在依赖链开始时执行Maven插件

Question

I have three maven projects: A -> B -> C. To better explain situation I show pseudo pom.xml's:

A pom.xml

<groupId>X</groupId>
<artifactId>A</artifactId>
<version>1</version>

B pom.xml

<groupId>X</groupId>
<artifactId>B</artifactId>
<version>1.5</version>
<dependency>
  <groupId>X</groupId>
  <artifactId>A</artifactId>
  <version>1</version>
</dependency>

C pom.xml

<groupId>X</groupId>
<artifactId>C</artifactId>
<version>2.5</version>
<dependency>
  <groupId>X</groupId>
  <artifactId>B</artifactId>
  <version>1.5</version>
</dependency>

I would like to execute maven plugin just in A project and then automatic in other ( B and C) like a chain, when I execute in B then also just in C would be automatic too. The problem is that in A project there is no information about B (I think). Changing pom's structure is extremity.

Do you have some idea how do it? I will be grateful for any hint.

Answer 1

maven's plugin's execution is tied to particular phase of maven's build lifecycle, for example surefire plugin by default ties to test phase

now consider you have a plugin that you want to execute in all project as a chain, you would have to create a separate build profile and tie your plugins execution after validate phase

and invoke mvn validate so it life cycle will go to just one phase (ie validate) and it will invoke your plugin like a chain

Answer 2

One way you can approach this is (if you haven't tried it yet) is: Keep a root pom.xml with the following: ... ...

<packaging>pom</packaging>
   <modules>
     <module>A</module>
     <module>B</module>
     <module>C</module>
   </modules>
 ....
 ...

This will "act" like a chain.