Intellij maven module inheritence

Question

I have gone through the documentation, but still not able to achieve what I am trying to. The requirement is very simple. I have two maven projects. ProjectA and ProjectB. ProjectB requires to reuse some common configs and code from ProjectA. I don't want to just copy and paste them as this is will require to updates if anything changes. So, what are the options now? How can I achieve this?

score 1 · Answer 1 · answered Aug 06 '17 at 09:26

You might have two options.

Use your ProjectA has parent of your projectB

http://maven.apache.org/xsd/maven-4.0.0.xsd"> 4.0.0
```
<parent>
    <groupId>com.example</groupId>
    <artifactId>projectA</artifactId>
    <version>1.0</version>
</parent>

   <artifactId>projectB</artifactId>
```
Thus, your projectB will inherit from the first one, with all its dependencies build / dependency management.

Use your ProjectA has dependency of your projectB

http://maven.apache.org/xsd/maven-4.0.0.xsd"> 4.0.0

   <artifactId>projectB</artifactId>

<dependencies>
 <dependency>
    <groupId>com.example</groupId>
    <artifactId>projectA</artifactId>
    <version>1.0</version>
    </dependency>
</dependencies>

In this case, projectB wil inherit from projectA all the sources and dependencies.

Thank you so much for the info. The first approach did not work. Adding module as dependency worked, but when I run mvn install, it says package com.email.model does not exist, which is available at compile time in intellij. — Imran, Aug 06 '17 at 10:58

score 1 · Accepted Answer · answered Aug 06 '17 at 09:28

I don't think there is a silver bullet for this but we use combination of these two aproaches:

Multi-module project (best if projects are connected and you want to change common parts a lot): https://maven.apache.org/guides/mini/guide-multiple-modules.html
Extract parts you want to reuse from projectA and make it a standalone artifact which you publish to maven repo (local/private/public - depending on your use case).

score 0 · Answer 3 · answered Aug 06 '17 at 11:55

I created a multi module maven project but it was always compiling that the packages not found. Eventually, I figured out the issue here. Maven Multi-module dependency package not found

<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<executions>
    <execution>
        <goals>
            <goal>repackage</goal>
        </goals>
        <configuration>
            <classifier>exec</classifier>
        </configuration>
    </execution>
</executions>

Intellij maven module inheritence

3 Answers3