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From Geir Magnusson Jr <g...@pobox.com>
Subject Re: Which applications run using Harmony classes?
Date Fri, 03 Mar 2006 18:14:09 GMT
Answer in Perl :

#@))_!@#__;[0,1,2,]; $'{%_[$a]}


Tim Ellison wrote:
> What is 'perl' ?
> (answers in 15 words or fewer)
> Tim
> zoe slattery wrote:
>> Finally - after a little more time than I'd thought - I have attached a
>> perl tool JIRA that takes a list of the classes that an application
>> loads (produced from java -verbose:class), compares them against the API
>> spec to filter out everything that isn't an API class, then compares the
>> list of API classes with what is currently in SVN to see what classes we
>> still need.
>> Most of what I've put in JIRA is sample input, output and instructions.
>> I've only tested it on Linux.
>> The sample output files that I've appended come from running Tomcat.
>> Geir Magnusson Jr wrote:
>>> zoe slattery wrote:
>>>> I've tried to post this a couple of times from another mail account -
>>>> but it seems to go into a black hole - apologies if another two copies
>>>> turn up later  :-(
>>>> I had some thoughts about running applications using Harmony classes.
>>>> Rather than just getting various applications and trying them with
>>>> Harmony I've been trying to see what classes they need.
>>>> For example, I downloaded and installed Derby then ran this:
>>>> java –verbose:class org.apache.derby.drda.NetworkServerControl start
>>>>> dbc.txt
>>>> This generates a file (dbc.txt) showing all of the classes that get
>>>> loaded when Derby starts up. The format of the output is something
>>>> like this:
>>>> ...
>>>> class load: java/io/BufferedOutputStream
>>>> class load: java/io/BufferedReader
>>>> class load: java/io/BufferedWriter
>>>> class load: java/io/ByteArrayInputStream
>>>> class load: java/io/ByteArrayOutputStream
>>>> class load: java/io/CharConversionException
>>>> class load: java/io/DataInput
>>>> class load: java/io/DataInputStream
>>>> ...
>>>> using an IBM JRE - the format would likely be different using another
>>>> JRE. I ran a few more similar things to look at what classes get
>>>> loaded when you create tables, add rows etc. and then cat'd the class
>>>> load output into a single file. A more extensive test could be run by
>>>> using Derby unit tests.
>>>> I wrote a small perl script that extracts the names of all of the java
>>>> classes and then compares these against the API spec to generate a
>>>> final list of API classes that are used by an application. I'd be
>>>> happy to supply the perl, although it needs a bit of tidying up.
>>> This is cool.
>>>> The next step would be to check how many of these exist in SVN already
>>>> - and maybe highlight the areas that we are missing? 
>>> Yes!
>>>> So far, the only
>>>> way I have found to get a list of files that exist in SVN is using
>>>> something like "svn list $repos_path -R", if anyone knows of a better
>>>> (faster) way I'd be happy to hear it.
>>> Try to find a way to do it on a local checkout.  We don't want to be
>>> banging the SVN repo like this.  (We've been having problems lately w/
>>> people walking through the SVN repo, file after file, version after
>>> version, via the viewCVS interface.  Not a good use of resources.
>>> This would be cool - I'd love to post these on the website,  to let
>>> people know what they could do to help get their favorite app up and
>>> going.
>>> I wonder too if this could be combined with Gump somehow, so we can
>>> automatically test a large swatch of the "popular java app" world.
>>> geir
>>>> Thoughts?
>>>> -- 
>>>> Zoe Slattery
>>>> IBM

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