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From Rick McGuire <>
Subject Re: [DISCUSS] Proposal to make the Yoko ORB a subproject of Geronimo.
Date Thu, 06 Dec 2007 16:25:31 GMT
I personally think we should go the local build route.  Until the 
subproject's been integrated in Geronimo, it's still bound by the 
incubating release rules.  I suspect getting a 1.0 release actually 
approved and out the door in time for 2.1 given the current state of the 
community is not something we'd want to depend on.  The local build like 
we used for 2.0 is probably the best approach at this date.


Joe Bohn wrote:
> A related question.
> We currently have a dependency in Geronimo 2.1 on Yoko 
> 1.0-incubating-SNAPSHOT.  We need to eliminate that snapshot 
> dependency (and several others) before we can ship Geronimo 2.1.
> Assuming that active VOTE passes .... would is the possibility of 
> releasing a 1.0 version of Yoko in time for Geronimo 2.1?
> I was just looking at the possibility of creating another local build 
> for the Geronimo release but I think we could have an official release 
> of Yoko in Geronimo if it becomes subproject of Geronimo.  Does that 
> sound feasible or should we create a private build for Geronimo 2.1?
> Joe
> Rick McGuire wrote:
>> Below is a proposal that Matt Hogstrom, one of the mentors of the 
>> Yoko project, has put forward for moving on with the Yoko project.  
>> In a nutshell, the Yoko community has basically decided there is not 
>> a lot of continuing interesting in moving this project forward.  This 
>> decision does have a major impact on Geronimo, as Geronimo uses the 
>> Yoko ORB was a key element to allow Geronimo 1.2 to support both the 
>> 1.4 and 1.5 JVMs, and also was a necessary element for achieving 
>> j2ee5 certification.  The Yoko ORB gives Geronimo cross JVM 
>> portability which was not available before.  At the current time, 
>> there's probably no suitable replacement that has all of the 
>> advantages that the Yoko ORB provides.
>> In a nutshell, Matt's proposal is for the core ORB elements of the 
>> Yoko project become a subproject of the Geronimo project.  These are 
>> the pieces of Yoko that Geronimo has a dependency upon.  These are 
>> essentially the org.omg.* clases, the javax.rmi.* classes, plus the 
>> implementation classes backing those spec interfaces.  Along with the 
>> subproject, there are 6 committers who have expressed interest in 
>> continuing to work on the core ORB code.  3 of the interested 
>> commiters are already Geronimo committers.  Matt's proposal would 
>> grant the remaining 3 Geronimo committer status as well.
>> There's one important caveat in assuming owership of this package.  
>> The core ORB is also used by the Harmony project to add CORBA and RMI 
>> support to the Harmony JVM.  Included with assuming ownership of the 
>> package would be a commitment to keep the core ORB a "standalone" 
>> component.  This means not adding direct dependencies on Geronimo and 
>> keeping dependencies on other packages to a minimum.
>> This code is fairly stable now, and has already passed certification 
>> on multiple JVM instances, so I don't expect there will be a lot of 
>> overhead in supporting this.  The bulk of the recent work to get this 
>> to pass certification have been done by Geronimo committers, so 
>> Geronimo is probably the most appropriate new home for this code.
>> Anyway, this needs to have some discussion and be put to a vote.  
>> Below is the proposal that Matt posted to the Yoko dev mailing list 
>> about this move.  The Yoko community seems very much in agreement 
>> that project does not have sufficient momentum to graduate from the 
>> incubator.
>> Rick
>> The members of project yoko have been considering the future of Yoko 
>> as a project.  There have been several milestones delivered and the 
>> project is used by other ASF projects.   The project is not as active 
>> as other ASF projects and it makes sense to move the code from Yoko 
>> to other projects.  The Yoko team has the following proposal for your 
>> consideration.
>> Proposed Code Donation from Project Yoko to Apache CXF and Apache 
>> Geronimo
>> The Yoko community has been successful in delivering several 
>> milestones of the ORB implementation while in the Apache Incubator.  
>> These milestones are used by other Apache projects (namely Geronimo 
>> and Harmony) to support their releases.  The WebServices bindings are 
>> dependent on CXF.  The Yoko community has decided that the Yoko 
>> project does not have quite the momentum to carry itself as an 
>> independent project but has sufficient value for other projects for 
>> them to consider receiving the code and committers for that code-base 
>> as sub-projects.  Since the code under consideration is used by 
>> Apache Geronimo, Apache CXF and Apache Harmony the movement of the 
>> code should continue to allow for independent releases so the code 
>> can be easily shared with other dependent projects.
>> The proposed division is:
>> yoko-spec-corba - this is the org.omg interface classes.
>> rmi-spec - this is the javax.rmi spec implementation
>> core - This is the actual ORB implementation.
>> rmi-impl - This is the implementation of the RMIIIOP support.
>> These modules are also used by Harmony.
>> In addition to the code we propose that the following committers in 
>> Apache Yoko be accepted as committers in Apache Geronimo given their 
>> demonstration of delivering code, creating releases and functioning 
>> as a community.  Those noted with asterisks are already Geronimo 
>> committers.
>> Continued involvement with the core:
>> Rick McGuire *
>> David Jencks *
>> Alan Cabrera  *
>> Lars Kuhne
>> Alexey Petrenko
>> Darren Middleman
>> The remainder of the modules in Yoko are part of the webservices 
>> support and are independent of the underlying ORB implementation.
>> api -- interface classes used for the web services support.
>> bindings -- code to implement the CORBA-Web services bindings.
>> tools -- tools for generation WSDL and IDL for the bindings
>> maven-plugin -- some maven plugins that can use the tools for 
>> generating binding-related build artifacts.  None of the maven-plugin 
>> code is used by the ORB.
>> There is also a distribution directory with some sample 
>> applications.  One set of samples demonstrates using the core ORB, 
>> the other set is for WebServices.  We recommend that the distribution 
>> directory should move to Apache CXF as the webservices examples use 
>> the orb samples to bind them as web services.  Since Apache 
>> Geronimo's only use of CORBA is for exporting EJBs, these samples are 
>> not particularly valuable for Geronimo.
>> The Yoko community did not have any committers that expressed an 
>> interest in continuing work on these bindings.  As such, only the 
>> code would be moving to apache CXF.

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