On 05/06/2013 20:48, Luciano Resende wrote:
> On Tue, Jun 4, 2013 at 6:52 AM, Francesco Chicchiriccò
> <ilgrosso@apache.org <mailto:ilgrosso@apache.org>> wrote:
>
> On 04/06/2013 10:36, Francesco Chicchiriccň wrote:
>
> Hi all,
> I am currently evaluating Wink for a new project.
>
> I have been playing around with some samples and it seems
> linear to me.
> I am not completely convinced, however, of async usage; this
> is how I have managed to get it working:
>
> AsyncHttpClient asyncHttpClient = new AsyncHttpClient();
> RestClient client = new RestClient(new
> AsyncHttpClientConfiguration(asyncHttpClient));
>
> Resource resource =
> client.resource("http://services.odata.org/v3/(S(sn4zeecdefwvblk2xxlk425x))/OData/OData.svc/Products
> <http://services.odata.org/v3/%28S%28sn4zeecdefwvblk2xxlk425x%29%29/OData/OData.svc/Products>");
>
> AtomFeed feed =
> resource.contentType("application/atom+xml").accept("application/atom+xml").get(AtomFeed.class);
> asyncHttpClient.close();
>
> for (AtomEntry entry : feed.getEntries()) {
> System.out.println(entry.getTitle().getValue());
> }
>
> Is this the correct usage? Isn't there any way to get
> something like Future<AtomFeed> instead?
>
> Moreover, I was also looking for a way to get an InputStream
> out of a response, to delay processing: is this possible?
>
>
> I guess I've found (this seems to work):
>
> RestClient client = new RestClient(new
> ApacheHttpClientConfig(new DefaultHttpClient()));
>
> Resource resource =
> client.resource("http://localhost:8080/Northwind/Northwind.svc/Categories(1)
> <http://localhost:8080/Northwind/Northwind.svc/Categories%281%29>");
>
> ClientResponse response =
> resource.accept(MediaType.APPLICATION_ATOM_XML).get();
> InputStream is = response.getEntity(InputStream.class);
> System.out.println("********* " + response.getStatusCode());
> StringWriter writer = new StringWriter();
> IOUtils.copy(is, writer);
> System.out.println(writer.toString());
>
> I have also been able to create an entry (e.g. POST) only
> providing InputStream: definitely nice.
>
> I'll keep investigating for the Future<T> stuff...
>
>
> It would be great if you could provide some extra documentation on our
> wiki or any enhanced examples.
Hi Luciano,
what kind of documentation are you thinking about? Could you also
provide some coordinate under which I should create a new page / update
an existing page? My ASF confluence userid is 'ilgrosso', BTW.
About the Future<T> investigation, I've developed a quick example using
Commons HttpAsyncClient 4.0-beta4 [1]: it looks more like a hack, but it
works more or less this way:
RestClient client = new RestClient(new
ApacheHttpAsyncClientConfig());
Resource resource =
client.resource("http://services.odata.org/v3/(S(sn4zeecdefwvblk2xxlk425x))/OData/OData.svc/Products");
FutureClientResponse response = (FutureClientResponse)
resource.accept(MediaType.APPLICATION_ATOM_XML).get();
System.out.println("XXXXXXXXXXX " + response.isDone());
AtomFeed feed = response.get().getEntity(AtomFeed.class);
e.g. FutureClientResponse implements both Future<ClientResponse> and
ClientResponse
I am not fully satisfied of this result (explicit cast to
FutureClientResponse, for example...) but it proves at least that it
could be done.
A possible cleaner extension is to add a new Resource#get() (similar to
what CXF does [2]), but I am not familiar at all with Wink's internals...
As soon as I found enough spare time, I'll push my sample to github.
Keep you posted.
Regards.
[1] http://hc.apache.org/httpcomponents-asyncclient-dev/
[2]
http://cxf.apache.org/javadoc/latest/org/apache/cxf/jaxrs/client/WebClient.html#get(javax.ws.rs.client.InvocationCallback)
--
Francesco Chicchiriccò
ASF Member, Apache Syncope PMC chair, Apache Cocoon PMC Member
http://people.apache.org/~ilgrosso/
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