Парсинг JSON в JSON Linked Data с использованием Hydra Java

// Open a valid json(-ld) input file
InputStream inputStream = new FileInputStream("input.json");
// Read the file into an Object (The type of this object will be a List, Map, String, Boolean,
// Number or null depending on the root object in the file).
Object jsonObject = JsonUtils.fromInputStream(inputStream);
// Create a context JSON map containing prefixes and definitions
Map context = new HashMap();
// Customise context...
// Create an instance of JsonLdOptions with the standard JSON-LD options
JsonLdOptions options = new JsonLdOptions();
// Customise options...
// Call whichever JSONLD function you want! (e.g. compact)
Object compact = JsonLdProcessor.compact(jsonObject, context, options);
// Print out the result (or don't, it's your call!)
System.out.println(JsonUtils.toPrettyString(compact));

@POST
//  @Produces("application/json-ld")
//  @Consumes(MediaType.TEXT_PLAIN)
    public String parseJSONLD(String text) throws IOException, JsonLdError 
    {
        Object jsonObject = JsonUtils.fromString(text);
        // Create a context JSON map containing prefixes and definitions
         Map<Object, Object> context = new HashMap<Object, Object>();
         context.put("@vocab", "http://schema.org");
        // Customise context...
        // Create an instance of JsonLdOptions with the standard JSON-LD options
        JsonLdOptions options = new JsonLdOptions();
        
        // Customise options...
        // Call whichever JSONLD function you want! (e.g. compact)
        Map<String, Object> compact = JsonLdProcessor.compact(jsonObject, context, options);
        
        // Print out the result (or don't, it's your call!)
        return JsonUtils.toPrettyString(compact);
    }