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Date: Tue, 14 Oct 2008 17:13:51 -0500 (CDT)
From: "apache maillist (JIRA)" <jira@codehaus.org>
To: issues@continuum.apache.org
Subject: [jira] Issue Comment Edited: (CONTINUUM-1606) All modules are
 always rebuilt when using M2 with a hierarchical structure
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    [ http://jira.codehaus.org/browse/CONTINUUM-1606?page=3Dcom.atlassian.j=
ira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=3D150818=
#action_150818 ]=20

apache.maillist edited comment on CONTINUUM-1606 at 10/14/08 5:12 PM:
----------------------------------------------------------------------

it would be very nice if you could test the case below:
=95=09pom.xml (
o=09parentpom (parent pom for module1 and module2)=20
-- pom.xml
o=09module1=20
-- pom.xml
o=09module2
-- pom.xml

 =20

      was (Author: apache.maillist):
    it would be very nice if you could test the case below:
 +  pom.xml (
               + parentpom (parent pom for module1 and module2)=20
                   +-- pom.xml
               + module1=20
                  +-- pom.xml
                + module2
                  +-- pom.xml
 =20
 =20
> All modules are always rebuilt when using M2 with a hierarchical structur=
e
> -------------------------------------------------------------------------=
-
>
>                 Key: CONTINUUM-1606
>                 URL: http://jira.codehaus.org/browse/CONTINUUM-1606
>             Project: Continuum
>          Issue Type: Bug
>          Components: Integration - Maven 2
>    Affects Versions: 1.1
>            Reporter: Julien S
>            Priority: Critical
>             Fix For: 1.x
>
>         Attachments: continuum-1.2.patch, CONTINUUM-1606.patch, continuum=
.patch
>
>
> When using Maven2, the recommended directory structure for a multi-module=
 build is hierarchical, e.g.:
> - pom.xml (parent pom of all modules)
> --- module1
>   +-- pom.xml
> --- module2
>   +-- pom.xml
> etc
> When using such a structure with continuum, if a change is committed in m=
odule28, then EVERY module will be rebuilt: indeed the parent pom will be r=
ebuilt because the change is "under" its scm tree, and all the other module=
s will therefore we rebuilt because of a "dependencies change" on the paren=
t pom. This can easily multiply the build time by a factor of 10 or 20.
> I have attached a patch. It considers that the parent has "changed" only =
if its pom.xml has changed. Not sure it is perfect, but it works for me (th=
e patch has been tested (against continuum-1.1 and trunk). Feel free to rew=
rite or modify it as much as you like.

--=20
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