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Posted to dev@felix.apache.org by "Stephen Flynn (JIRA)" <ji...@apache.org> on 2010/04/12 17:46:42 UTC
[jira] Updated: (FELIX-2275) Component descriptor reference
elements are not ordered
[ https://issues.apache.org/jira/browse/FELIX-2275?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Stephen Flynn updated FELIX-2275:
---------------------------------
Attachment: ExampleComponent.java
serviceComponents.xml
Example annotated component and its generated descriptor showing references in wrong order.
> Component descriptor reference elements are not ordered
> -------------------------------------------------------
>
> Key: FELIX-2275
> URL: https://issues.apache.org/jira/browse/FELIX-2275
> Project: Felix
> Issue Type: Bug
> Components: Maven SCR Plugin
> Affects Versions: maven-scr-plugin-1.4.2
> Reporter: Stephen Flynn
> Attachments: ExampleComponent.java, serviceComponents.xml
>
>
> We use SCR annotations (1.2.0) and the SCR Maven Plug-in (1.4.2) to generate DS 1.1 component descriptors. All works well except for one issue - we cannot find a way to control the order of <reference/> elements in the generated descriptor through the @Reference annotation. A cursory glance suggests that <reference/> elements generated by the plug-in are not ordered in any way.
> The order of binding is significant. From the 4.2 Compendium spec....
> *112.5.7 Binding Services*
> "When binding services, the references are processed in the order in which
> they are specified in the component description. That is, target services from
> the first specified reference are bound before services from the next specified
> reference."
> We can work around this by manually creating descriptors but this is sub-optimal for obvious reasons.
> This appears to be caused by capturing references in a HashMap in the class SCRDescriptorGenerator.java. Should probably be a LinkedHashMap instead.
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