[weld-issues] [JBoss JIRA] Assigned: (WELDX-177) add getSingleResult() to PropertyQuery

[Dan Allen (JIRA)]

     [ https://jira.jboss.org/browse/WELDX-177?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dan Allen reassigned WELDX-177:
-------------------------------

    Assignee: Dan Allen


> add getSingleResult() to PropertyQuery
> --------------------------------------
>
>                 Key: WELDX-177
>                 URL: https://jira.jboss.org/browse/WELDX-177
>             Project: Weld Extensions
>          Issue Type: Feature Request
>    Affects Versions: 1.0.0.Beta1
>            Reporter: Dan Allen
>            Assignee: Dan Allen
>             Fix For: 1.0.0.Beta2
>
>
> PropertyQuery should offer the method getSingleResult() for the same reason it exists in the JPA Query interface: to fetch a single result but also assert that there is only one result to be fetched. If more than one property is matched when getSingleResult() is called, an exception will result. 
> Using getFirstResult() to return exactly one result is inappropriate (and could lead to bugs) because it could hide the fact that multiple properties are being inadvertently matched. As a workaround, the developer would currently have to run getResultList() to ensure only one property matches. Offering a getSingleResult() would resolve these issues.
> See http://download.oracle.com/javaee/6/api/javax/persistence/Query.html#getSingleResult()

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