Transitive dependencies not resolved when dependency version defined in parents dependencyManagement

Question

I've got a multi-module project with layout as below:

pom.xml
projA
  trunk
    pom.xml
    projA1
      pom.xml
    projA2
      pom.xml

In the parent's pom I've defined dependencyManagement and properties:

<properties>
  <javaee-api.version>6.0</javaee-api.version>
  <log4j.version>1.2.11</log4j.version>
</properties>
...
<dependencyManagement>
  <dependencies>
    <dependency>
      <groupId>junit</groupId>  
      <artifactId>junit</artifactId>
      <version>${junit.version}</version>
    </dependency>
    <dependency>
      <groupId>javax</groupId>  
      <artifactId>javaee-api</artifactId>
      <version>${javaee-api.version}</version>
    </dependency>
  </dependencies>
</dependencyManagement>

pom.xml for projA2 contains:

<dependency>
  <groupId>log4j</groupId>
  <artifactId>log4j</artifactId>
</dependency>

pom.xml for projA1 contains:

<dependency>
  <groupId>${project.groupId}</groupId>
  <artifactId>projA2</artifactId>
  <version>${project.version}</version>
</dependency>

In projA1 I'm using log4j but the dependency is transitive (from projA2).

Now when I run mvn dependency:tree -X I get:

[WARNING] Invalid POM for mypackage:projA2:jar:1.0, transitive dependencies (if any) will not be available, enable debug logging for more details: Some problems were encountered while processing the POMs:
[ERROR] 'dependencies.dependency.version' for javax:javaee-api:jar is missing. @ line 37, column 15
[ERROR] 'dependencies.dependency.version' for log4j:log4j:jar is missing. @ line 56, column 15

but just below this lines I get:

[DEBUG]   testArtifact: artifact=log4j:log4j:jar:1.2.11:compile
[DEBUG]   includeArtifact: artifact=log4j:log4j:jar:1.2.11:compile
[DEBUG]   startProcessChildren: artifact=log4j:log4j:jar:1.2.11:compile
[DEBUG]   endProcessChildren: artifact=log4j:log4j:jar:1.2.11:compile
[DEBUG]   testArtifact: artifact=javax:javaee-api:jar:6.0:provided
[DEBUG]   includeArtifact: artifact=javax:javaee-api:jar:6.0:provided
[DEBUG]   startProcessChildren: artifact=javax:javaee-api:jar:6.0:provided
[DEBUG]   endProcessChildren: artifact=javax:javaee-api:jar:6.0:provided

The only solution is to specify log4j version (<version>${project.version}</version>) in projA2 pom.xml.

Question: what am I doing wrong :-(? I don't want to specify versions that are already defined in parent's dependencyManagement section.

Answer 1

I has faced same problem. In my case if forgot update parent POM in local repository. Try to do

mvn install

for parent module.

Answer 2

Had a similar issue. Removing (manually) all the projects involved from the local repository and run "mvn clean install" later worked for me.