There's already some optional specs in Java EE 8, we could remove them in Jakarta EE 9 and then not have to worry about moving them to jakarta.*.
We could also consider pruning some other specs by making them proposed optional in Jakarta EE 9 and making them optional and possibly removing them in Jakarta EE 10. Such specs might not need to be moved to jakarta.*.
I think this is why the Big Bang proposal says "some or all" will be moved to jakarta.*; it allows us to leave behind specs that we plan to abandon.
But we haven't decided what our pruning or removal policy will be for Jakarta EE releases so this may be premature.
Steve,
> Are you really suggesting that after all this time that we actually don’t want to change the apis that we’ve just spent two years moving to the Eclipse Foundation?
Not at all. I'm just being pragmatic. It's very easy to talk about all of the desired changes. It's another to get the community fired up to actually architect, develop, test, and document all
of the changes. An incremental approach would allow the more gradual (I'd say natural) migration from javax to jakarta. It also allows us to better determine which Specs are not active and maybe candidates for stabilization or deprecation or even removal.
---------------------------------------------------
Kevin Sutter
STSM, MicroProfile and Jakarta EE architect
e-mail: sutter@xxxxxxxxxx Twitter: @kwsutter
phone: tl-553-3620 (office), 507-253-3620 (office)
LinkedIn: https://www.linkedin.com/in/kevinwsutter
From: "Steve Millidge (Payara)"
<steve.millidge@xxxxxxxxxxx>
To: jakartaee-platform developer discussions
<jakartaee-platform-dev@xxxxxxxxxxx>
Date: 06/05/2019 03:23 PM
Subject: [EXTERNAL] Re: [jakartaee-platform-dev] Transitioning Jakarta EE to the jakarta namespace
Sent by: jakartaee-platform-dev-bounces@xxxxxxxxxxx
I’m not aware of any list. The linked document is Arjan’s view of what he wants to see. I’m sure others would have other ideas. I for one would want to see evolution of CDI, JBatch, JPA and JMS and maybe even EJB which weren’t on the list.
Now that APIs have been moved to the Eclipse Foundation whether an api evolves or not is up to the open source project and the corresponding community. However I firmly believe that for all the mainstream heavily used Java EE 8 apis there is a desire out there
to see them evolve.
Are you really suggesting that after all this time that we actually don’t want to change the apis that we’ve just spent two years moving to the Eclipse Foundation?
Steve
From:jakartaee-platform-dev-bounces@xxxxxxxxxxx
<jakartaee-platform-dev-bounces@xxxxxxxxxxx>
On Behalf Of John Clingan
Sent: 05 June 2019 20:54
To: jakartaee-platform developer discussions
<jakartaee-platform-dev@xxxxxxxxxxx>
Subject: Re: [jakartaee-platform-dev] Transitioning Jakarta EE to the jakarta namespace
BTW, I should mention that my comment was general in nature and not targeted specifically at Bill’s comment. I just wanted to insert my thought somewhere and that seemed as good a place as any :-)
@Steve, you mentioned "we believe a majority of APIs need to evolve”. Does a list exist of which APIs plan to evolve and in what timeframe? I think the only list I’ve seen is here:
https://www.eclipse.org/community/eclipse_newsletter/2019/february/Jakarta_EE_9.php
On Jun 5, 2019, at 11:47 AM, Kevin Sutter <sutter@xxxxxxxxxx> wrote:
+1, John. We can start incrementally and move to big bang later. We can't do the reverse.
---------------------------------------------------
Kevin Sutter
STSM, MicroProfile and Jakarta EE architect
e-mail: sutter@xxxxxxxxxx Twitter: @kwsutter
phone: tl-553-3620 (office), 507-253-3620 (office)
LinkedIn: https://www.linkedin.com/in/kevinwsutter
From: John Clingan <jclingan@xxxxxxxxxx>
To: jakartaee-platform developer discussions <jakartaee-platform-dev@xxxxxxxxxxx>
Date: 06/05/2019 12:55 PM
Subject: [EXTERNAL] Re: [jakartaee-platform-dev] Transitioning Jakarta EE to the jakarta namespace
Sent by: jakartaee-platform-dev-bounces@xxxxxxxxxxx
I’ve been pretty quiet up to this point, following the discussion. Early on was I was for “big bang” for various reasons already outlined in other comments. What I find increasingly concerning, the more I think about it, we are guessing/making assumptions as
to the impact of a decision.
“We don’t know what we don’t know”, IMHO. Making a big-bang change is a big step that could have unforeseen consequences to the ecosystem and the user base. We are a small group discussing the namespace issue that is trying to represent a developer base of
probably 1M managing potentially millions deployed apps based on these specs. A more conservative approach would be to do an incremental update, measure the impact and learn some things along the way, and then decide if further incremental steps are required
or if we can simply move the remainder.
