On the same "Iterable" problem (deviating from the "main OO question"
unwillingly),
I 've made my own Iterable<Someclass> property which is backed by a
List<Someclass> filled at runtime using the @Query backed Iterable (thus
enabling my class filtering to solve the "main OO question") and the JSP
works fine... When I substitute with the @Query filled Iterable directly I
get:
javax.servlet.jsp.JspTagException: Don't know how to iterate over
supplied "items" in <forEach>
Surely this is a JSP error, but how do we solve it ?
On Sat, Oct 29, 2011 at 8:16 PM, Agelos Pikoulas
<agelos.pikou...@gmail.com>wrote:
> Thank you Jean-Pierre/James for your answer - what you propose is certainly
> one valid way of doing it, but it is still doesnot feel like a 'natural' way
> : It doesn't allow the dynamic 'navigation' of bean properties that are them
> selves Collections that each entry might have other Collections etc.
> For instance I might have a User which has a getFollowers() or
> getLikedObjects() etc and I want to display some of their stuff, following
> some display logic etc :-) Perhaps this wouldn't be the most elegant way MVC
> wise, but I am not a spring/jsp/mvc expert anyway.
>
> Surelly this isn't SDN's fault, but JSP's. It would though be very helpful
> (and perhaps its a twoliner) if we could annotate @Query on more (immutable
> or not) Collection/iteration interfaces, say Iterator for a start....
>
> Regards
>
>
> On Thu, Oct 27, 2011 at 10:01 PM, Jean-Pierre Bergamin <
> jpberga...@gmail.com> wrote:
>
>> Hi Agelos
>>
>> Regarding your 2nd point:
>>
>> 2) 2) The minor issue I have regards (the otherwise brilliant)
>> @Query,
>> > due to its constraint of annotating (mainly) Iterable and NOT allowing
>> Set,
>> > List etc (a runtime exception is thrown
>> > org.springframework.data.neo4j.conversion.QueryResultBuilder$1 cannot be
>> > cast to java.util.List).
>> >
>> > This wouldn’t be a huge problem, but the JSP/JSLT <forEach> tag DOESNOT
>> > iterate Iterable (!!!), nor you can directly call .iterator() from
>> within
>> > JSP, making life hard on both ends.
>> >
>>
>> From the controller, just pass the iterator of the iterable to your JSP.
>> With Spring MVC, this would look like:
>>
>> @RequestMapping(method = RequestMethod.GET)
>> public String list(Model uiModel) {
>> uiModel.addAttribute("kpis", kpiRepository.findAll().iterator());
>> return "secure/kpis/list";
>> }
>>
>> In your JSP, you then can use this iterator as expected:
>>
>> <c:forEach items="${kpis}" var="kpi">
>> <tr>
>> <td><c:out value="${kpi.uuid}" /></td>
>> <td><c:out value="${kpi.name}" /></td>
>> </tr>
>> </c:forEach>
>>
>>
>> Best regards,
>> James
>> _______________________________________________
>> Neo4j mailing list
>> User@lists.neo4j.org
>> https://lists.neo4j.org/mailman/listinfo/user
>>
>
>
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