Re: [gentoo-soc] Gentoo/Java integration Project Weekly report #2

[Jiale Pan (Kyle Pan)]

Hi Serkan,

very glad to hear from you:)

On 2011年06月02日 00:10, Serkan Kaba wrote:

>> ------------------------progress of this week
>> --------------------------------
>>
>>
>> In this week I read a lot of Python docs and did a lot of practice.
>> During the time from a newbie of Python to now that I can say I'm quite
>> familiar with Python, I learned a lot.
> Great.
>> Base on that, I read through the java-config source code and add the two
>> functionalities to it as planned:
>> 1. add query package's javadoc path of specified package functionality.
>>      *currently usage: java-config -D PACKAGE ,--javadoc=PACKAGE to do that
>> 2. add query package's javasrc path of specified package functionality.
>>      *currently usage: java-config -C PACKAGE, --src=PACKAGE to do that.
>>
>> (if -D and/or -C options are not proper (eg reserved for other use,etc.)
>> or there are other considerations, please mention it in reply and I can
>> change to other words)
> We tend to use lowercase for query options and -c is unfortunately reserved.
Alright. I'll change to lowercase. And could you recommend  two letters? 
one for query javadoc and one for javasrc.


>>
>> ---------------------------------issues-----------------------------------
>>
>> I've already mentioned the compatibility issue in my last weekly report.
>> But still I cannot decide a solution. Since my mentor is devaway(he
>> mentioned in his last mail),so ***I'd like to ask experienced developers
>> for help here***. And thanks in advance:
> Sorry for my unavailability, I was unable to read/reply emails during my
> trip. I'll try to cover up and get things on track ASAP.
>>
>> At my current knowledge of Python I think it is impossible to write one
>> code snippet in Exception handling that both compile in Python 2.5 and 3.1:
>>
>> Python 2.5 takes " except UnexistingPackageError, e" Syntax
>> while Python 3.1 takes "except UnexistingPackageError as e". Syntax.
>>
>> I have to write Python 2.5 compatible code( because the latest Jython is
>> 2.5 and I'm intended to use it in my eclipse plugin). But when emerging
>> my java-config[1], at "Compilation and optimization of Python modules
>> for CPython 3.1" stage, it gives this error:
>>
>> --------------------
>>   * Compilation and optimization of Python modules for CPython 2.6 ...
>>   * Compilation and optimization of Python modules for CPython 3.1 ...
>> *** Error compiling
>> /usr/lib64/python3.1/site-packages/java_config_2/EnvironmentManager.py ...
>>    File
>> "/usr/lib64/python3.1/site-packages/java_config_2/EnvironmentManager.py", line
>> 59
>>      except InvalidVMError, ex:
>>                           ^
>> SyntaxError: invalid syntax
>> <<<
>> /usr/lib64/python3.1/site-packages/java_config_2/EnvironmentManager.py[co [
>> !! ]
>>   * Updating desktop mime database ...
>> ----------------------
>>
>> Since my improved version of java-config is intended to work in Python
>> 3.1 as well, one solution I thought is directly patch the src code to
>> let it in Python 3.1 Syntax after "* Compilation and optimization of
>> Python modules for CPython 2.6 ..." finishes and before
>> "* Compilation and optimization of Python modules for CPython 3.1 ..."
>> starts. The problem is that I've read java-config's ebuild but had
>> difficulties in locating at what function call this step happens. Also
>> I'm not sure patch in that time is acceptable or not.( I've read the
>> ebuild guild and it says all patches should normally be done in
>> src_prepare().)
> Patching in that stage is definitely an improper solution even if
> possible. As far as I read, their plan is to move on with 2.6
> development. Please ask either in #jython or their ML to see if they
> have a SVN branch that supports 2.6.

I've searched around their official site and not able to find official 
plan statements about when Jython 2.6 would be available. So I plan to 
ask on their ML. They have user ML and developer ML, before posting I 
just want your suggestions that about this kind of question, which list 
is better. Initially I prefer user ML cause I'm a Jython user using it 
in my program, but my question is also related to dev stuff (ie future 
plans). Just want to double check before action.
Thanks.


>>
>> ***So I'd like ask for suggestions about dealing with this issue. Or
>> other possible ways.*** Thanks.
>>
>> --------------------Plans for next week
>> ---------------------------------------
>>
>> As my plans in proposal my javadoc and javasrc functionalities adding is
>> done in 3rd week of Gsoc time, so I'm one week ahead of plan. Ahead of
>> plan is good I think, and in my next week I'll:
>> 1.Besides asking for suggestions, I'll continue research by myself on
>> the above issue.
>> 2.Begin GenEclipse plugin work
>>
>>
>>
>> [1] my branch of java-config:
>> http://overlays.gentoo.org/svn/proj/java/projects/java-config-2/branches/kylepan/java-config-2.1.9999k.ebuild
>>
>>
>>
>
> - --
> Sincerely,
> Serkan KABA
> Gentoo Developer
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-- 
Best regards,
Jiale Pan(Kyle Pan)