EAR shared libraries

[a.gvozdik86]

I have the application with many dependencies. I want to move 3rd party dependencies (some of them not 3rd party, but I don't need to update it very often).

I was trying to use JBoss module with all my dependencies, but I was not able to deploy my application.

I've created separate EAR project with all my dependencies. I'm using maven-shade-plugin to merge resources  with the same name (META-INF/spring.handlers, META-INF/spring.schemas).

In my main EAR project I have sub-deployment dependency to my new EAR with 3rd party.

I'm deploying EAR-dependencies and then EAR with my main application. EAR-dependencies deploys successfully, but not main application.

The problem is after main application loads some of classes from EAR-dependencies (Spring is trying create beans. Spring is located in ear-dependencies) I have ClassNotFoundException.

This class is loading with EAR-dependencies module class loader and this class has injected implementation from EAR main file.

Why my main application can get classes from EAR-dependencies, but not vice versa?

<?xml version="1.0" encoding="ISO-8859-1"?>  
<jboss-deployment-structure xmlns="urn:jboss:deployment-structure:1.2">  
<ear-subdeployments-isolated>false</ear-subdeployments-isolated>  
<sub-deployment name="mainapplication.war">  
<dependencies>  
<module name="deployment.eardependencies.ear" meta-inf="import" />  
</dependencies>  
<local-last value="false" />  
</sub-deployment>  
</jboss-deployment-structure> 

[jewellgm]

You've got a circular dependency, which raises all kinds of red flags.  The first thing I would suggest doing is to figure out a way to package your ears so that they aren't dependent on each other.  Having said that, the "ear-subdeployments-isolated" tag only works within a single ear - it doesn't make classes globally visible across all deployments.  You would need to also add a jboss-deployment-structure.xml to your dependencies ear and make it dependent on your main application.  You should really try to resolve the circular dependency though.

[a.gvozdik86]

jewellgm  написал(-а):

You would need to also add a jboss-deployment-structure.xml to your dependencies ear and make it dependent on your main application.

I can not do this because I'm getting "module not found" error in case when I try to deploy dependencies.

Is it possible to do bidirectional library sharing?

[jewellgm]

The only way that I can think of how to accomplish what you want is to remove the jar from the application ear, and then put that into a wildfly module.  You would then need to make both ears dependent on that module.

I am guessing that your code repository still has things set up with circular dependencies at compile-time though.  Ideally, the best thing to do is to refactor the code to resolve it.