IRI Generator

This project servers for generating IRIs using a predefined template based on existing RDF data.

Use-case: Renaming temporary IRIs generated on the front-end to the proper ones

Having an RDF resource with an IRI:

@prefix eczm: <https://example.cogni.zone/model#> .
https://resource/2 a eczm:Two ; 
    eczm:year "2021" ;
    eczm:sequence "0005" .

created on the frontend, we want to generate the IRI https://example.cogni.zone/2021/0005 based on:

• a template #{[baseUri]}/#{[year]}/#{[sequence]}
• a baseUri of https://example.cogni.zone
• a SPARQL query supplying the values for year and sequence

PREFIX eczm: <https://example.cogni.zone/model#> 
SELECT ?year ?sequence {
  <#{[uri]}> eczm:year ?year ;
  eczm:sequence ?sequence
}

where #{[uri]} points to the original IRI of the resource (https://resource/2).

To pick the correct template for the given IRI another SPARQL query is used:

PREFIX eczm: <https://example.cogni.zone/model#> .
SELECT ?uri { ?uri a eczm:Two }

Dependencies

The project has been extracted from Asquare and the following classes are either copies of subset of their respective Asquare counterparts:

• Json5Light.java
• SpelService.java
• TemplateService.java
• InternalRdfStoreService.java
• RdfStoreServiceAPI.java
• JenaQueryUtils.java
• JenaResultSetHandler.java