Hey all,
I'm trying to use a selectManyListbox component on a page to allow the
user to select multiple things. The SelectItems are created from a list
returned from Hibernate so the value object is of type Long. In my
backing bean I'm using the following methods:
public Long[] getSelectedItems();
public void setSelectedItems (Long[] ids);
The page comes up just fine to start with but when I try to submit it I
get conversion error. The headlines from the stack trace are:
javax.faces.el.EvaluationException: Cannot set value for expression
'#{departmentTypeHandler.selectedInstitutionTypeIds}' to a new value of
type [Ljava.lang.Object;
Caused by: javax.servlet.jsp.el.ELException: Attempt to coerce a value
of type "[Ljava.lang.Object;" to type "[Ljava.lang.Long;
I tried setting a converter on the selectManyListbox with
converter="javax.faces.Long" to try and make it convert the String[] to
a Long[]. But that didn't work at all, seemed as if the converter
didn't even get used. Is this the right approach or do I need to create
a converter for converting a String[] to a Long[]?
I know I could probably convert the value to of the SelectItems to
Strings, but I'd rather not do that unless I absolutely have to. Seems
a little hackish. What else might I try?
Thanks,
Rich
