Re: Wicket 6.5 CompoundPropertyModel constructor ambiguity
I believe that this question has been asked recently and it got a response. http://markmail.org/thread/rfcqarnvct3t2gh3 On Fri, Jan 25, 2013 at 11:24 AM, Pieter Claassen pieter.claas...@gmail.com wrote: When I try to create the following model after migrating to wicket 6.5.0 new CompoundPropertyModelReportWebModel(reportWebModel) *where* ReportWebModel extends BaseWebModelReport *and* BaseWebModelT implements IModel My IDE (Intellij) shows no problem with type checking the code but when I try to compile it I get: java: reference to CompoundPropertyModel is ambiguous, both constructor CompoundPropertyModel(org.apache.wicket.model.IModelT) in org.apache.wicket.model.CompoundPropertyModel and constructor CompoundPropertyModel(T) in org.apache.wicket.model.CompoundPropertyModel match The problem goes away when I remove the generics but then I also lose the type checking. Any suggestions? Thanks, Pieter -- Martin Grigorov jWeekend Training, Consulting, Development http://jWeekend.com http://jweekend.com/
Re: Wicket 6.5 CompoundPropertyModel constructor ambiguity
On Fri, Jan 25, 2013 at 4:24 AM, Pieter Claassen
pieter.claas...@gmail.com wrote:
When I try to create the following model after migrating to wicket 6.5.0
new CompoundPropertyModelReportWebModel(reportWebModel)
*where*
ReportWebModel extends BaseWebModelReport
*and*
BaseWebModelT implements IModel
My IDE (Intellij) shows no problem with type checking the code but when I
try to compile it I get:
java: reference to CompoundPropertyModel is ambiguous, both constructor
CompoundPropertyModel(org.apache.wicket.model.IModelT) in
org.apache.wicket.model.CompoundPropertyModel and constructor
CompoundPropertyModel(T) in org.apache.wicket.model.CompoundPropertyModel
match
The problem goes away when I remove the generics but then I also lose the
type checking.
Any suggestions?
Thanks,
Pieter
Why do you have a CompoundPropertyModel with a Model as its generic
type? I would
expect you to want a CompoundPropertyModelReport.
Given
class ReportWebModel implementsIModelReport {...}
ReportWebModel reportWebModel = ...;
IModelReport cpm = new CompoundPropertyModelReport(reportWebModel);
should succeed, because it matches the CPM constructor:
public class CompoundPropertyModelT {
public CompoundPropertyModel(IModelT model) {..}
}
Remember, Java Generics have to match exactly.
Respectfully,
Eric Jablow
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Wicket 6.5 CompoundPropertyModel constructor ambiguity
When I try to create the following model after migrating to wicket 6.5.0 new CompoundPropertyModelReportWebModel(reportWebModel) *where* ReportWebModel extends BaseWebModelReport *and* BaseWebModelT implements IModel My IDE (Intellij) shows no problem with type checking the code but when I try to compile it I get: java: reference to CompoundPropertyModel is ambiguous, both constructor CompoundPropertyModel(org.apache.wicket.model.IModelT) in org.apache.wicket.model.CompoundPropertyModel and constructor CompoundPropertyModel(T) in org.apache.wicket.model.CompoundPropertyModel match The problem goes away when I remove the generics but then I also lose the type checking. Any suggestions? Thanks, Pieter -- - - - - - - - - - - - - - - - - - - - - Pieter Claassen Musmato B.V. e: pieter.claas...@musmato.com t: +31 877 848259 w: http://musmato.com - - - - - - - - - - - - - - - - - - - -
Re: Wicket 6.5 CompoundPropertyModel constructor ambiguity
Well, from the looks of it it's a bit odd that you write new CompoundPropertyModelReportWebModel(reportWebModel) instead of new CompoundPropertyModelReport(reportWebModel) since ReportWebModel extends BaseWebModelReport The CPM constructor expects either a type literal or a model. In your case it is both, and you tell the CPM (through the generic type) that you will provide a type literal. Does your CPM have to be of type ReportWebModel? Met vriendelijke groet, Kind regards, Bas Gooren Op 25-1-2013 12:02, schreef Pieter Claassen: When I try to create the following model after migrating to wicket 6.5.0 new CompoundPropertyModelReportWebModel(reportWebModel) *where* ReportWebModel extends BaseWebModelReport *and* BaseWebModelT implements IModel My IDE (Intellij) shows no problem with type checking the code but when I try to compile it I get: java: reference to CompoundPropertyModel is ambiguous, both constructor CompoundPropertyModel(org.apache.wicket.model.IModelT) in org.apache.wicket.model.CompoundPropertyModel and constructor CompoundPropertyModel(T) in org.apache.wicket.model.CompoundPropertyModel match The problem goes away when I remove the generics but then I also lose the type checking. Any suggestions? Thanks, Pieter
