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From Tim Ellison <t.p.elli...@gmail.com>
Subject Re: Which applications run using Harmony classes?
Date Thu, 09 Feb 2006 11:47:05 GMT
Would be good to get Japitools reports going on the Harmony codebase too.


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


Tim Ellison (t.p.ellison@gmail.com)
IBM Java technology centre, UK.

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