[infinispan-issues] [JBoss JIRA] (ISPN-2826) CacheQuery.list() returns List<Object>, which is hard to cast

Mircea Markus (JIRA) jira-events at lists.jboss.org
Tue Jul 2 06:55:22 EDT 2013


     [ https://issues.jboss.org/browse/ISPN-2826?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mircea Markus updated ISPN-2826:
--------------------------------

    Fix Version/s:     (was: 6.0.0.Final)
                       (was: 6.0.0.Beta1)

    
> CacheQuery.list() returns List<Object>, which is hard to cast
> -------------------------------------------------------------
>
>                 Key: ISPN-2826
>                 URL: https://issues.jboss.org/browse/ISPN-2826
>             Project: Infinispan
>          Issue Type: Feature Request
>          Components: Querying
>            Reporter: Ray Tsang
>            Assignee: Adrian Nistor
>            Priority: Minor
>
> In example for Books in https://docs.jboss.org/author/display/ISPN/Querying+Infinispan
> ~~ snip snip ~~
> CacheQuery query = searchManager.getQuery(luceneQuery, Book.class); 
> // and there are your results!
> List<Book> objectList = query.list();
> ~~ snip snip ~~
> This doesn't actually work.  CacheQuery.list() returns List<Object>
> Thus, you will need to cast: List<Book> books = (List<Book>) cq.list();
> But this wouldn't work... Instead you'll end up doing: List<Book> books = (List<Book>)(List<?>) cq.list();

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