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From Sergey Beryozkin <>
Subject Re: Need Help with Service parameter validations
Date Mon, 21 Nov 2011 18:13:41 GMT
On 21/11/11 17:27, Manisha Mahawar wrote:
> Hi All,
> I just started using CXF and had couple of doubts. I have a service which
> takes 5 parameters.
> public Response getSchedule(
>              @QueryParam("index") int index,
>              @QueryParam("resultsize") int resultSize,
>              @QueryParam("startdatetime") long startTime,
>              @QueryParam("enddatetime") long endTime,
>              @QueryParam("duration") int duration) {...}
> 1) All the parameters are not required but few of them are. Is there a way
> I can specify required or optional parameter using annotation in CXF?

That mostly affects the client side, but the only way for a client to 
know that it is a required parameter is to provide a custom WADL doc, 
though some additional annotation may be of help, may be it should be 
added in jaxrs 2.0 actually

> 2) I am getting "XML Parsing Error: no element found
> Location:
> http://localhost:8080/xboxEpgService/v1/listings/channels.xml?index=0&resultSize=200&duration=120&
> *startdatetime=*
> Line Number 1, Column 1:" error when I am trying to execute the above URL.
> it's only happens when I pass last parameter as blank.
> I noticed below warning in the logs.
> Nov 21, 2011 10:00:54 AM org.apache.cxf.jaxrs.impl.
> WebApplicationExceptionMapper toResponse
> WARNING: WebApplicationException has been caught : For input string: """
> I tried specifying @Default annotation but still not luck.
> Does anybody know what can I use to handle these kind scenarios, where
> nothing is being passed after parameter?
In this case it is an empty value which is being passed but a type 
'long' is specified. Long is better because it will be set to null if no 
query parameter is provided or to 0 if it's an empty parameter (ex, 

with long it should be just 0 I guess in all the cases, looks like a bug 
to me


> Any help would be appreciating.
> Manisha

Sergey Beryozkin

Talend Community Coders

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