CODEWITHSUNDEEP
javadependenciesmaven-3
Mik378
Mik378

Reputation: 22191

Multi-Modules maven pom

While writing for the first time a multi-modules maven pom, I wonder something.

First, here my parent pom :

    ...
    <modelVersion>4.0.0</modelVersion>
    <groupId>project.room_management</groupId>
    <artifactId>room_management</artifactId>
    <packaging>pom</packaging>
    <version>1.0</version>
    <name>room_management</name>
    <modules>
        <module>room_management_dao</module>
        <module>room_management_domain</module>
        <module>room_management_service</module>
        <module>room_management_gui</module>
    </modules>
    ...

and one of its children :

     ...
    <parent>
        <groupId>project.room_management</groupId>
        <artifactId>room_management</artifactId>
        <version>1.0</version>
    </parent>

    <modelVersion>4.0.0</modelVersion>
    <groupId>project.room_management</groupId>
    <artifactId>room_management_domain</artifactId>
    <version>1.0</version>
   ...

Considering I don't need common modules to be share from parent to children poms, can I remove without "risks" the parent declaration into the children poms ? Or Maven does need it for modules compilation ?

Upvotes: 1

Views: 246

Answers (2)

khmarbaise
khmarbaise

Reputation: 97517

In this example you need the parent element, cause you have dependencies between gui and your service (service to dao as well). Furthermore you need to define the dependencies between the modules to see which module uses which. On the other hand maven needs this information to predict the order of build of the modules which is important. The next advantage of having such relationship is you can define the plugins/versions of dependencies in the parent module and many other things.

Upvotes: 1

Thorbj&#248;rn Ravn Andersen
Thorbj&#248;rn Ravn Andersen

Reputation: 75426

You do not need the <parent> section in the modules.

This primarily mean that each module must be independent - you cannot share configuration sections through the parent.

Upvotes: 1

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