namespace problem

[Steven Wolf]

hi again,

i have several namespacing problems in my big project.

my current namespaces in my solution are:

b2b.Server.Common
b2b.Server.Business
b2b.Server.Business.Mapping
b2b.Server.Business.Entities
b2b.Server.Database

now i have a testing app and i include all of those namespaces in that
app.
Server.Business.Mapping.Facility facility = new
Server.Business.Mapping();

works, but:

Business.Mapping.Facility facility...

or

Mapping.Facility facility...

doesnt work!! of course i have references to those librarys because i
can find them when i begin from Server... but not when i beging from
Business.. why?!
i never had those problems in VB.NET, only in c#..

thanks
Steve.

[Jon Skeet [C# MVP]]

Steven Wolf <ap****@gmx.net> wrote:

i have several namespacing problems in my big project.

my current namespaces in my solution are:

b2b.Server.Common
b2b.Server.Business
b2b.Server.Business.Mapping
b2b.Server.Business.Entities
b2b.Server.Database

now i have a testing app and i include all of those namespaces in that
app.
Server.Business.Mapping.Facility facility = new
Server.Business.Mapping();
Hang on - is Mapping a class as well as a namespace, or did you mean to
write new Server.Business.Mapping.Facility()?
works, but:

Business.Mapping.Facility facility...

or

Mapping.Facility facility...

doesnt work!! of course i have references to those librarys because i
can find them when i begin from Server... but not when i beging from
Business.. why?!
Because namespaces aren't treated in that way in C# - types in the
hierarchy "above" the declaring namespace are automatically included,
but the declaring namespace doesn't become a sort of "root".

Fortunately, with using declarations it shouldn't be a problem - just
declare

using Server.Business.Mapping;

at the top of your class.
i never had those problems in VB.NET, only in c#..

Indeed, C# doesn't treat namespaces in quite the same way as VB.NET.

--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too

[Steven Wolf]

Hi Jon

Hang on - is Mapping a class as well as a namespace, or did you mean to
write new Server.Business.Mapping.Facility()?
No, Mapping is a namespace of b2b.Server.Business and Facility is a
class there.

I map there DataTables to my domain objects.


Fortunately, with using declarations it shouldn't be a problem - just
declare

using Server.Business.Mapping;

at the top of your class.

Well, the problem is, i have also a Facility class in
Server.Business.Entities, so i must use for example

Entities.Facility facility = new Entities.Facility();
Mapping.Facility facilityMapper = new Mapping.Facility();

and so on. but with declaring "using b2b.Server.Business", those both
namespaces (Entities and Mapping) don't appear..

Steve.

[Jon Skeet [C# MVP]]

Steven Wolf <ap****@gmx.net> wrote:

Hang on - is Mapping a class as well as a namespace, or did you mean to
write new Server.Business.Mapping.Facility()?

No, Mapping is a namespace of b2b.Server.Business and Facility is a
class there.

I map there DataTables to my domain objects.

So you did mean to write new Server.Business.Mapping.Facility, right?

Fortunately, with using declarations it shouldn't be a problem - just
declare

using Server.Business.Mapping;

at the top of your class.

Well, the problem is, i have also a Facility class in
Server.Business.Entities, so i must use for example

Entities.Facility facility = new Entities.Facility();
Mapping.Facility facilityMapper = new Mapping.Facility();

and so on. but with declaring "using b2b.Server.Business", those both
namespaces (Entities and Mapping) don't appear..

You could write

using EntitiesFacility = b2b.Server.Business.Entities.Facility;
using MappingFacility = b2b.Server.Business.Mapping.Facility;

and then use "EntitiesFacility" and "MappingFacility" everywhere.

To be honest, I'd just change one set of class names - using the same
classnames in two different namespaces which are both likely to be used
in the same class is just asking for confusion.

--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too

[Steven Wolf]

>

So you did mean to write new Server.Business.Mapping.Facility, right?

yes, exactly.

You could write

using EntitiesFacility = b2b.Server.Business.Entities.Facility;
using MappingFacility = b2b.Server.Business.Mapping.Facility;

and then use "EntitiesFacility" and "MappingFacility" everywhere.
wow, i never heard of that possibility, and thats exactly what i need,
thanks!

To be honest, I'd just change one set of class names - using the same
classnames in two different namespaces which are both likely to be used
in the same class is just asking for confusion.

yes, you are right, but i tried to keep the same mapper-class name as
the entity to map. I have also a b2b.Server.Database.Facility class,
it is similar to the datatable and represent a persistence object.

when i create an instance of them, i use faciltiyTable,
facilityEntity, facilityMapper and so on....

but anyway,
thank you for support.

Steven.

[Jon Skeet [C# MVP]]

Steven Wolf <ap****@gmx.net> wrote:

You could write

using EntitiesFacility = b2b.Server.Business.Entities.Facility;
using MappingFacility = b2b.Server.Business.Mapping.Facility;

and then use "EntitiesFacility" and "MappingFacility" everywhere.

wow, i never heard of that possibility, and thats exactly what i need,
thanks!

Goodo.

To be honest, I'd just change one set of class names - using the same
classnames in two different namespaces which are both likely to be used
in the same class is just asking for confusion.

yes, you are right, but i tried to keep the same mapper-class name as
the entity to map. I have also a b2b.Server.Database.Facility class,
it is similar to the datatable and represent a persistence object.

when i create an instance of them, i use faciltiyTable,
facilityEntity, facilityMapper and so on....

Hmm... I still think you're liable to make things more confusing than
they need to be, but that's your choice - at least now you know how you
can do it!

--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too