Maven cyclic referance on multi modules project

[stephaneeybert]

Hello,

I have a multi modules project and when I run the command:

mvn clean

I get a cyclic reference:

[ERROR] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] The projects in the reactor contain a cyclic reference: Edge between 'Vertex{label='com.learnintouch.lms.service:servic e'}' and 'Vertex{label='com.learnintouch.lms.data:data'}' introduces to cycle in the graph com.learnintouch.lms.data:data --> com.learnintouch.lms.service:service --> com.learnintouch.lms.data:data

I created my project so:

project --topLevelPackage com.learnintouch.lms --java 6 --packaging pom
module create --moduleName data --topLevelPackage com.learnintouch.lms.data
module focus --moduleName ~
module create --moduleName service --topLevelPackage com.learnintouch.lms.service
module focus --moduleName ~
module create --moduleName ui --topLevelPackage com.learnintouch.lms.ui
module create --moduleName vaadin --topLevelPackage com.learnintouch.lms.ui.vaadin
module focus --moduleName ~

module focus --moduleName data
jpa setup --provider HIBERNATE --database MYSQL
database properties list
database properties set --key database.username --value learnintouch
database properties set --key database.password --value mignet
database properties set --key database.url --value jdbc:mysql://localhost:3306/db_integration
database properties list
database introspect --schema db_integration
database reverse engineer --package ~.domain --schema PUBLIC --testAutomatically --includeNonPortableAttributes

module focus --moduleName service
service --interface ~.utils.PreferenceService --entity ~.domain.Preference
service --interface ~.user.UserService --entity ~.domain.User

finder add --finderName findPreferencesByNameEquals

So I looked in the pom-xml files and I can see the data/pom.xml file contains a dependency on the service module:

    <dependency>
      <groupId>com.learnintouch.lms.service</groupId>
      <artifactId>service</artifactId>
      <version>0.1.0.BUILD-SNAPSHOT</version>
    </dependency>

And the service/pom.xml file contains a dependency on the data module:

    <dependency>
      <groupId>com.learnintouch.lms.data</groupId>
      <artifactId>data</artifactId>
      <version>0.1.0.BUILD-SNAPSHOT</version>
    </dependency>

I had also noticed that when I added the annotation:

@RooService(domainTypes = { com.learnintouch.lms.data.domain.Preference.class })

in the service.utils.PreferenceService class, it had added, in a Roo maintained file sitting in the data (yes, in the data) module, a code fragment with a reference to the service class. But this is now gone and I cannot see it again. High Chaparal..

What wrong did I do to have the cyclic reference in the pom.xml files ?

So I edited the data/pom.xml file and removed the service dependency, and the Maven build clean passed fine.

But when running the Maven build to compile, it gives me the following compile error:

[INFO] Compiler errors :
error at public class PreferenceServiceImpl implements PreferenceService {
^^^^^^^^^^^^^^^^^^^^
/home/stephane/dev/java/projects/spring-roo/learnintouch/service/src/main/java/com/learnintouch/lms/service/utils/PreferenceServiceImpl.java:8:0::0 must implement abstract inter-type declaration: long com.learnintouch.lms.service.utils.PreferenceServi ce.countAllPreferences()
see also: /home/stephane/dev/java/projects/spring-roo/learnintouch/service/src/main/java/com/learnintouch/lms/service/utils/PreferenceService_Roo_Service.aj:12::0
error at public class PreferenceServiceImpl implements PreferenceService {
^^^^^^^^^^^^^^^^^^^^
/home/stephane/dev/java/projects/spring-roo/learnintouch/service/src/main/java/com/learnintouch/lms/service/utils/PreferenceServiceImpl.java:8:0::0 must implement abstract inter-type declaration: void com.learnintouch.lms.service.utils.PreferenceServi ce.deletePreference(com.learnintouch.lms.data.doma in.Preference)
see also: /home/stephane/dev/java/projects/spring-roo/learnintouch/service/src/main/java/com/learnintouch/lms/service/utils/PreferenceService_Roo_Service.aj:13::0
error at public class PreferenceServiceImpl implements PreferenceService {