Manage maven project version by profiles not by parent - maven

Question

I have a parent tag in pom.xml like this:
<parent>
<groupId>com.de</groupId>
<artifactId>MyApplication</artifactId>
<version>2.5.7-SNAPSHOT</version>
<relativePath>../pom.xml</relativePath>
</parent>
Also I have different profiles:
<profiles>
<profile>
<id>default-environment-settings</id>
<properties>
<app.env>dev</app.env>
</properties>
<activation>
<activeByDefault>true</activeByDefault>
</activation>
</profile>
<profile>
<id>xyz</id>
<properties>
<app.env>profile2</app.env>
</properties>
<activation>
<activeByDefault>false</activeByDefault>
</activation>
</profile>
<profiles>
Now I want that my application's version is managed by profiles not as a global parent so that each profile can have it's private version number.

Answer 1

Did you try this ?
<profiles>
<profile>
<id>default-environment-settings</id>
<properties>
<app.env>dev</app.env>
<projectVersion>1.0-SNAPSHOT</projectVersion>
</properties>
<activation>
<activeByDefault>true</activeByDefault>
</activation>
</profile>
<profile>
<id>xyz</id>
<properties>
<app.env>profile2</app.env>
<projectVersion>1.0</projectVersion>
</properties>
<activation>
<activeByDefault>false</activeByDefault>
</activation>
</profile>
<profiles>
And don't forget to put on your artifact
<version>${projectVersion}</version>

Answer 2

Profiles are not intended to declare POM's versions. If you define profiles as mentioned in eclideria's answer and your parent's POM with:
<groupId>com.de</groupId>
<artifactId>MyApplication</artifactId>
<version>${projectVersion}</version>
it will result in:
[WARNING]
[WARNING] Some problems were encountered while building the effective model for com.de:MyApplication:jar:1.0-SNAPSHOT
[WARNING] 'version' contains an expression but should be a constant. # com.de:MyApplication:${projectVersion}, ...MyApplication directory.../pom.xml, line ..., column ...
[WARNING]
[WARNING] It is highly recommended to fix these problems because they threaten the stability of your build.
[WARNING]
[WARNING] For this reason, future Maven versions might no longer support building such malformed projects.
[WARNING]