Maven can't get access to parent properties - maven

Question

I have following structure:
parent-pom (pom)
|
- base-component (with <parent> parent-pom </parent>)(pom)
|
-- child-component (with <parent> base-component </parent>)(jar)
-- some-folder/another-child (with <parent> base-component </parent>)(jar)
In parent-pom I have properties with versions like
<properties>
<product-version>3.7.8</product-version>
</properties>
When I build child-component and use there ${product-version} - it is built without errors.
But when I trying to build another-child(with child-component as dependency) - maven can't read ${product-version} or throws an error Could not find artifact base-component even if I set <relativePath>.
I think the problem is folder between base-component and another-child, but I can't move it to level up.
Any ideas?

Answer 1

Make sure that the relative path is set correctly in the another-child module. Since it's under another directory, its parent base-component should be up by two directories:
<parent>
<groupId>...</groupId>
<artifactId>base-component</artifactId>
<version>...</version>
<relativePath>../../pom.xml</relativePath>
</parent>
Also make sure that in the base-component project, the module definition includes the additional path for another-child, so it should be something like:
<modules>
<module>child-component</module>
<module>some-folder/another-child</module>
</modules>
Before building another-child (or any other sub-module), try to build (mvn install) the whole project, starting at the root parent.

Answer 2

Try setting on the pom the project directory.
Parent:
<properties>
<main.basedir>${project.basedir}</main.basedir>
</properties>
Sibbling/children:
<properties>
<main.basedir>${project.parent.basedir}</main.basedir>
</properties>
children/ grandchildren:
<properties>
<main.basedir>${project.parent.parent.basedir}</main.basedir>
</properties>