On Jun 5, 2019, at 9:20 AM, Bill Shannon <bill.shannon@xxxxxxxxxx> wrote:
Oracle agrees that Big Bang is best.
Steve Millidge (Payara) wrote on 6/5/19 9:12 AM:
Just to add Payara favours a big bang approach as described in https://github.com/eclipse-ee4j/jakartaee-platform/blob/master/namespace/proposal-01-bigbang.adocwe
believe a majority of APIs need to evolve and therefore a majority of apis will eventually move to the Jakarta namespace so may as well do it now.
From: jakartaee-platform-dev-bounces@xxxxxxxxxxx<jakartaee-platform-dev-bounces@xxxxxxxxxxx>On
Behalf Of Scott Stark
Sent: 05 June 2019 16:59
To: jakartaee-platform developer discussions
<jakartaee-platform-dev@xxxxxxxxxxx>
Subject: Re: [jakartaee-platform-dev] Transitioning Jakarta EE to the jakarta namespace
There has been no decision and there continues to be uncertainty as to the best approach. Vendors seem to favor an incremental approach as there is a belief that it eases backward compatibility stories. Developers seem to favor getting the move over with. I
think the current plan is to talk about a plan toward a decision on the upcoming June 12 community call.
On Jun 5, 2019, at 4:19 AM, reza_rahman <reza_rahman@xxxxxxxxx> wrote:
Has a definitive decision on this been reached already? If not, when will it be reached? If a decision has been reached, can the community have visibility into how each of the stakeholders voted on this issue and why?
I looked at the recent meeting minutes and it is very unclear to me if a vote was held and what the rationale from each decision maker was. In particular I would personally like to understand how community input was weighted.
I am still hoping we can all celebrate together soon with the right forward looking and community focused decision being made by stakeholders.
Reza Rahman
Principal Program Manager
Java on Azure
Please note that views here are my own as an individual community member and do not represent the views of my employer.
Sent via the Samsung Galaxy S7, an AT&T 4G LTE smartphone
-------- Original message --------
From: David Blevins <dblevins@xxxxxxxxxxxxx>
Date: 5/6/19 7:23 PM (GMT-05:00)
To: jakartaee-platform-dev@xxxxxxxxxxx
Subject: [jakartaee-platform-dev] Transitioning Jakarta EE to the jakarta namespace
[Contents of this email represent discussions of the Jakarta EE Specification Committee over the last several meetings. The statements here have been reviewed by and represent the voice of the Jakarta EE Specification Committee]
As announced in the Update on Jakarta EE Rights to Java Trademarks[1] post on Friday, future modification of the
javaxnamespace will not be allowed. While this is not what was envisioned when Jakarta EE started, in many ways this in our best interest as the modification
of javaxwould always have involved long-term legal and trademark restrictions.
To evolve Jakarta EE, we must transition to a new namespace. The primary decisions we need to make as a community and industry are how and when. Given all delays and desires on everyone’s part to move forward as fast as possible, we would like to have this
discussion openly as a community and conclude in one month. It is the hope that in one month a clear consensus emerges and can be presented to the Specification Committee for final approval.
In an effort to bootstrap the conversation, the Specification Committee has prepared two proposals for how we might move into the new namespace. These should be considered a starting point, more proposals are welcome. No final decisions have been made at this
stage.
The guiding principle for Jakarta EE.next will be to maximize compatibility with Jakarta EE 8 for future versions without stifling innovation.
Other proposals should incorporate the following considerations and goals:
·
The new namespace will be
jakarta.*
·
APIs moved to the jakarta namespace maintain class names and method signatures compatible with equivalent class names and method signatures in the javax.* namespace.
·
Even a small maintenance change to an API would require a
javaxto
jakartachange of that entire specification. Examples include:
o Adding a value to an enum
o Overriding/adding a method signature
o Adding default methods in interfaces
o Compensating for Java language changes
·
Binary compatibility for existing applications in the
javaxnamespace is an agreed goal by the majority of existing vendors in the Jakarta EE Working Group and would be a priority in their products. However,
there is a strong desire not to deter new implementers of the jakartanamespace from entering the ecosystem by requiring they also implement an equivalent
javaxlegacy API.
·
There is no intention to change Jakarta EE 8 goals or timeline.
·
Community discussion on how to transition to the
jakartanamespace will conclude
Sunday, June 9th, 2019.
It is envisioned binary compatibility can be achieved and offered by implementations via tooling that performs bytecode modification at either build-time, deploy-time or runtime. While there are open questions and considerations in this area, the primary goal
of the discussion that must conclude is how do we move forward with future modifications to the APIs themselves.
