[jbossseam-issues] [JBoss JIRA] Resolved: (JBSEAM-3032) count query used by Query is not compliant JPQL
Dan Allen (JIRA)
jira-events at lists.jboss.org
Tue Mar 31 20:22:22 EDT 2009
[ https://jira.jboss.org/jira/browse/JBSEAM-3032?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Dan Allen resolved JBSEAM-3032.
-------------------------------
Resolution: Done
I introduced a lightweight feature checking framework on PersistenceProvider (can be expanded/refactored in the future)
PersistenceProvider has a public enum named Feature
That enum contains features that can be claimed by a provider
By default no features are supported by the base persistence provider (for now)
The HibernatePersistenceProvider supports the Feature WILDCARD_AS_COUNT_QUERY_SUBJECT
The features are added in the @PostConstruct init() method
Clients check for a feature using PersistenceProvider#supportsFeature(Feature)
EntityQuery checks for this feature when determining whether to use a wildcard or the entity name/alias for the count query subject
> count query used by Query is not compliant JPQL
> -----------------------------------------------
>
> Key: JBSEAM-3032
> URL: https://jira.jboss.org/jira/browse/JBSEAM-3032
> Project: Seam
> Issue Type: Bug
> Components: Framework
> Affects Versions: 2.0.2.GA, 2.1.0.A1
> Reporter: Dan Allen
> Assignee: Dan Allen
> Fix For: 2.2.0.CR1
>
> Attachments: JBSEAM-3032-branch20-v1.txt, JBSEAM-3032-trunk-v1.txt, JBSEAM-3032-trunk-v2.txt
>
> Original Estimate: 1 hour
> Remaining Estimate: 1 hour
>
> The count query used by getCountEjbQl() in Query is not compliant JPQL. It should be:
> select count(Entity) from Entity entity
> instead of
> select count(*) from Entity entity
> Where "entity" is the class name of the entity (for instance, Person). You can test this by using TopLink or OpenJPA.
> All we need to do is replace the * with the name of the Entity. (We don't even need to fish for the alias used in the query).
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