[Fiware-tech-help] Fetch Data From Orion Context Broker

[Miguel Jimenez]

Hi Prashant,

Regarding Data Table Viewer Widget, we have not connected directly to NGSI
data, but to CKAN data (using CKAN Resource Selector
<https://github.com/wirecloud-fiware/ckan-resource-selector-widget> widget,
for example). Regarding NGSI it would require an operator generating the
data set structure as defined in Data Table Viewer documentarion
<https://github.com/Wirecloud/data-table-viewer-widget/blob/master/src/doc/userguide.md>
.

Best regards,

───────────────────────────
Miguel Jiménez Gañán, PhD.
  Dpto. Lenguajes y Sistemas Informáticos e Ingeniería de Software
  Escuela Técnica Superior de Ingenieros Informáticos
  Universidad Politécnica de Madrid (UPM)
───────────────────────────

On Sun, May 20, 2018 at 7:37 AM, Prashant Chauhan1 <
PC00474884 at techmahindra.com> wrote:

> HI Alvaro,
>
>
>
> Yes, Map issue has been resolved.
>
> But still waiting for inputs on Table Viewer widget Issue i.e. Table
> Viewer widget requires input points as ‘Data and Structures’, is there any
> available operator to fetch or create a dataset for this table viewer
> widget.
>
> Thanks and Regards,
>
>
>
> *Prashant Chauhan*|Software Engineer
> [image: cid:image001.png at 01D3264E.9EB73DF0]| NSEZ, NOIDA
>
>
>
>
>
>
>
> *From:* Álvaro Arranz [mailto:aarranz at ficodes.com]
> *Sent:* Friday, May 18, 2018 9:22 PM
> *To:* Prashant Chauhan1 <PC00474884 at TechMahindra.com>
> *Cc:* mjimenez at fi.upm.es; fiware-tech-help at lists.fiware.org; Krishan
> Babbar <KB00449283 at TechMahindra.com>; Yugal Kishor Mullick
> <YM00106030 at TechMahindra.com>; Francisco de la Vega <fdelavega at ficodes.com
> >
> *Subject:* Re: [Fiware-tech-help] Fetch Data From Orion Context Broker
>
>
>
> Dear Prashant,
>
>
>
> any progress? Did you were able to fix those problems?
>
>
>
> Please, do not hesitate to contact us if you continue having problems.
>
>
>
> Best Regards,
>
> Álvaro
>
> [image: Image removed by sender. FICODES]FUTURE INTERNET CONSULTING &
> DEVELOPMENT SOLUTIONS S.L <http://www.ficodes.com/>
>
>
>
> *Álvaro Arranz García*
>
>
>
> Chief Executive Officer <http://ficodes.com/>
>
>
>
> aarranz at ficodes.com
>
>
>
> +34 669 079 467
>
>
>
> www.ficodes.com
>
>
>
>
>
>
>
> El mié., 16 de may. de 2018 a la(s) 11:40, Álvaro Arranz (
> aarranz at ficodes.com) escribió:
>
> Hi again,
>
>
>
> Regarding this:
>
>
>
> I’ve used the same settings for the URL of ngsi-source operator but
> getting the below error in the logs.
>                 Error creating subscription in the context broker server:
> The server returned an invalid json structure.
>
>
>
> This probably has something to do with some problematic characters inside
> data values. Are you using new line characteres (e.g. «\n») inside data
> values?, In that case, you should escape them, because the orion context
> broker has a bug and does not encode them correctly, returning an invalid
> JSON response. See this ticket
> <https://github.com/telefonicaid/fiware-orion/issues/2938> for more
> details.
>
>
>
> Best regards,
>
> Álvaro
>
> [image: Image removed by sender. FICODES]FUTURE INTERNET CONSULTING &
> DEVELOPMENT SOLUTIONS S.L <http://www.ficodes.com/>
>
>
>
> *Álvaro Arranz García*
>
>
>
> Chief Executive Officer <http://ficodes.com/>
>
>
>
> aarranz at ficodes.com
>
>
>
> +34 669 079 467
>
>
>
> www.ficodes.com
>
>
>
>
>
>
>
> El mar., 15 de may. de 2018 a la(s) 13:57, Prashant Chauhan1 (
> PC00474884 at techmahindra.com) escribió:
>
> Hi Miguel,
>
>
>
> Thanks for your support.
>
>
>
> I’ve used the same settings for the URL of ngsi-source operator but
> getting the below error in the logs.
>
>                 Error creating subscription in the context broker server:
> The server returned an invalid json structure.
>
> Also I have used this configuration before, but could not receive any
> result.
>
> Please help me resolve this over WebEX call, it will just take 15 minutes
> of your time.
>
> Also, PFA the ngsi-settings.PNG file for your reference.
>
>
>
>
>
> *Error! Filename not specified.* <http://www.techmahindra.com/>
>
>
>
> *Prashant Chauhan*
>
>
>
> Software Engineer
