Support for generic attribute query parameters

[dirk-ecker]

It would be nice if all entities would support generic query parameters corresponding with their result attributes or at least for selected attributes.

Here in example for the features entity

http:///helgoland-adapters-webapp/api/features?properties.domainId=Wupper-Talsperre_Ablauf,Wupper-Talsperre_Absperrbauwerk

gives me

{
        id: '7',
        properties: {
          label: 'Wupper-Talsperre, Ablauf',
          href: 'http://agro060.icg.kfa-juelich.de:1113/helgoland-adapters-webapp/api/features/7',
          domainId: 'Wupper-Talsperre_Ablauf'
        },
        type: 'Feature',
        geometry: { type: 'Point', coordinates: [Array], crs: [Object] }
      },
      {
        id: '71',
        properties: {
          label: 'Wupper-Talsperre, Absperrbauwerk',
          href: 'http://agro060.icg.kfa-juelich.de:1113/helgoland-adapters-webapp/api/features/71',
          domainId: 'Wupper-Talsperre_Absperrbauwerk'
        },

or am I missing something and this is already possible?

Another good alternative would be https://graphql.org, that supports a rich query language.

Thanks in advance for your response.

[CarstenHollmann]

You can already query the feature by their domainID using the features and matchDomainIds parameters. Here is an example request:

http:///helgoland-adapters-webapp/api/features?features=Wupper-Talsperre_Ablauf,Wupper-Talsperre_Absperrbauwerk&matchDomainIds=true

[CarstenHollmann]

This is supported in the Helgoland-API version 2.x and 3.x.

[dirk-ecker]

Okay, we use 3.5 so this should work. How is this done in the source? I can find isMatchDomainIds, but only the declaration of the method, not the use. Seems to be generic magic or ...?

[dirk-ecker]

My colleague found out that this does not work because the parameter is converted to lowercase. So it searches for wupper-talsperre_ablauf,wupper-talsperre_absperrbauwerk instead of Wupper-Talsperre_Ablauf,Wupper-Talsperre_Absperrbauwerk.

Ist this intended or a bug?

[CarstenHollmann]

This is intended but it seems that there is an issue in the used sensorweb-server-dao-impl version. I have tested the current version and with this the filtering on the domainIds works.

[CarstenHollmann]

There is a new Sensor Web Server Helgoland Adapters version available where the filtering on domainIds works.

[dirk-ecker]

@CarstenHollmann Thank you.