fluent-nhibernate

问题 I've crossed posted this in the FNH Google Group but here's the scoop: I have a table in a legacy database that has a composite ID. Well, the PK is implied since the table doesn't actually have a PK defined, but the natural PK is the combination of the WORKORDERID and IMAGEPATH columns: CREATE TABLE [WORKORDERIMG]( [WORKORDERID] [varchar](50) NULL, [IMAGEPATH] [varchar](250) NULL, [WOTASKID] [numeric](10, 0) NULL, [ATTACHEDBY] [nvarchar](100) NULL, [COMMENTS] [nvarchar](256) NULL,

问题 I'm using NHibernate + Fluent to handle my database, and I've got a problem querying for data which references other data. My simple question is: Do I need to define some "BelongsTo" etc in the mappings, or is it sufficient to define references on one side (see mapping sample below)? If so - how? If not please keep reading.. Have a look at this simplified example - starting with two model classes: public class Foo { private IList<Bar> _bars = new List<Bar>(); public int Id { get; set; }

问题 I'm using NHibernate + Fluent to handle my database, and I've got a problem querying for data which references other data. My simple question is: Do I need to define some "BelongsTo" etc in the mappings, or is it sufficient to define references on one side (see mapping sample below)? If so - how? If not please keep reading.. Have a look at this simplified example - starting with two model classes: public class Foo { private IList<Bar> _bars = new List<Bar>(); public int Id { get; set; }

问题 What do I need to use SQLite with NHibernate (and FluentNHibernate ) ? There is: System.Data.SQLite.dll and System.Data.SQLite.Linq.dll , (ADO.NET 2.0 provider) available from http://sourceforge.net/projects/sqlite-dotnet2/ and sqlite3.dll available as binary download http://www.sqlite.org/download.html What is the difference? Do I need both, or which one? The first option installs to C:/...Program Files. Can I copy it from there to my custom SharedLibs folder, or will something reference the

问题 I am using Fluent NHibernate and I like it ! I am having a little issue: The startup time is about 10 seconds and I don´t know how to optimize Fluent nHibernate To make this startup time less problematic, I put it on a Thread. Could somebody tell a solution to this? And reply with the code below modified to make the performance improvement? I saw something like this on: http://nhforge.org/blogs/nhibernate/archive/2009/03/13/an-improvement-on-sessionfactory-initialization.aspx but I don´t know

问题 How can I force NHibernate to do a RIGHT outer join or an INNER join instead of a LEFT outer join on a many to many collection? The reason I would want to do this is because of filtering applied to the collection elements. With a left join, you get the same number of rows returned as an unfiltered query, but the elements that are filtered out just show NULL for all of the fields. However, with a right join, the correct number of rows and elements are returned from the query. I would expect

问题 I have some instances for reporting where executing sprocs is easier and simpler than complicated QueryOver statements. I have a DTO, not an entity, that represents the data returned from the query and want to populate the results of the query into the DTO. I am using named queries and session.GetNamedQuery() to execute the query. Do I have to create mapping files for the DTO? If so, is is possible to let NHibernate/FluentNHibernate know that it should not create tables for the DTO? My units

问题 My model looks something like this: public class Product { public string Name {get; set;} public string Description {get; set;} public double Price {get; set;} public List<string> Features {get; set;} } I want my database table to be flat - the List should be stored as a delimited string: Feature one|Feature two|Feature three for example. When retrieved from the db, it should place each of those items back into a List Is this possible? 回答1: I'm doing the very same in my current project, only

问题 I have a mapping like this: HasMany(x => x.Orders).KeyColumn("CustomerID"); Which is causing a constraint like this to be generated by schemaexport: alter table [CustomerOrder] add constraint FK45B3FB85AF01218D foreign key (CustomerID) references [Customer] I have tried adding .NotFound.Ignore() like on a References() mapping to disable the constraint from being generated but this does not work. Can a mapping be defined that will force SchemaExport to not generate the constraint? 回答1: Figured

问题 Fluent NHibernate doesn't like this, throwing an error: {"Association references unmapped class: System.String"} OK fine, I can see why this would cause a problem - but what's the best solution? I don't really want it to store a delimited list of strings in a single field, this would get ugly if my list contains many strings. I also don't really want a table 'string', for obvious reasons. I guess I can solve this by wrapping my List<string> inside a class, but this feels a little heavyweight.