Hi Johannes,
I just fixed it.
The problem was that the REST call returned and Array of DataLakeMeasure as
JSON-LD.
To do that you have to add asContainer:
public Response getAllInfos() {
List<DataLakeMeasure> result = this.dataLakeManagement.getInfos();
return ok(asContainer(result));
}
I’ll continue to work on the new data explorer and push the latest version
later.
Philipp
> On 6. Mar 2020, at 17:02, Dominik Riemer <[email protected]> wrote:
>
> Hi Johannes,
>
> did you try to call the constructor defined in UnnamedStreamPipesEntity (just
> call the empty contructor with super() in all constructors of
> DataLakeMeasure)?
>
> Dominik
>
> -----Original Message-----
> From: Johannes Tex <[email protected]>
> Sent: Friday, March 6, 2020 2:00 PM
> To: [email protected]
> Subject: [Help wanted] Jslod Serialization
>
> Hello everyone,
>
> the REST endpoint for receiving the information about the stored data in the
> data lake ("../datalake/info") is currently serializing the class
> 'DataLakeMeasure' (org.apache.streampipes.rest.impl.datalake.DataLakeMeasure)
> in JSON, but it should be JSONLD.
>
> I tried to change the serialization, but it does not work. I always get the
> error:
> "No identifier was found for
> [org.apache.streampipes.model.datalake.DataLakeMeasure@3165a907]! The
> instance should implement Identifiable, have one or more properties annotated
> with @RdfId, or have an id function provided to the mapper.".
> The 'DataLakeMeasure' extends the 'UnnamedStreamPipesEntity'
> (org.apache.streampipes.model.base.UnnamedStreamPipesEntity), which has a
> propertety annotated with @RdfId.
>
> Someone has an idea, what could be the problem? See Branch [STREAMPIPES-79]
>
>
> Regards
> Johannes
>
>