Proposal 1: Big-bang Jakarta EE 9, Jakarta EE 10 New Features
The heart of this proposal is to do a one-time move of API source from the
javaxnamespace to the
jakartanamespace with the primary goal of not prolonging industry cost and pain associated with the transition.
Were we to take this path, a compelling approach would be to do the namespace rename and immediately release this as Jakarta EE 9. Additional modifications would be put into a Jakarta EE 10 which can be developed in parallel, without further delays.
·
Some or all Jakarta EE APIs under
javaxwould move immediately into
jakartaas-is.
·
Any packages not moved from
javaxto
jakartacould be included in Jakarta EE, but would be
foreverfrozen and never move to the jakartanamespace.
·
Jakarta EE 9 would be refocused as quick, stepping-stone release, identical to Jakarta EE 8 with the exception of the
javaxto
jakartanamespace change and immediately released.
·
Jakarta EE 10 would become the new release name for what we imagined as Jakarta EE.next with only minor impact on timeline.
·
Work on Jakarta EE 10 could start immediately after rename is completed in the GitHub source and need not wait for the Jakarta EE 9 release to actually ship.
Pros:
·
One-time coordination and cost to the industry, including; conversion tools, users, enterprises, cloud vendors, IDE creators, platform vendors, trainers and book authors.
·
Easily understood rule: everything Jakarta EE 8 and before is
javax, Jakarta EE 9 and after is
jakarta
·
Consistent with the
javaxto
jakartaMaven groupId change.
·
Highest degree of flexibility and freedom of action, post-change.
·
Industry would have the opportunity to begin digesting the namespace change far in advance of any major new APIs or feature changes.
Cons:
·
Largest upfront cost for
everyone.
·
Specifications that may never be updated would still likely be moved.
·
Decision to not move a specification is permanent and therefore requires high confidence.
Decisions:
·
Which specifications, if any, would we opt not to move?
·
Would we take the opportunity to prune specifications from Jakarta EE 9?
·
Do we change the language level in Jakarta EE 9 to Java SE 11 or delay that to Jakarta EE 10?
Proposal 2: Incremental Change in Jakarta EE 9 and beyond
Evolve API source from javaxto the
jakartanamespace over time on an as-needed basis. The most active specifications would immediately move in Jakarta EE 9. Every Jakarta EE release, starting
with version 10 and beyond may involve some javaxto
jakartanamespace transition.
·
The most active APIs would immediately move from
javaxto
jakarta
·
APIs not changed or determined by the community to be unlikely to change would stay in
javax
·
Jakarta EE 9 would be a mix of
javaxand
jakartapackaged APIs
·
If a change was needed to a
javaxAPI post Jakarta EE 9 for any reason, that API would transition fromjavaxto
jakarta.
·
Jakarta EE 10 would be a mix of
javaxand
jakartapackaged APIs, but a different mix than Jakarta EE 9.
·
At some point down the road, Jakarta EE xx, it may be decided that the migration from
javaxto
jakartais “done” and the final APIs are moved.
Pros:
·
Cheaper up front cost and reduced immediate noise.
·
No need to move specifications unless there is an immediately visible benefit.
·
Potential for less impact from API change overall.
Cons:
·
Prolonged coordination, cost and complexity to industry affecting conversion tools, users, enterprises, cloud vendors, IDE creators, platform vendors, trainers and book authors.
·
Use of restricted
javaxnamespace prolonged.
·
Frustration of “always changing” packages may deter application developers and become a permanent perception of the brand.
·
Difficulty in remembering/knowing which Jakarta EE release an API was moved. “Is Connector
javaxorjakartain Jakarta EE 11?”
·
Difficulty in keeping the industry in sync.
·
New implementations may find themselves having to deal with the
javaxto
jakartatransition, unable to avoid legacy costs and therefore decide not to enter the space.
·
Transitive dependencies to other specifications may make incremental change difficult or impossible.
·
Restrictions on what Java SE implementation can be used for certification
Decisions:
·
Do we start small or start large?
·
Which APIs would immediately need to be changed?
Out of Scope
The following are very important community discussions, but do not require a decision in the time-frame allotted:
·
Roadmap or release date for any Jakarta EE.next that would contain new features
·
List of specifications that may be deprecated, pruned or removed from Jakarta EE.next, if any
·
Specification text around backwards compatibility requirements, if any
·
What profiles should be defined
However, depending on the path chosen, some of these topics may require immediate resolution before the chosen path can be executed.
[1] https://eclipse-foundation.blog/2019/05/03/jakarta-ee-java-trademarks/
--
David Blevins
http://twitter.com/dblevins
http://www.tomitribe.com
310-633-3852
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