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GMF and private fields without getters [message #201215]

Fri, 08 August 2008 11:09

Eclipse User

Hi

This question is probably for GMF contributors: why so many GMF classes,
which can be overridden by clients, store values passed to constructors
in private fields without getters? When I override such class I have to
create my own duplicates.

Greetings,
Seweryn

Re: GMF and private fields without getters [message #201326 is a reply to message #201215]

Mon, 11 August 2008 05:07

Eclipse User

Hello Seweryn,

Can you post here examples of such classes + attributes?
These cases definitely should be fixed...

-----------------
Alex Shatalin

Re: GMF and private fields without getters [message #201594 is a reply to message #201326]

Tue, 12 August 2008 08:26

Eclipse User

Alex Shatalin wrote:
> Hello Seweryn,
>
> Can you post here examples of such classes + attributes? These cases
> definitely should be fixed...

Unfortunately I'm currently cut off from my source code (vacation) but
AFAIR RepositionEObjectCommand is such class.

Greetings,
Seweryn

Re: GMF and private fields without getters [message #201697 is a reply to message #201594]

Wed, 13 August 2008 03:36

Eclipse User

Hello Seweryn,

> AFAIR RepositionEObjectCommand is such class.
Wich particular attributes of RepositionEObjectCommand you should be able
to get/set?

-----------------
Alex Shatalin

Re: GMF and private fields without getters [message #201821 is a reply to message #201594]

Wed, 13 August 2008 08:30

Eclipse User

Originally posted by: cdamus.zeligsoft.com

Hi, Seweryn,

Perhaps some of these classes weren't intended to be extended by
subclassing, despite that the documentation doesn't indicate thus?

In any case, extension by composition rather than inheritance may work
especially well for commands. Indeed, the EditHelper framework
basically builds that pattern in via the contribution of advising
commands. There is also the possibility of replacing the core command
using the instead-command facility.

I expect that you have already considered all of this ... :-)

Cheers,

Christian

Seweryn Niemiec wrote:
> Alex Shatalin wrote:
>> Hello Seweryn,
>>
>> Can you post here examples of such classes + attributes? These cases
>> definitely should be fixed...
>
> Unfortunately I'm currently cut off from my source code (vacation) but
> AFAIR RepositionEObjectCommand is such class.
>
> Greetings,
> Seweryn

Re: GMF and private fields without getters [message #202910 is a reply to message #201697]

Thu, 21 August 2008 11:22

Eclipse User

Alex Shatalin wrote:
> Hello Seweryn,
>
>> AFAIR RepositionEObjectCommand is such class.
> Wich particular attributes of RepositionEObjectCommand you should be
> able to get/set?

displacement :)

--
Greetings
Seweryn

Re: GMF and private fields without getters [message #202938 is a reply to message #202910]

Thu, 21 August 2008 13:18

Eclipse User

Hello Seweryn,

Loos like you should pass this argument as a parameter.... No need to change
it.

-----------------
Alex Shatalin

Re: GMF and private fields without getters [message #203952 is a reply to message #202938]

Mon, 01 September 2008 02:52

Eclipse User

Alex Shatalin wrote:
> Hello Seweryn,
>
> Loos like you should pass this argument as a parameter.... No need to
> change it.

This argument is passed as a parameter to the constructor. I override
this constructor and call super to set up the fields, but later in
doExecute...() I can't get them.

The same problem is with AddCommand.

--
Greetings,
Seweryn

Re: GMF and private fields without getters [message #205122 is a reply to message #203952]

Wed, 10 September 2008 10:54

Eclipse User

Hello Seweryn,

If you need this field value then it's reasonable to have protected accessor
method for it (getDisplacement()). I think i make sense to submit a request
to change this class(es).
For now you can just create one more private field "displacement" in your
subclass, assign proper value to it in a constructor and use it in doExecute..
method.

-----------------
Alex Shatalin

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