Re: Multiple source roots?

I used InteliJ and I didn't like that it doesn't really understand 
project structure and especially profiles. NB works with maven to figure 
out dependencies and you can use profiles to share build groups with 
other devs.

For example here you have a full build and a utils build that can be 
built separately (not always great, but it works good enough in NB):

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 
https://maven.apache.org/xsd/maven-4.0.0.xsd">

     <modelVersion>4.0.0</modelVersion>
     <groupId>pl.myproject</groupId>
     <artifactId>myproject</artifactId>
     <version>1.0-SNAPSHOT</version>
     <packaging>pom</packaging>
     <name>myproject</name>

     <modules>
         <module>myproject-core</module>
         <module>myproject-saas</module>
         <module>myproject-utils</module>
         <module>myproject-dwh</module>
         <module>myproject-lms-client</module>
         <module>myproject-extapp</module>
         <module>myproject-opac</module>
     </modules>

     <profiles>
         <!-- default -->
         <profile>
             <id>full</id>
             <activation>
<activeByDefault>true</activeByDefault>
             </activation>
             <modules>
                 <module>myproject-core</module>
                 <module>myproject-saas</module>
                 <module>myproject-lms-client</module>
                 <module>myproject-extapp</module>
                 <module>myproject-aash</module>
                 <module>myproject-utils</module>
                 <module>myproject-dwh</module>
                 <module>myproject-opac</module>
             </modules>
         </profile>

         <!-- UTILS -->
         <profile>
             <id>utils-build-only</id>
             <properties>
<skip.integration.tests>true</skip.integration.tests>
<skip.unit.tests>true</skip.unit.tests>
             </properties>
             <modules>
                 <module>myproject-saas</module>
                 <module>myproject-utils</module>
             </modules>
         </profile>
         <profile>
             <id>utils-development</id>
             <properties>
<skip.integration.tests>true</skip.integration.tests>
             </properties>
             <modules>
                 <module>myproject-saas</module>
                 <module>myproject-utils</module>
             </modules>
         </profile>
         <profile>
             <id>utils-full</id>
             <modules>
                 <module>myproject-saas</module>
                 <module>myproject-utils</module>
             </modules>
         </profile>
     </profiles>

     <build>
         <plugins>
             <plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
                 <version>3.14.0</version>
                 <configuration>
                     <release>17</release>
                     <encoding>UTF-8</encoding>
                 </configuration>
             </plugin>
         </plugins>
     </build>

     <dependencies>
         <dependency>
<groupId>org.apache.logging.log4j</groupId>
             <artifactId>log4j-core</artifactId>
             <version>2.24.3</version>
         </dependency>
         <dependency>
             <groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-engine</artifactId>
             <scope>test</scope>
         </dependency>
     </dependencies>

</project>



Blake McBride (2025-09-18 22:42):
> According to ChatGPT:
>
> If you have *multiple source roots*, Maven itself only supports a 
> *single* |<sourceDirectory>| and |<testSourceDirectory>| in the 
> |<build>| section. To handle *more than one*, you need to *declare one 
> as the “main”* and then use the |build-helper-maven-plugin| to add the 
> rest.
>
> This is one of many reasons I resorted to my own build system.
>
> (BTW, IntelliJ supports any number of source roots.)
>
> --blake