How to get the POIs using the Remote API?

1Topic by zorrow

27/10/2012 17:37:13How to get the POIs using the Remote API?

zorrow
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From: Montréal, Québec
Registered: 31/08/2012
Posts: 23
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Topic: How to get the POIs using the Remote API?

Hello again,

I'm trying to get the list of POIs from my site via the Remote API, using my user/password.

Again, I have found no example in the API documentation, but after reading the code of the page of my site, I guessed the POIs are resources (or so I think), so started using the "avl_resource" type. The call I'm making looks like this (it's in C#):

       private static string WialonGetPOIs(string sid)
        {
            string urlGetPOIs =
                "http://hosting.wialon.com/wialon/ajax.html?svc=core/update_data_flags&sid=" + sid +
                "&params={" +
                    "\"spec\":[" +                    /* array of requests to the server */
                    "{" +
                        "\"type\":\"type\"," +        /* get objects by type */
                        "\"data\":\"avl_resource\"," +    /* type is set to "avl_resource" (does that get the POIs?) */
                        "\"flags\":1," +            /* get common information */
                        "\"mode\":0" +                /* set flags */
                    "}" +
                    "]" +
                "}";
 
            return (new WebClient()).DownloadString(urlGetPOIs);
        }

With that call I do get some results, but they seem weird. Firstly, there's only one element in the returned JSON string, while I have four POIs in my site. Also, the resource I'm getting is visibly none of the POIs registered in my site, as the returned name is totally different. I experimented with some flag values, quite blindly, but nothing helpful came out this far.

So, can you please help me to get the list of POIs and their positions using the Remote API?

Thanks in advance!

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2Reply by shal

28/10/2012 11:12:42How to get the POIs using the Remote API?

shal
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Registered: 10/07/2008
Posts: 3,361
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Re: How to get the POIs using the Remote API?

zorrow, POIs are contained in resources, so you need to search for avl_resource items and request data flags with bit 0×00000800, e.g. flags=0×00000801 in your sample request above. Then per each returned resource you will have collection of POIs with base information in it. To get more POI information you can use http://docs.gurtam.com/en/hosting/sdk/w … t_poi_data method (next step).

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3Reply by NTS

28/10/2012 17:10:48How to get the POIs using the Remote API?

NTS
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Registered: 26/07/2012
Posts: 36
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Re: How to get the POIs using the Remote API?

Hi Shal,

in the example above of Zorrow, why you told him to use flags=0×00000801 instead of 0×00000800 ?

Can you show me and add correction as necessary at the right place in the script of Zorro to have as return from the API , all informations of all POI we have for this specific account. That we help us to debug this issue ! and to pass to the next step.

Thanks a lot.

private static string WialonGetPOIs(string sid)
{
string urlGetPOIs =
"http://hosting.wialon.com/wialon/ajax.h … s&sid=" + sid +
"&params={" +
"\"spec\":[" + /* array of requests to the server */
"{" +
"\"type\":\"type\"," + /* get objects by type */
"\"data\":\"avl_resource\"," + /* type is set to "avl_resource" (does that get the POIs?) */
"\"flags\":1," + /* get common information */
"\"mode\":0" + /* set flags */
"}" +
"]" +
"}";

return (new WebClient()).DownloadString(urlGetPOIs);
}

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4Reply by shal

28/10/2012 20:00:04How to get the POIs using the Remote API?

shal
Gurtam
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Registered: 10/07/2008
Posts: 3,361
User Karma: 496

Re: How to get the POIs using the Remote API?

NTS wrote:

in the example above of Zorrow, why you told him to use flags=0×00000801 instead of 0×00000800

Hi NTS, it is 0x1 /BASE/ + 0x800 /POI/

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5Reply by NTS

28/10/2012 20:51:22How to get the POIs using the Remote API?

NTS
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Registered: 26/07/2012
Posts: 36
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Re: How to get the POIs using the Remote API?

Hi Shal,

About this script would you tell me what we need to add to received all POI and all informations for those POI :

We have tried few things wiht out success !

Thanks

private static string WialonGetPOIs(string sid)
{
string urlGetPOIs =
"http://hosting.wialon.com/wialon/ajax.h … s&sid=" + sid +
"&params={" +
"\"spec\":[" + /* array of requests to the server */
"{" +
"\"type\":\"type\"," + /* get objects by type */
"\"data\":\"avl_resource\"," + /* type is set to "avl_resource" (does that get the POIs?) */
"\"flags\":1," + /* get common information */
"\"mode\":0" + /* set flags */
"}" +
"]" +
"}";

return (new WebClient()).DownloadString(urlGetPOIs);
}

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6Reply by zorrow

29/10/2012 14:53:07How to get the POIs using the Remote API?

zorrow
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From: Montréal, Québec
Registered: 31/08/2012
Posts: 23
User Karma: 0

Re: How to get the POIs using the Remote API?

I tried the 0x801 flag. It works! It's also returning all the names and positions for the POIs, so I get all what I want in just one shot.

The returned string is however kind of weird, as I was expecting an array of POIs, but it's actually just one element with a comma-separated string member containing all the POIs. I will have to parse it my side, but that's no big deal.

In any case, this unblocks me big time as I got all what I wanted.

Huge thanks!

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