In these cases I prefer to use WellKnownInstanceType

2009/12/14 rg <[email protected]>

> It depends. For some dictionaries I'm just using them to show a user-
> friendly name for a const (by joining status.name to the entity). This
> is especially important on lists where I can get this information from
> the database, without post-processing the data in code to add user
> friendly names for consts (and order by user friendly names). In other
> cases I'm allowing users to add their own values and keeping them in a
> table + CRUD GUI is the easiest option. And some consts are used in
> application logic in C# code - like in the example above. In all of
> these cases I'm using small  tables to store these dictionaries, this
> is because I prefer using one method consistently to having several
> variants used in different situations. Ah, and it makes the database
> more self-documenting and easy to understand - you know what all these
> constants mean by looking into the dictionary table.
> R
> On 14 Gru, 13:40, Fabio Maulo <[email protected]> wrote:
> > why you should use a table to represent constant ?
> > have you some "if" on the status ? (as : if( w.Status ==
> > WorkFkowStatus.Executing)...)
> >
> > 2009/12/13 rg <[email protected]>
> >
> >
> >
> >
> >
> > > Hi, I'm frequently using some short dictionary tables containing id/
> > > name columns, for example to represent possible statuses of a simple
> > > workflow. Such table contains few values, like:
> >
> > > 1, Creating
> > > 2, Accepting
> > > 3, Executing
> > > 4, Finished
> > > 5, Cancelled
> >
> > > and is referred by an entity representing some business object -  so
> > > by joining it I can display current status of the object. My question
> > > is, how to represent such constant references in C# code, so I could
> > > write something like:
> >
> > > r = new SomeBusinessCase()
> > > r.CreatedDate = DateTime.Now;
> > > r.Status = WorkflowStatus.Accepting; //this should be resolved as
> > > Session.Load<WorkflowStatus>(2);
> >
> > > As you see, having aliases for constant key references would help keep
> > > the code clean. If such 'consts' were understood by NHibernate, this
> > > could also be used in HQL - like "from SomeBusinessCase where Status
> > > == WorkflowStatus.Executing". Is there something like that in NH, or
> > > what is the best way to achieve something similar?
> >
> > > Best regards
> > > RG
> >
> > > --
> >
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> > --
> > Fabio Maulo
>
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