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Data Storage - piveau-hub#

Hub is the central (meta) data management component of piveau. It employs a triplestore as primary database and offers first-class support for DCAT-AP.

Features:

  • DCAT-AP RESTful API
  • URI management
  • Access control with Keycloack
  • Controlled vocabulary integration
  • Single-Page-Application Frontend

Technology:

  • Vert.x Java Framework
  • Apache Jena
  • Elasticsearch
  • Virtuoso Triplestore
  • Vue.js

Demos:

F.A.Q.#

Questions and Answers:

  1. Is there no validation during data submission via the API?
    Currently, there is no validation of mandatory fields during data submission via the API.

  2. Is there a way to patch records via the API instead of submitting the entire dataset for updates?
    Handling updates in the RDF world is complex. It is often unclear whether a property should be replaced or added, especially for properties that can accept multiple values. This ambiguity makes straightforward patching challenging.

  3. How can we trigger re-indexing in the search engine?
    To trigger re-indexing of the entire repository or a specific dataset, you can use a command in the Hub-Repo CLI. For example, you can execute the command index -v my-catalogue to re-index one or more catalogs.