Jeff,
My projects fit into the following groups:
o jars containing business logic
o jars containing common utilities
o wars for specific application servers
All of the above may share a parent POM, but why should a project that
produces a "jars containing business logic" be affected when a profile
that it does not use, like "cargo_tomcat_test", is updated?
Like you, I am just sharing my thoughts. The more we understand how
something is used, the better decision we can make. Worse yet, we may
learn something new in the process :)
Paul Spencer
Jeff Jensen wrote:
Hi Paul,
Indeed, yes. My comment on lack of build reproducibility was addressing the
"shared resource" approach (and you did not suggest), which is usually not
reproducible unless steps are deliberately made to source control the shared
resource in a correct manner (in the codelines of all its dependents);
apologies for not making that clear! :-)
By the fact that your deps & profiles are in the pom, which is versioned of
its own series, the profiles have the build reproducibility.
I also was commenting on the "weigh the effort for the benefit" of holding
profiles in a parent pom, which you commented was impractical, but the
benefit of reuse may outweigh the inconvenience, if they truly all have the
same profiles and profile deps. That is kind of stating the obvious, but
wanted to share the thought that it does have value even though I agree it
can be inconvenient... :-)
-----Original Message-----
From: Paul Spencer [mailto:[EMAIL PROTECTED]
Sent: Saturday, June 02, 2007 12:59 PM
To: Maven Users List
Subject: Re: Can a POM import a profile from anothe POM?
Jeff,
I believe I address your concern, which I share, of build
reproducibility by including a version number on the imported profile's
artifact, essentially making it behave like a dependency.
Below is the example, which was in my original post.
***
* POM of project which imports the profiles cargo_tomcat_remote and
* cargo_jetty_remote and selenium-integration-test.
***
<project>
...
<groupId>com.foo.applications</groupId>
<artifactId>webapp_1</artifactId>
...
<profiles>
<profile>
<id>cargo_tomcat_remote</id>
<groupId>com.foo.profiles</groupId>
<artifactId>cargo</artifactId>
<version>1.0</version>
<activation>
...
</activation>
</profile>
<profile>
<id>cargo_jetty_remote</id>
<groupId>com.foo.profiles</groupId>
<artifactId>cargo</artifactId>
<version>1.0</version>
<!-- used activation rules in imported profile -->
...
</profile>
<profile>
<id>selenium-integration-test</id>
<groupId>com.foo.profiles</groupId>
<artifactId>selenium</artifactId>
<version>1.0</version>
<!-- used activation rules in imported profile -->
...
</profile>
</project>
Paul Spencer
Jeff Jensen wrote:
One consideration of this though is build reproducibility. While it is
inconvenient to update all projects depending on the parent POM, it
facilitates build reproducibility, as the profiles are then correctly
versioned. A "shared resource" is not usually setup to facility a
reproducible build. What that means is consider the importance of
reproducible builds vs the effort to manage parent pom releases vs keeping
them separate in their own respective poms.
-----Original Message-----
From: Armin Ehrenfels [mailto:[EMAIL PROTECTED]
Sent: Saturday, June 02, 2007 11:02 AM
To: Maven Users List
Subject: Re: Can a POM import a profile from anothe POM?
Paul Spencer wrote:
Armin,
I did not know about profiles.xml, but this does not meet my
requirements. Since I used Continuum on a different server in
addition to developers on Windows and Unix machine, the use of
symbolic links will not work.
Indeed, my suggestion is not helpful in your particular case. The idea
of having a "central" profile resource available in a development
community sounds interesting to me. Maybe, you should formulate an
improvement to maven such as being able to access a network wide profile
resource via URL.
Good luck.
Armin
Paul Spencer
Armin Ehrenfels wrote:
Paul Spencer wrote:
I am finding that profiles are very powerful. As I make more use of
them across projects, many of which are unrelated, I find myself
copying a profile from one POM to another. Placing profiles in a
POM the is extended is impractical because each change to a profile
in the POM will prompt a release cycle of the POM and every project
that extends the POM.
Thus my question, is their a way of importing a profile from another
POM?
Hi Paul,
you don't need to import a profile. You can store it in a separate
file called profiles.xml, located in the same directory as your
pom.xml. Maven automatically looks for this file. If you work with an
UNIX OS, you probably know symbolic links, so locating a single
profiles.xml at a particular place and pointing to it from every
module directory is very easy.
HTH
Armin
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