[jboss-dev] AS 5.1 and JBoss Messaging 2

[Tim Fox]

Resending

Tim Fox wrote:
> Jason T. Greene wrote:
>> Well, as an example, we have multiple server dirs, but only one 
>> client dir, and everything in there is part of the same classloader. 
>> So, will an app writen against the 1.4 API work with the 2.0 API jar?
>>
>> Is there any client specific code in 1.4 and 2.0 that shares the same 
>> packages (if so that will be a conflict)?
> No
>>
>> Is the MDB implementation in EJB3 compatible with both 1.4 and 2.0?
>>
>> Do the dependency sets conflict between 1.4 and 2.0 (i.e. different 
>> jgroups requirements etc)?
> We don't have any shared dependencies with 1.4. In fact JBM 2.0 core 
> has zero dependencies other than JDK classes :)
>>
>> Is the JMX API in 2.0 BC with 1.4?
> No, but there is no requirement for compatible on major releases. 
> That's why we're not replacing default JMS provider in a minor release 
> of AS, since it would break compatibility.
>>
>> Andy Taylor wrote:
>>> Jesper has already developed JCA resource adapter for JBM 2.0, Is 
>>> there anything apart from that we would need?
>>>
>>> Jason T. Greene wrote:
>>>> Yeah thats a good point. Andy how are you guys planning on handling 
>>>> AS components which are developed agains the JBM 1.4 API being 
>>>> compatible with the JBM2 API. Were you going to add some kind of 
>>>> compatibility layer?
>>>>
>>>> Dimitris Andreadis wrote:
>>>>> This is an other option, however, it has other implications in how 
>>>>> this get included. You'll have to import 2 different version of 
>>>>> the same component (and possibly other dependencies).
>>>>>
>>>>> Not sure how our existing build system would support this.
>>>>>
>>>>> Jason T. Greene wrote:
>>>>>> Part of the problem is that EAP is planning on including a JBM2 
>>>>>> profile / option. IMO it would be very weird to ship something in 
>>>>>> EAP but not in AS. Besides creating a profile, another option we 
>>>>>> have is to include JBM2 with an install script in docs/examples. 
>>>>>> Then someone could switch any AS profile to JBM2.
>>>>>>
>>>>>> Dimitris Andreadis wrote:
>>>>>>> We have enough configurations so far, so I don't think it's a 
>>>>>>> good idea adding any new ones until we come up with with a way 
>>>>>>> to share most of the jars/configuration.
>>>>>>>
>>>>>>> In your case it's better to offer the preview as a separate 
>>>>>>> download.
>>>>>>>
>>>>>>> Andy Taylor wrote:
>>>>>>>> As part of the AS 5.1 release we will be shipping JBM 2.0 as a 
>>>>>>>> technology preview. This will require 1 or more new profiles to 
>>>>>>>> be created. I have created a branch (Branch_5_x_JBM2) to use 
>>>>>>>> for now which i will merge in once JBM 2.0 is released and 
>>>>>>>> there is something concrete and working.
>>>>>>>>
>>>>>>>> What new profiles we need to add is open to discussion. We'll 
>>>>>>>> definitely need a copy of default as a start which could be 
>>>>>>>> called messaging-2. However, from a JBM2 point of view, it 
>>>>>>>> would be good to also demonstrate clustering which would mean a 
>>>>>>>> copy of all, say messaging-2-all, and since JBM2 can run with a 
>>>>>>>> minimal set of services maybe a messaging-2-minimal as well.
>>>>>>>>
>>>>>>>> I appreciate that adding all 3 might be too many new profiles 
>>>>>>>> to add so I'd like to hear peoples views!
>>>>>>>>
>>>>>>>> Andy Taylor Core Developer
>>>>>>>> JBoss Messaging
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>>>>>>
>>>>>>
>>>>
>>>>
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>>
>
>


-- 
Tim Fox
Messaging Lead
JBoss - a division of Red Hat

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