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From "Nascif Abousalh-Neto (JIRA)" <>
Subject [jira] Commented: (IVY-897) Add VPF as a report output format
Date Sun, 07 Sep 2008 02:37:44 GMT


Nascif Abousalh-Neto commented on IVY-897:

Hi Xavier, 
It sure can be kept stand-alone and called with any XSLT tool. But that means the user has
to go over the extra work to provide the "glue" to find the resolved report in the cache and
then doing the transformation.

What I did was to clone the repreport task and add new methods to enable vpf as an output
option, just like you already have for graphml and dot:

            if (vpf) {
              genvpf(cacheMgr, md.getModuleRevisionId().getOrganisation(), md

    private void genvpf(ResolutionCacheManager cache, String organisation, String module)
    throws IOException {
      gen(cache, organisation, module, 
          getLocalStylePath(cache.getResolutionCacheRoot(), "/vpf.xsl"), "vpf");

But I the real important change I made to repreport was exposing the "download" option from
ResolverOptions. Running repreport as is was blowing away my disk quota!

            ResolveOptions ro = new ResolveOptions()

But if you meant integration of the vpf files with the resolution process, the trick is to
include it with the properties command in your ivysettings:

  <settings defaultResolver="${default.resolver}" />
  <properties file="${vpf.file}" />

Now the user has a the flexbility of dealing with versions in a centralized way, by selecting
the appropriate vpf.file. He even implement a global version promotion mechanism.

Of course it is your call - a short article on the wiki would work as well. 

> Add VPF as a report output format
> ---------------------------------
>                 Key: IVY-897
>                 URL:
>             Project: Ivy
>          Issue Type: New Feature
>          Components: Core
>    Affects Versions: 2.0.0-beta-1
>            Reporter: Nascif Abousalh-Neto
>            Priority: Minor
>             Fix For: unspecified
>         Attachments: vpf.xsl
> One of the best practices in the use of Ivy for large organizations is to replace all
the revision values in the ivy.xml files with properties. 
>   <dependency name="my.module" revision="${my.module.revision}" ... />
> This approach allows an administrator to control all revisions values used by all modules
in one single place - a Version Property File (or VPF for short). This way versions can be
controlled in a uniform way, with minimum maintenance and reduced chance of error. For example,
you can upgrade all your modules dependencies from Log4J 3.5 to 4.0 with one single line change
- and be sure that you didn't forget any of them behind.
> Creating and maintaining VPFs is not trival though. One  way to automate the process
is to "harvest" the module names and their latest versions from the repository, using the
repreport task to create a resolution report for the entire repo and then converting it to
a property file format using a XSL spreadsheet (attached).

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