[arquillian-issues] [JBoss JIRA] (ARQ-2053) Allow Arquillian Core to define a way to execute registration of extensions in order

[Alex Soto (JIRA)]

Alex Soto created ARQ-2053:
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             Summary: Allow Arquillian Core to define a way to execute registration of extensions in order
                 Key: ARQ-2053
                 URL: https://issues.jboss.org/browse/ARQ-2053
             Project: Arquillian
          Issue Type: Bug
            Reporter: Alex Soto
            Priority: Minor


With Arquillian Extensions you are able to override a service that was previously registered by Arquillian Core or by other extensions. 

The problem is that if if there two extensions that override the same service, it will depend on the order of the registration of the extension that will define which version of the service will be the one used at the end.

To avoid this problem this problem the best way would be to be able to set a priority in extension registry so you can set which one is going to be the last one.

The best none invasive approach we have found is using an annotation to set the order where the highest number is the last one to execute. In case of not defining a an annotation, the default order number will be 0.

So as an example an extension could be defined as:

{code:java}
@Precendence(100)
public class MyExtension implements LoadableExtension {}
{code}

The higher value of precedence the sooner it will be registered. This means that to ensure that your extension is registered last, it needs a negative value.



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