RE: [sca-bindings] ISSUE 5: JMS bindingType and atLeastOne intent overlapswith setting JMSDeliveryMode

Folks,

Thinking about this some more, I feel
that we should keep the JMSDeliveryMode in the schema.

If folks used to JMS are used to setting
this then it does not seem wise to invent something new

and strange for those folks.

The fact that there will be an error
if the delivery mode is non-persistent and one or more of the

reliable messaging intents is used is
not a problem, in my opinion.  At least they will be aware of a 

problem.

Yours,  Mike.

Strategist - Emerging Technologies, SCA & SDO.

Co Chair OASIS SCA Assembly TC.

IBM Hursley Park, Mail Point 146, Winchester, SO21 2JN, Great Britain.

Phone & FAX: +44-1962-818014    Mobile: +44-7802-467431  

Email:  

"Peshev, Peter"
<> 

10/01/2008 17:58

To

"Michael Rowley" <>,
<>

cc

Subject

RE: [sca-bindings] ISSUE 5: JMS bindingType
and atLeastOne intent overlaps with setting JMSDeliveryMode

Hi Michael,

In today's binding call we discussed the issue, and there was an idea to

resolve that issue by the original proposal (dropping the

JMSDeliveryMode from the schema) and relying entirely on intents.

(Probably new intent for non-persistent messages)

It seems that you preferred earlier (as in the mail below) to keep the

binding configuration possibilities, and define the conflict as an

error.

Would you agree to such a suggestion -- drop the JMSDeliveryMode ?

Best Regards

Peter 

-----Original Message-----

From: Michael Rowley [mailto:] 

Sent: Monday, 8. October 2007 18:22

To: 

Subject: RE: [sca-bindings] ISSUE 5: JMS bindingType and atLeastOne

intent overlaps with setting JMSDeliveryMode

I think this is a great issue.

I believe that the spec should say that if there is a conflict between
a

required intent and the semantics associated with a binding

configuration, then it should be a deployment error.  In the case
of the

JMS specification, specific potential conflicts, such as the one

described here, should be defined.

Michael

-----Original Message-----

From: Eric Johnson [mailto:] 

Sent: Friday, October 05, 2007 12:36 PM

To: 

Subject: [sca-bindings] ISSUE 5: JMS bindingType and atLeastOne intent

overlaps with setting JMSDeliveryMode

Logged as http://www.osoa.org/jira/browse/BINDINGS-5

Peshev, Peter wrote:

> TARGET:

> JMS Binding Specification Version 1.1, Working Draft  25 September

2007

>

>

> DESCRIPTION:

>

> The current bindingType of the jms is defined as :

>

> <bindingType type="binding.jms" alwaysProvides="jms"

> mayProvide="atLeastOnce atMostOnce ordered conversation"/>

>

> Not being at all policy expert and under the assumption that

> "mayProvide" is supposed to indicate - ("in some scenarios
when the

> binding is used, this may be  provided, the assembler by supplying

> intents can influence the runtime behavior of the binding"),
here is

the

> question :

>

> The semantics of atLeastOnce is actually having persistent messages

over

> a queue, and persistent messages + durable subscriptions over topic.

> If that can be configured by intents by the assembler, doesn't it

> overlap with the setting of JMSDeliveryMode in the schema of the JMS

> binding ? Which one wins in case of conflict ?

>

>

> PROPOSED SOLUTION

>  Drop JMSDeliveryMode from the schema

>

>

>

>   

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