Hi Andy!
When are you planning to start work on Jena3?
> Knowing there is some in-progress changes in various places, I wanted to
>confirm with everyone that now is good time, especially JENA-380.
I started to grok how to migrate JUnit3 tests to JUnit4, and have committed
some code to the JENA-380 branch. But it wouldn't be a problem to start from
scratch after Jena3 branch has been merged into master. It would probably take
a couple of weeks to have something that could be merged back into master.
If we postpone JENA-380, in the meantime I could:
a) observe the commit log and get used to the new project structureb) document
in the Jira issue (and/or site or Wiki) how the tests are being migrated (e.g.
remove old junit.framework.* imports when appropriate, replace TestSuite's by
@RunWith and @SuiteClasses, etc). So that if any test is broken later it is
easier to understand what might have happened
c) update the JENA-632 branch code
d) learn more about Claude's junit-contracts project
e) help testing parts of the code migrated?
What do you think?
Bruno
From: Andy Seaborne <a...@apache.org>
To: dev@jena.apache.org
Sent: Wednesday, April 22, 2015 4:28 AM
Subject: Start Jena3
Jena 2.13.0 has been out for out for a few weeks now and nothing too bad
has happened (yet ... :-).
So let's start Jena3!
Summary:
Please +1 if the process and timescale below works for you.
(If I don't hear to the contrary I'll start the process later this week.)
-------------------------------
Knowing there is some in-progress changes in various places, I wanted to
confirm with everyone that now is good time, especially JENA-380.
If the timescale is inconvenient, do say so now.
The timescale isn't driven by external needs so it's flexible.
Proposed detailed process for the first steps.
A/ Tag master with "jena-2-3-split"
B/ Create remote branch jena3
Create remote branch jena2
Branch "jena3" is short-term, just to get the first steps sorted out and
reviewed, i.e. preparation for (1). It quickly becomes "master".
C/ Do step 3 : Rename com.hp.hpl.jena packages to org.apache.jena
That is, package trees:
jena-sdb/src/test/java/com/hp/hpl/jena
jena-sdb/src/main/java/com/hp/hpl/jena
jena-core/src/test/java/com/hp/hpl/jena
jena-core/src/main/java/com/hp/hpl/jena
jena-arq/src/test/java/com/hp/hpl/jena
jena-arq/src/main/java/com/hp/hpl/jena
jena-tdb/src/test/java/com/hp/hpl/jena
jena-tdb/src/main/java/com/hp/hpl/jena
I've just trialled this for the codebase and it is scarily easy to do
with Eclipse.
D/ Get the build working.
Lots of POM updates to do but I have a build that builds.
(this isn't everything - it leaves scripts, logging settings and
resources to be done)
E/ Check and review
Is 24 hours enough here?
I want to keep the window between (C) and (F) small to cope with changes
during that window.
F/ When confirmed:
merge jena3 into master and push
If the merge does not work, delete master, and rename jena3 to master.
At this point master is jena3 and there is a jena2 branch.
G/ delete jena3 branch.
H/ Documentation/website
There are quite a few choices in the details - improvements welcome.
Experience doubly welcome. I've not done something as repo-wide as this
before.
Andy
learnings for migration:
L1/ Assembler files have class loading in them especially
com.hpl.hpl.jena.tdb. Maybe worth trapping during loading and changing
to org.apache.jena.tdb.
L2/ "java:" custom filter functions (ARQ and Leviathan). Again, add
transition to the loading step.
L3/ slf4j/log4j : logger names
L4/ Can collapse some module versions to track 3.0.0 (jena-text,
jena-spatial ...)
On 24/01/15 18:33, Andy Seaborne wrote:
> Here is a suggestion for Jena3.
>
> After 2.12.2 or 2.12.3,
>
> 1/ A branch for Jena2 ; master is Jena3.
> 2/ Switch to RDF 1.1 setting for strings
> 3/ Rename com.hp.hpl.jena packages to org.apache.jena
> 4/ Other changes
> 5/ Let things settle down.
> 6/ Release (beta? just go for it as 3.0.0?)
>
> (3) is the disruptive step - I doubt git merge is going to be much help
> after that for managing changes related to com.hp.hpl.jena packages
>
> I wrote some migration notes for the RDF 1.1 isms and packages.
>
> http://jena.staging.apache.org/documentation/migrate_jena2_jena3.html
>
> There is a lot of things that could be done. I like us to avoid
> over-committing ourselves. The question I have is what is *necessary*
> to drive into jena 3.first.
>
> Andy
