In the release notes of OpenUI5 it says that since 1.72 server side pagination is supported.
https://openui5.hana.ondemand.com/1.72.1/#/topic/25e532617b7f4b9bad842757324151ed.html
But I can't see any reference to it, how it is used, how it is activated.
My questions are in particular:
Must the $metadata contain anything special to enable that?
How to force UI5 to send a $skiptoken URL parameter
Thanks in advance
Related
I have Elevated access to the Twitter API V2, and I am working with the API in Postman to search for recent Tweets containing a keyword. I’d like to be able to add a further query parameter to only return Tweets that have a geolocation associated with them. To do this, I am adding the has:geo parameter, as shown in the below URL call:
https://api.twitter.com/2/tweets/search/recent?query=dogs lang:en -is:retweet has:geo
However, this is returning with the following error:
There were errors processing your request: Reference to invalid operator 'has:geo'. Operator is not available in current product or product packaging. Please refer to complete available operator list at https://developer.twitter.com/en/docs/twitter-api/enterprise/rules-and-filtering/operators-by-product.
From my understanding, of this page in the documentation, the has:geo search operator is only available to accounts with Elevated Access to the V2 API (which I have).
If anyone has any suggestions of how I can get around this issue, that would be much appreciated please.
If you check the detail on that page, it further explains:
Twitter API v2
- **Essential**: Available when using any Project
- **Elevated**: Available when using a Project with *Academic Research access*
I agree that it is not sufficiently clear on that page, unless you re-read it (because "Elevated" and "Academic Research" are technically different access levels for your account).
The answer is that in order to use that search operator, you would need to have Academic Research access, not just Elevated access.
Going through the documentation for the Sharepoint API (located here: http://msdn.microsoft.com/en-us/library/office/dn605900(v=office.15).aspx) I am trying to figure out how to select chunks of documents. I was expecting $skip to work, as it is implied that most OData functionality should be present, but this doesn't work. I also can't figure out whether or not $skiptoken is a valid query param. It's listed in the documentation near the bottom (without further explanation), but I can't coax the proper result out of it so far.
If somebody knows about $skip or $skiptoken or another method available for getting chunked responses back, help with this problem would be great!
EDIT: to clarify, things like API_URL/files?$orderby=url&$top=5 work, but things like API_URL/files?$orderby=url&$skip=50 do not. However, I have just found a 'next' URL in the response which appears to provide server-side paging support. I'll try to figure out the use of $skiptoken from here.
The OData V4 protocol has specified (referencing 11.2.5.7 Server-Driven Paging) that:
OData services may use the reserved system query option $skiptoken when building next links. Its content is opaque, service-specific, and must only follow the rules for URL query parts.
OData clients MUST NOT use the system query option $skiptoken when constructing requests.
Thus, the implementation of the O365 SharePoint API that it publishes $skiptoken as a query option that the client should use for excluding first few items in the queried collection is a violation of the protocol. The client should use $skip for such scenario. But it seems from the O365 spec you attached that $skip is not implemented.
If you query a entity set of the O365 service and the response payload contains a next link (a #odata.nextLink annotation in the response JSON object), then it indicates that the service has server-side paging for the entity set. Typically the next link would be a URL containing the $skiptoken query option such as http://host/service/entityset?$skiptoken=n that the client can use for getting the next page.
The Gmail iOS API under the hood appears to be creating 'POST' requested with a payload that specifies an action. So for example if I want to get a single message by ID, I would expect (at least since the documentation on the API specifies it) that I would create a GET request with the correct URL schema. Instead the Gmail iOS implementation does not and utilizes more of an RPC approach. Unfortunately this means all POST requests have a default timeout of 240 seconds and cannot be changed, apparently an iOS bug/weird implementation. I can create a timer and cancel the request but why not make the implementation RESTful?
Yes, this is a quark with the Google iOS client libraries in general--they do not follow the standard REST semantics of the APIs like all the other client libraries use. I imagine due to some limitation in iOS. In any case, https://code.google.com/p/google-api-objectivec-client/ would be the best place to read more about it, discuss and file bugs. (Not specific to the gmail-api.)
The library was written to create JSON-RPC requests because those have always supported a batch request model. A mechanism for batch REST requests was added much later to Google's JSON API servers.
The timeout issue on POSTs was resolved in iOS 6, according to discussions online like this.
The project site does have links to the library's discussion group and issue tracker.
