Thierry,
This fillter solution worked very nicely. We'll keep it in place for v
1.1.15 and remove it when we go to v 2.0.
Thank you very much.
Thierry Boileau wrote:
>
> Andrzej,
>
> the content negotiation algorithm implemented by the Restlet v1.1 is a
> bit lost when the preference "*/*" has a quality of 1.0.
> Since it loops over the the declared variants, it first calculates the
> score of the json variant. Since the "*/*" has a quality of 1, the
> computed score is the highest possible...
>
> One way is to systematically under valuate the "*/*" preference in a
> filter:
> class MyFilter extends Filter {
> @Override
> protected int beforeHandle(Request request, Response response) {
> List<Preference<MediaType>> prefs = request.getClientInfo()
> .getAcceptedMediaTypes();
> if (prefs != null && !prefs.isEmpty()) {
> for (Preference<MediaType> preference : prefs) {
> if (preference.getMetadata().equals(MediaType.ALL)) {
> preference.setQuality(0.1f);
> }
> }
> }
>
> return Filter.CONTINUE;
> }
> }
>
> NB : the conneg algorithm has been updated in the Restlet 2.0 trunk. It
> systematically sets a quality of 0.001.
>
> Best regards,
> Thierry Boileau
>
>
>> Thierry,
>>
>> That actually changed the request. Still get JSON though. Restlet
>> content
>> negotiates APPLICATION_JSON. How can we get APPLICATION_XML ?
>>
>>
>> Request:
>> GET /coralreef-resource/file/status?user=greg.savaged&_=1260974638188
>> HTTP/1.1
>> Accept: application/xml, text/xml, */*
>> Accept-Language: en-us
>> x-requested-with: XMLHttpRequest
>> UA-CPU: x86
>> Accept-Encoding: gzip, deflate
>> User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; SLCC1;
>> .NET
>> CLR 2.0.50727; .NET CLR 3.5.21022; .NET CLR 3.5.30729; .NET CLR
>> 3.0.30618)
>> Host: 10.1.10.166:8181
>> Connection: Keep-Alive
>> Authorization: Basic Z3JlZy5ob2NoYXJkOmJlcmljbw==
>>
>>
>>
>>
>> Thierry Boileau wrote:
>>
>>> Hi Andrzej
>>>
>>> could you use the "dataType" argument instead of the "beforeSend" one?
>>>
>>> $.ajax({type: 'GET',
>>> url: myUrl,
>>> success: onAjaxSuccess,
>>> error: onAjaxError,
>>> cache: false,
>>> dataType: "xml");
>>>
>>>
>>> Best regards,
>>> Thierry Boileau
>>>
>>>
>>>> Thierry,
>>>>
>>>> 1) Our JQuery Ajax call:
>>>>
>>>> $.ajax({
>>>> type: 'GET',
>>>> url: myUrl,
>>>> success: onAjaxSuccess,
>>>> error: onAjaxError,
>>>> cache: false,
>>>> beforeSend :
>>>> function(xhr){xhr.setRequestHeader('Accept','application/xml')}
>>>> });
>>>>
>>>> Will generate Accept header of "*/*, application/xml". We want
>>>> "application/xml".
>>>>
>>>> 2) Our Restlet 1.1.5
>>>>
>>>> @Override
>>>> public Restlet createRoot() {
>>>> // Create a router Restlet.
>>>> Router router = new Router(getContext());
>>>>
>>>> // Attach our routers.
>>>> router.attach("/test", HelloWorldResource.class);
>>>> router.attach("/file/status", FileStatusResource.class);
>>>>
>>>> return router;
>>>> }
>>>>
>>>>
>>>> public FileStatusResource(Context context, Request request, Response
>>>> response) {
>>>> super(context, request, response);
>>>>
>>>> // Read URI query strings.
