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From "Pimentel, Robert" <>
Subject RE: Plugin to determine release order for multiple projects
Date Wed, 30 Jan 2013 15:47:29 GMT
This is the type of thing I've been hoping for. We are still in the same boat so to speak.
Has your Legal department allowed you to release this?


-----Original Message-----
From: Ansgar Konermann [] 
Sent: Friday, May 25, 2012 4:14 PM
Subject: Re: Plugin to determine release order for multiple projects

Hi there.

We've been doing without multimodules for some time now, so we ended up with a number of standalone
Maven modules and faced a very similar problem as you do now. We thus created a prototype
of a Maven plugin which extracts the project interdependencies from the POMs which are deployed
in our Maven repository. It starts with a POM listing all of our final artifacts as dependencies
and traverses the dependency trees of all of them to find those projects which are under our
control (filtering by groupId prefix).

It currently generates a DOT file to display project dependencies, and a groovy snippet (also
representing the  module dependencies). We then paste the groovy snippet into a generic release.groovy
script. The script is capable of releasing any module which was modified (we specify which
modules are modified) and will re-build and release all those depending on modified modules,
by calling Maven with the appropriate release plugin goals.

We plan to make this open source in the next few months, but as it was created during working
hours, our legal department is still working something out so that publishing is okay for
both my employer and the OSS community.

I know this probably was a rather terse description of the concept. If you have further questions,
feel free to ask.

Best regards


Am 25.05.2012 22:50, schrieb Thiessen, Todd (Todd):
> Can't you just look at the reactor order?  That will tell you which projects you would
have to release first.
>> -----Original Message-----
>> From: Pimentel, Robert []
>> Sent: Friday, May 25, 2012 4:47 PM
>> To: ''
>> Subject: Plugin to determine release order for multiple projects
>> Hello,
>> We currently have about 40 different multi-module projects. To date, 
>> we have determined an appropriate release order for the projects by 
>> manually parsing the POM files and making note of the dependencies. 
>> We keep our list in a spreadsheet, and it is re-evaluated with every 
>> release because (a) new projects are added (b) the list of projects 
>> being released changes from one release to the next (c) the project 
>> interdependencies change. As you can imagine this is both tedious and 
>> time-consuming. Do you know of a plugin, or any (preferably free) 
>> third-party tools that can parse a collection of project POMs and 
>> produce an appropriate release order? Additionally, it would be great 
>> if the product could check for circular dependencies. I am at the 
>> point where I am going to create something myself, but would prefer 
>> not to if something like this already exists.
>> Windows Server 2003 SP2
>> Apache Maven 2.2.1 (r801777; 2009-08-06 14:16:01-0500) Java version: 
>> 1.6.0_24
>> Thanks,
>> Rob
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