>
>
>
> CIESIOT
>
> Noida-NSEZ
>
>
>
> Mobile : +919582019151
>
>
>
> PC00474884 at techmahindra.com
>
>
>
>
>
> We believe
>
>
>
>
>
>
>
> *Error! Filename not specified.* <http://online.wsj.com/ad/inthefuture/>
>
>
>
>
>
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>
>
>
>
>
>
> *From:* mjimenez at conwet.com <mjimenez at conwet.com> *On Behalf Of *Miguel
> Jimenez
> *Sent:* Tuesday, May 15, 2018 3:34 PM
> *To:* Prashant Chauhan1 <PC00474884 at TechMahindra.com>
> *Cc:* fiware-tech-help at lists.fiware.org; Krishan Babbar
> <KB00449283 at TechMahindra.com>; Álvaro Arranz <aarranz at ficodes.com>; Yugal
> Kishor Mullick <YM00106030 at TechMahindra.com>; Francisco de la Vega <
> fdelavega at ficodes.com>
> *Subject:* Re: [Fiware-tech-help] Fetch Data From Orion Context Broker
>
>
>
> Hi Prashant,
>
>
>
> That operator does require 2 general configs regarding URLs of the CB:
>
>    - URL of the Context Broker, that would be the one you indicate
>    http://130.206.117.237:1026 <http://130.206.117.237:1026/>
>    - URL of a proxy (so as to receive asynchronous notifications for
>    subscriptions), that you can leave by default on a global instance running
>    at https://ngsiproxy.lab.fiware.org or deploying your own one.
>
> Besides this information, some other configs are required to address
> specific information. You can indicate an ID pattern or a query, or you can
> simply indicate the type of the desired entities, plus the FIWARE service
> (tenant) required for accessing them, and the FIWARE service path where
> that entities have been uploaded inside the CB. In case you want
> subscriptions (through the proxy), and not only an initial query, you have
> to indicate, coma sepparated, the list of attributes whose change would
> fire a new asinchronous notifications (a new entity with that attributes
> does also fires this).
>
>
>
> And appart from that, you would want to consume the information. Operators
> Entity 2 PoI (generic, does require a setting to indicate the attribute to
> search for location information and an icon) or FIWARE data model 2 PoI
> (based on FIWARE data models, fully automatic handling dozens of different
> icons) does generate points of interest so as to easily be imported in a
> map (Open Layers map is simpler since it does not require google api kkey).
> You can download and analyze their code, in case you want to learn how to
> handle notification events, but they are simply json objects with the data
> (full query or individual objects).
>
>
>
> Let me get more detailed information on the Table Viewer widget, since
> I've not used it for long. I'll will come with further details.
>
>
>
> Best regards,
>
>
> ───────────────────────────
> Miguel Jiménez Gañán, PhD.
>   Dpto. Lenguajes y Sistemas Informáticos e Ingeniería de Software
>   Escuela Técnica Superior de Ingenieros Informáticos
>   Universidad Politécnica de Madrid (UPM)
> ───────────────────────────
>
>
>
> On Mon, May 14, 2018 at 12:18 PM, Prashant Chauhan1 <
> PC00474884 at techmahindra.com> wrote:
>
> Hi,
>
>
>
> I’m trying to use the ‘*ngsi-source-operator*’ to fetch data from ‘*Orion
> context broker*’ and trying to populate that data on the Map Widget.
>
> My Orion instance is running @ http://130.206.117.237:1026 and I’m using
> the global instance of wirecloud.
>
> Please suggest me, what setting should I use for NGSI-source-operator in
> order to fetch data.
>
> Also while creating subscriptions, which URL should I use to send the
> notifications.
>
>
>
> Another query is regarding Table Viewer widget, as it requires input
> points as ‘Data and Structures’, is there any available operator to fetch
> or create a dataset for this table viewer widget.
>
>
>
>
>
> *Error! Filename not specified.* <http://www.techmahindra.com/>
>
>
>
> *Prashant Chauhan*
>
>
>
> Software Engineer
>
>
>
> CIESIOT
>
> Noida-NSEZ
>
>
>
> Mobile : +919582019151
>
>
>
> PC00474884 at techmahindra.com
>
>
>
>
>
> We believe
>
>
>
>
>
>
>
> *Error! Filename not specified.* <http://online.wsj.com/ad/inthefuture/>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
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