>>>> Form form = request.getOriginalRef().getQueryAsForm();
>>>> if (form != null) {
>>>> setUser(form.getFirstValue("user", isIgnoreCase()));
>>>> setOriginalUri(form.getFirstValue("originalUri",
>>>> isIgnoreCase()));
>>>> setAction(form.getFirstValue("action", isIgnoreCase()));
>>>> }
>>>>
>>>> // Variants that our resource generates.
>>>> getVariants().add(new Variant(MediaType.APPLICATION_JSON));
>>>> getVariants().add(new Variant(MediaType.APPLICATION_XML));
>>>>
>>>> }
>>>>
>>>> @Override
>>>> public Representation represent(Variant variant) throws
>>>> ResourceException
>>>> {
>>>> Representation representation = null;
>>>>
>>>> // Validate request
>>>> if (StringUtils.isBlank(getUser())) {
>>>> log.debug("GET FileStatusResource bad user. ");
>>>> representation = representError(variant, new
>>>> ErrorMessage());
>>>>
>>>> getResponse().setStatus(Status.CLIENT_ERROR_BAD_REQUEST);
>>>> return representation;
>>>> }
>>>>
>>>> representation = representGet(this,variant);
>>>> return representation;
>>>> }
>>>>
>>>> public final Representation representGet(CoralReefResource crr, Variant
>>>> variant)
>>>> throws ResourceException {
>>>> Representation representation = null;
>>>>
>>>> log.debug("HTTP GET for : " +
>>>> variant.getMediaType().getName());
>>>> ...
>>>>
>>>>
>>>>
>>>>
>>>> Thierry Boileau wrote:
>>>>
>>>>
>>>>> Hello Andrzej,
>>>>>
>>>>> I wonder if the source cause if your issue is out there.
>>>>> Could you tell us how are built your resources? How do you send the
>>>>> request using jquery?
>>>>>
>>>>> Best regards,
>>>>> Thierry Boileau
>>>>>
>>>>>
>>>>>
>>>>>> Our Restlet resource server APPLICATION_JSON and APPLICATION_XML. A
>>>>>> JQuery
>>>>>> client, sets the Accept Type to "*/*, application/xml". So the
>>>>>> Restlet
>>>>>> negotiates that APPLICATION_JSON should be returned as expected.
>>>>>> However,
>>>>>> we
>>>>>> want APPLICATION_XML to be served. The problem is that we are unable
>>>>>> to
>>>>>> remove the "*/*" as the first Accept type in JQuery. JQuery seems to
>>>>>> tack
>>>>>> on
>>>>>> the "*/*" as an Accept Type to every request we send.
>>>>>>
>>>>>> Is there an elegant way in Restlet to filter the "*/*" values, e.g.
>>>>>> ALL
>>>>>> or
>>>>>> APPLICATION_ALL? We can certainly get the Accept Headers in Restlet
>>>>>> and
>>>>>> re-arrange the Accept list ourselves to "override" the Restlet
>>>>>> negotiation.
>>>>>> We are thinking of filtering, after Restlet negotiation, based on the
>>>>>> User-Agent header for this particular JQuery client, so as not to
>>>>>> "break"
>>>>>> the Restlet behaviour for other clients (which is what we expect.)
>>>>>>
>>>>>>
>>>>>>
>>>>> ------------------------------------------------------
>>>>> http://restlet.tigris.org/ds/viewMessage.do?dsForumId=4447&dsMessageId=2430776
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>> ------------------------------------------------------
>>> http://restlet.tigris.org/ds/viewMessage.do?dsForumId=4447&dsMessageId=2430802
>>>
>>>
>>>
>>
>>
>
> ------------------------------------------------------
> http://restlet.tigris.org/ds/viewMessage.do?dsForumId=4447&dsMessageId=2430822
>
>
--
View this message in context:
http://n2.nabble.com/MIME-Accept-Type-filter-tp4173789p4178248.html
Sent from the Restlet Discuss mailing list archive at Nabble.com.
------------------------------------------------------
http://restlet.tigris.org/ds/viewMessage.do?dsForumId=4447&dsMessageId=2430945
