Hi,
First I have added the documentation about the opportunities like this
(and other one as well a few days before, cause there had been no
documentation about that at all
https://issues.apache.org/jira/browse/MNGSITE-234):
<profiles>
<profile>
<activation>
<property>
<name>!debug</name>
</property>
</activation>
...
</profile>
</profiles>
which means if the property does not exist...and also works exactly like
this. The value does not matter nor is needed to give some.
If I argue from a logical point of view I would say (and expect):
<profiles>
<profile>
<activation>
<property>
<name>debug</name>
<value>!true</value>
</property>
</activation>
...
</profile>
</profiles>
This would mean: The value is not equal "true"...but the property must
exist...so something like "-Ddebug=WHATEVER"
The current behaviour is that the previous sentence will be calculated
by Maven as:
The property is not important nor is needed to exists..and the values is
not equal to "true"..which I think is wrong...
So it is not possible to express a thing like this:
<profiles>
<profile>
<activation>
<property>
<name>environment</name>
<value>!dev</value>
</property>
</activation>
...
</profile>
</profiles>
So this will be activated always...So the call:
mvn package -Denvironment=prod
mvn package
would be equivalent...which I think is wrong...
So it is not possible to identify a difference between those two Maven
calls.
Furthermore if I like to use a combination of two profiles like this:
<profiles>
<profile>
<id>not-existing</id>
<activation>
<property>
<name>!environment</name>
</property>
</activation>
...
</profile>
<profile>
<id>not-dev</id>
<activation>
<property>
<name>environment</name>
<value>!dev</value>
</property>
</activation>
...
</profile>
</profiles>
So if I call maven via:
mvn package
the last will take precendence...
Kind regards
Karl Heinz Marbaise
On 12/08/16 19:32, Robert Scholte wrote:
Hi,
Yes, this is correct. Just to clarify: -Dx is always the same is
-Dx=true [1]
I'd like to add -Dprofilea= : profile activated
5. mvn initialize -Dprofilea= : profile activated
maybe if the property was called skipITs instead of profilea the
examples are better to follow, i.e. always activate this profile (with
integration-tests), *unless* skipITs is true.
Robert
[1]
https://maven.apache.org/ref/3.3.9/maven-embedder/xref/org/apache/maven/cli/MavenCli.html#L1544
On Fri, 12 Aug 2016 18:59:14 +0200, Guillaume Boué <gb...@apache.org>
wrote:
Hi Robert,
If this is expected, I think the documentation in
http://maven.apache.org/guides/introduction/introduction-to-profiles.html
should indeed be clarified. Currently, in that situation, it says
"The following profile will be activated when the system property
"debug" is defined with a value which is not "true"."
In this case, when invoking Maven with "mvn initialize", profilea
isn't defined so I would expect the profile not to be activated. This
is also what would happen if the value in the profile activation was
commented out.
To recap, this is the current result with Maven 3.3.9 for this
situation (and latest 3.4.0-SNAPSHOT):
1. mvn initialize: profile activated
2. mvn initialize -Dprofilea: profile not activated
3. mvn initialize -Dprofilea=false: profile activated
4. mvn initialize -Dprofilea=true: profile not activated
Guillaume
Message du 12/08/16 18:34
De : "Robert Scholte"
A : "Maven Developers List"
Copie à :
Objet : Re: Profile Activation
Hi Karl Heinz,
you should read the activation like this:
always activate, *unless* profilea is true.
So it says nothing about the availability of the property.
Maybe the documentation isn't clear enough.
Robert
On Fri, 12 Aug 2016 17:45:21 +0200, Karl Heinz Marbaise
wrote:
> Hi to all,
>
> I have the following profile:
>
>
>
> profile-not-value-true
>
>
> profilea
> !true
>
>
>
>
>
> com.soebes.maven.plugins
> echo-maven-plugin
>
>
> initialize
>
> echo
>
>
>
>
>
> profile not value true
>
>
>
>
>
>
>
> So the question is: What would you expect you need to do to activate
> this profile?
>
> Currently this profile is activated cause if I don't define the
property
> "profilea" at all it seemed to that Maven is assuming this means "not
> value 'true'" ?
>
> I have assumed it should be activated if the property exists which
means
> giving it on command line like this:
>
> mvn -Dprofilea
>
>
>
> WDYT ?
>
> Kind regards
> Karl Heinz Marbaise
>
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Mit freundlichem Gruß
Karl-Heinz Marbaise
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