Hello,
Cracked it - for posterities sake I had the issue that my sort
was not working with a custom comparator - the jsp was as follows:
<display:column class="code" property="code" sortable="true"
titleKey="workitem.code" url="/viewWorkItem.html" paramId="id"
paramProperty="id"
sortProperty="code"
comparator="de.mpicbg.db.common.comparator.AlphanumComparator" />
This however was not working, the custom comparator was not even
being constructed - never mind used. I dug around a lot and eventually
pulled down the displaytag source and dug through it - sprinkling
logging throughout the code. What was strange was that the
setComparator was not being called, i checked the setdecorator and that
was not being called in other cases - but it did work. To cut a long
story short, I inherited my includes header which had the following import:
<%@ taglib uri="http://displaytag.sf.net/el"; prefix="display" %>
This meant that the display would _always_ use the el version of the
classes no matter what happened and these did not use the setXXX on the
model. This is compounded in that there is a slight bug in
setComparator on the column class in that this is being evaluated there
and then and not in end tag (there is even a todo abut it) - therefore
if you evaluate on set but the el version does not use set then you will
never manage to set your comparator if you are using the el version of
displaytag.
I've fixed that bug in my code here - to the devs do you want a
patch for the fix? It is not much of a patch (as it requires not much
of a fix!) as it is pretty simple to fix but I could submit it if you wish.
Cheers,
Neil
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