Triplestore Indexer

This module provide a system to get the Json-LD representation (which is established from
JSON-LD REST Services module) of any content type and taxonomy in Drupal and index that into Blazegraph.

Installation:

1. Server side: Setup a Tomcat Server with Blazegraph installed as Triplestore. Please see the installation guide.
   • Setup authentication for Blazegraph (optional)
     Please see the setup guide.
2. Client side: a Drupal 8 or 9 website setup and download the following modules:
   • JSON-LD REST Services module
   • Advanced Queue
   • Rest UI
3. Enable serialization for JSON-LD presentation for content nodes and taxanomy by visit /admin/config/services/rest or Configuration > Web Services > REST (as Figure 2 above)
4. Setup RDF mapping for your content types and taxonomy at /admin/config/development/configuration. Please see the instruction

Configuration

• Enable the module by Extend > Custom or using drush en triplestore_indexer
• Go to Configuration > System > Triplestore Indexer.
• Fill out the configuration form (Figure 1 above)
  • Server URL: Blazegraph server URL, eg. http://example.com:8080/blazegraph or http://example.com:8080/bigdata/
  • Namespace: see detail at here.
  • Method of authentication:
    • Basic/Digest: see the setup guide. If your Tomcat server has an authentication enabled, enter username and password.
    • None: please proceed to the next step.
  • Advanced Queue: when a node or a taxonomy term is created, updated, or deleted, the indexing operation will be added to a queue as a job which can be configured to run eventually with Cron job, Drupal Console command, or an Advanced Queue Runner. You can create a separated queue if needed.