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Subject: RE: [wsia][wsrp-interfaces] Specific or general destroy mechanism (s)


The GDI calls.

It's not that I really care one way or another. I think in the end its a
question of style. But you are right about the GC.

Gil

-----Original Message-----
From: Carsten Leue [mailto:CLEUE@de.ibm.com]
Sent: Tue, July 23, 2002 16:14
To: Gil Tayar
Cc: wsia@lists.oasis-open.org; wsrp-interfaces@lists.oasis-open.org
Subject: RE: [wsia][wsrp-interfaces] Specific or general destroy
mechanism (s)



Hi Gil.

What API are you refering to? The general Win32 call to release handles is
a generic CloseHandle no matter if it is a process handle, file handle,
etc. Even the COM API has a generic Release call in the IUnknown interface.

I prefer the generic mechanism to release handles. Conceptually it does not
make any difference what type of handle/entity you release, so there is not
need for specific method. In addition it makes algorithms like garbage
collection, reference counters, etc much easier to implement as the can be
implemented in a generic way.


Best regards
Carsten Leue

-------
Dr. Carsten Leue
Dept.8288, IBM Laboratory B÷blingen , Germany
Tel.: +49-7031-16-4603, Fax: +49-7031-16-4401



|---------+---------------------------->
|         |           Gil Tayar        |
|         |           <Gil.Tayar@webcol|
|         |           lage.com>        |
|         |                            |
|         |           07/23/2002 01:37 |
|         |           PM               |
|---------+---------------------------->
 
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  |       Subject:  RE: [wsia][wsrp-interfaces] Specific or general destroy
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Well, MS tried the "general" approach in its Win16 API, and moved the
"specific" way in its Win32 API. I can certainly understand it - I always
prefer being specific.

-----Original Message-----
From: Rich Thompson [mailto:richt2@us.ibm.com]
Sent: Mon, July 22, 2002 17:14
To: wsrp-interfaces@lists.oasis-open.org; wsia@lists.oasis-open.org
Subject: [wsia][wsrp-interfaces] Specific or general destroy
mechanism(s)



The current draft spec has a generic release mechanism (releaseHandles()).
At times more specific mechanisms have been mentioned (deregisterConsumer()
& destroyEntities()).
Advantages/disadvantages I see for the generic mechanism are:

Advantages:
  - Single operation in the interface
  - Extensible ... can easily deal with new handle types as they are added
to the spec.
  -
Disadvantages:
  - Implies an inheritance relationship between handles. This isn't bad,
but isn't required for specific mechanisms.
  - Type checking moved to the application level (this depends on how we
specify the serialization of the handles).
  - Harder to explain as the operation is more abstract and therefore
dependent on what is concretely passed.
  -

Comments / thoughts / preferences?



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