Named bean not scanned in a Maven multi module project

[thierryler]

Hello.

I created a new Seam 3 project using the Maven archetype as described on the getting started page (http://seamframework.org/Documentation/CDIQuickstartForMavenUsers) :

mvn archetype:generate -DarchetypeArtifactId=jboss-jsf-weld-servlet-webapp -DarchetypeGroupId=org.jboss.weld.archetypes -DarchetypeVersion=1.0.1.Beta1 -DarchetypeRepository=central

Then I added a named bean :

@Named
public class IdefixDog {
     public String getName() {
          return "Idefix";
     }
}

And I used the named bean in index.xhtml :

<h3>Dog 2 name: #{idefixDog.name}</h3>

It worked !
(Tomcat 6, Eclipse Indigo, JBoss Tool 3.3, JDK 1.6)

Then I transformed the project into a Maven multi module project.

The parent pom :

<project >
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.ice</groupId>
  <artifactId>seam3-test</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>pom</packaging>

  <modules>
    <module>seam3-test-model</module>
    <module>seam3-test-web</module>
  </modules>

The seam3-test-model pom :

<project >
     <modelVersion>4.0.0</modelVersion>
     <parent>
          <groupId>com.ice</groupId>
          <artifactId>seam3-test</artifactId>
          <version>1.0-SNAPSHOT</version>
     </parent>

     <groupId>com.ice</groupId>
     <artifactId>seam3-test-model</artifactId>
     <version>1.0-SNAPSHOT</version>
     <packaging>jar</packaging>

The seam3-test-web pom :

<project >
     <modelVersion>4.0.0</modelVersion>

     <parent>
          <groupId>com.ice</groupId>
          <artifactId>seam3-test</artifactId>
          <version>1.0-SNAPSHOT</version>
     </parent>

     <groupId>com.ice</groupId>
     <artifactId>seam3-test-web</artifactId>
     <version>1.0-SNAPSHOT</version>
     <packaging>war</packaging>

     <dependencies>
          <dependency>
               <groupId>com.ice</groupId>
               <artifactId>seam3-test-model</artifactId>
               <version>1.0-SNAPSHOT</version>
          </dependency>

Then I added a new named bean in the seam3-test-model module :

@Named
public class MilouDog {
     public String getName() {
          return "Milou";
     }
}

And I used the milou bean in index.xhtml :

<h3>Dog 1 name: #{milouDog.name}</h3>
<h3>Dog 2 name: #{idefixDog.name}</h3>

BUT it only prints Idefix (ie. it does not print Milou). It works if I move the milou bean into the web module.

I guest it only scan the web module. How can I make the model module to be scanned ? What is the propest issue, the good way ?

Help.
Th.

[lightguard]

beans.xml location in the new archive?

[thierryler]

Hello.

What do you mean ?

Do I have to create a bean.xml file ? I believed that using the annotation named was enough. Do I have to create the file AND to add the annotation ? Both ?

I only have one bean.xml file in the web module (under src/main/resources/META-INF) and the file is empty...

Thx,
Th.

[lightguard]

Yes, you need both. The beans.xml file is really little more than a marker file for CDI. Without it, CDI would have to scan every jar on the classpath looking for annotations which could take a long time and is not very efficient. Any archive you have CDI components in needs to have a beans.xml*

* There is a caveat with this. If you create a portable extension and register beans that way, you do not need a beans.xml, but this is certainly more work than creating an empty beans.xml file.

[thierryler]

Hello.

Thanks for your answer.

I had the following beans.xml file in the web module (src/main/resources) :

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://java.sun.com/xml/ns/javaee"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="
      http://java.sun.com/xml/ns/javaee 
      http://java.sun.com/xml/ns/javaee/beans_1_0.xsd">
</beans>

And I copied this beans.xml file into the model module. But it still does not work :-( no change.

[thierryler]

Sorry,

I forgot the META-INF folder.

I moved the beans.xml file into the META-INF folder and it works now.

Thank you for the help !

Th.