Eclipse Community Forums: EMF » [cdo] Using RecordingCommands and CDO

Help

Home

Home » Modeling » EMF » [cdo] Using RecordingCommands and CDO

Show: Today's Messages :: Show Polls :: Message Navigator

[cdo] Using RecordingCommands and CDO [message #426469]

Wed, 07 January 2009 14:23

Anders Forsell

Messages: 127
Registered: July 2009

Senior Member

I have heard that using EMF transactions and CDO can cause some
problems. Since RecordingCommands are so much easier to work with than
EMF Commands I would like to use them instead.

Anyone with experiences in doing this with CDO 2.0 ?

---
Anders

Report message to a moderator

Re: [cdo] Using RecordingCommands and CDO [message #426471 is a reply to message #426469]

Wed, 07 January 2009 15:26

Ed Merks

Messages: 33137
Registered: July 2009

Senior Member

Anders,

Note that EMF.Edit directly has a ChangeCommand as well for the exactly
same purpose, but without transactional dependencies. I.e., you just
need to be clear when you create the command which objects should be
monitored for changes, and then you can work directly with those objects
without use of fine grained commands and still have undo support...

Anders Forsell wrote:
> I have heard that using EMF transactions and CDO can cause some
> problems. Since RecordingCommands are so much easier to work with than
> EMF Commands I would like to use them instead.
>
> Anyone with experiences in doing this with CDO 2.0 ?
>
> ---
> Anders

Ed Merks
Professional Support: https://www.macromodeling.com/

Report message to a moderator

Re: [cdo] Using RecordingCommands and CDO [message #426479 is a reply to message #426469]

Wed, 07 January 2009 19:55

Eike Stepper

Messages: 6682
Registered: July 2009

Senior Member

Anders,

I'm not sure if the term RecordingCommands corresponds to a concrete
technology and if so, I suspect that I have no experience with it. CDO
has its own kind of delta model for tracking model changes. It is
queriable through public API (CDORevisionDelta) but so far we do not
have any support of undoing single changes. If this is what you are
looking for I think it would make a reasonable feature request.
Currently I can not predict how much effort it would cause us or which
priority we would denote to it, but please feel free to file a Bugzilla
so that we do not forget about it.

Cheers
/Eike

----
http://thegordian.blogspot.com

Anders Forsell schrieb:
> I have heard that using EMF transactions and CDO can cause some
> problems. Since RecordingCommands are so much easier to work with than
> EMF Commands I would like to use them instead.
>
> Anyone with experiences in doing this with CDO 2.0 ?
>
> ---
> Anders

Cheers
/Eike

----
http://www.esc-net.de
http://thegordian.blogspot.com
http://twitter.com/eikestepper

Report message to a moderator

Re: [cdo] Using RecordingCommands and CDO [message #426484 is a reply to message #426471]

Wed, 07 January 2009 21:39

Anders Forsell

Messages: 127
Registered: July 2009

Senior Member

Oh, I wasn't aware of the EMF.Edit ChangeCommand.
I'll definitely try that.

Thanks Ed!

---
Anders

Ed Merks wrote:
> Anders,
>
> Note that EMF.Edit directly has a ChangeCommand as well for the exactly
> same purpose, but without transactional dependencies. I.e., you just
> need to be clear when you create the command which objects should be
> monitored for changes, and then you can work directly with those objects
> without use of fine grained commands and still have undo support...
>
>
> Anders Forsell wrote:
>> I have heard that using EMF transactions and CDO can cause some
>> problems. Since RecordingCommands are so much easier to work with than
>> EMF Commands I would like to use them instead.
>>
>> Anyone with experiences in doing this with CDO 2.0 ?
>>
>> ---
>> Anders

Report message to a moderator

Previous Topic:	[CDO] CDO2.0 and Eclipse 3.5 using p2
Next Topic:	UnRegistered Package Predicament

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

]

Current Time: Sat Apr 20 04:01:22 GMT 2024

.:: Contact :: Home ::.

Breadcrumbs

Sign up to our Newsletter