose the properties by accessing the dictionary. See Ayende

问题 I have an entity with a property whose column name contains a question mark. How do I map the column name so that an HQL query will correctly generate SQL with the column name wrapped appropriately (i.e. [] for SQL Server) instead of substituting a parameter for the question mark? I have tried wrapping the column name in backticks or square brackets but this doesn't work. 回答1: Backticks work fine for me. Remember to use them only in the mapping file, not in the HQL: <property name="Data1"

问题 In my legacy Database I have a situation like this: TableA (id_A[PK], cod_A) TableB (id_B[PK], cod_B, id_A[FK]) TableC (id_C[PK], cod_C, id_B[FK]) For several reasons I need to map these tables into a single class (Foo in this example) public class Foo { public virtual string IdA { get; set; } public virtual string CodA { get; set; } public virtual string IdB { get; set; } public virtual string CodB { get; set; } public virtual string IdC { get; set; } public virtual string CodC { get; set; }

问题 Using NHibernate.Mapping.Attributes, I have a entity class with something like: [Class] public class EntityA { ... [Id][Generator(class="guid")] public Guid Id {...} [Property] public string Property1 {...} ... } Let say if I add a transient entity to the persistence context with code like this: ... Guid id; using(ISession s = sessionFactory.OpenSession()) using(ITransaction t = s.BeginTransaction()) { EntityA entity = new EntityA(); entity.Property1 = "Some Value"; id = (Guid) s.Save(entity)