I have this site:
https://acad.unoesc.edu.br/academico/login.jsp
And I want to put info in the fields values and submit then, to get the next page and navigate in that site. Thats because I want to create an android app or something like that. Im using lua in first case, with luasocket(http).
I know that the input has its names, but I dont know how to set then and send then to the server. If someone can help me with this.
Thank you.
You can use POST method with luasocket. See the official documentation and a detailed example in this SO answer.
Since you seem to be doing authentication, you'll probably need to save the cookie value returned to you as part of the login response and then pass that cookie back to the server (otherwise your subsequent requests will fail as the server will reject those requests as non-authenticated).
Since you are sending this over https, you'll need to use LuaSec, which provides ssl.https module as replacement for the http module that luasocket provides. You may check my blog post for some example of how this can be done.
How do I play a track from a SoundCloud URL, which, for example, I got from the xml response from a query
<stream-url>https://api.soundcloud.com/tracks/31164607/stream</stream-url>
I should have thought that it would have been as easy as:
https://api.soundcloud.com/tracks/31164607/stream&client_id=my_client_id
yet I get
<error>401 - Unauthorized</error>
All I want to do is consume it in a Silverlight MediaElement, so all I need is set some url to the MediaElement's Source property.
I've checked an application that I wrote about 2 years ago, and THEN, accessing the stream url was as easy as this for a public track:
http://api.soundcloud.com/tracks/18163056/stream&consumer_key=MY_CONSUMER_KEY
however this no longer seems to work.
For example, all I had to do then in C# was:
MediaElement me = new MediaElement();
me.Source= new Url("http://api.soundcloud.com/tracks/18163056/stream&consumer_key=MY_CONSUMER_KEY");
me.Play();
Any hints would be appreciated.
I had a reply on a Microsoft forum that seems to imply that SoundCloud might not be possible to stream to Windows 8 Metro devices without consuming the whole stream before playback starts - which is quite worrying and would seem to imply that to make authentication possible, it would have to be done entirely in the url querystring insterad of using the header:
(The following reply is the answer to the following question: 'I am able to access an audio stream by http using the MediaElement, however I need to access it via https in which I need to add the oAuth info to the header of the initial request.
How is this done when using a MediaElement, and if it cannot be done, what is the workaround for consuming an audio feed in Metro 8 that requires header authentication to stream?')
"Direct access to the underlying network stream is not currently permitted by the MediaElement. Because of this there is currently no way to modify the header of the HTTP request to include any additional authentication information. That said, you do have control over the URL. You could theoretically setup an HTTP proxy service that translated the HTTP GET request parameters into the necessary oAuth credentials. Keep in mind that this is just a theoretical workaround. You may find different behavior in practice. Another theoretical workaround would be to handle the oAuth yourself via a raw stream socket and pass the retuned media data to the MediaElement via "Set Source" and a "Random Access Stream". Please keep in mind that this method has major limitations. in order to use a "Random Access Stream" with the ME you need to make sure all of the data is available before passing it to the ME."
The proxy service is not scalable for an application that is merely distributed for free as every stream would need to come via the proxy. And the raw stream socket, although getting around this, would mean that playback could not start until the whole file had downloaded - and this goes against all current UX (User Experience) guidelines.
So once again, if anyone has any tips, or info about how the whole authentication thing can be achieved in a querystring instead of using headers, I'd appreciate it!
I'm a little confused about whether you're referring to a public or a private track? If it's a public track, then you shouldn't need to send any authentication information, just your client id.
When I request https://api.soundcloud.com/tracks/31164607/stream?client_id=YOUR_CLIENT_ID then I get a 302 redirect to the proper mp3 stream.
Remember, adding parameters to a URL must start with a ? not &. This could (more than likely) be the reason why you are getting a 401 (SC is not picking up the client_id).
After authentication the link like this
http://api.soundcloud.com/tracks/103229681/stream?consumer_key=d61f17a08f86bfb1dea28539908bc9bf
is working fine. I am using Action Script.
I'm following up on Tom's reply because he calls attention to url character specificity. My HTTP requests randomly started failing today, and I was prefacing my client_Id with a ?. As soon as I changed that single ? to &, it started working. So in my case, SC wasn't picking up my client_Id because I used the wrong character. I think depending on where in the request we're talking about specifically, it's worth noting that differences between ? and & do make a difference.