Linked Data Fragments Server - HDT Datasource

This module contains a HDT datasource for the Linked Data Fragments server. It allows HDT files to be loaded.

This package is a Linked Data Fragments Server module.

Usage in @ldf/server

This package exposes the following config entries:

• HdtDatasource: An HDT datasource that requires at least one hdtFile field. Should be used as @type value.
• hdtFile: Refers to an absolute or relative file location of an HDT file. Should be used as key in a HdtDatasource.
• hdtExternal: An optional flag that can be set to true, which will make HDT queries go via an external process. Should be used as key in a HdtDatasource.

Example:

{
  "@context": "https://linkedsoftwaredependencies.org/bundles/npm/@ldf/server/^3.0.0/components/context.jsonld",
  "@id": "urn:ldf-server:my",
  "import": "preset-qpf:config-defaults.json",

  "datasources": [
    {
      "@id": "urn:ldf-server:myHdtDatasource",
      "@type": "HdtDatasource",
      "datasourceTitle": "My HDT file",
      "description": "My dataset with an HDT back-end",
      "datasourcePath": "myhdt",
      "hdtFile": "path/to/file.hdt"
    }
  ]
}

Usage in other packages

When this module is used in a package other than @ldf/server, then the JSON-LD context https://linkedsoftwaredependencies.org/contexts/@ldf/datasource-hdt.jsonld must be imported.

For example:

{
  "@context": [
    "https://linkedsoftwaredependencies.org/bundles/npm/@ldf/core/^3.0.0/components/context.jsonld",
    "https://linkedsoftwaredependencies.org/bundles/npm/@ldf/preset-qpf/^3.0.0/components/context.jsonld",
    "https://linkedsoftwaredependencies.org/bundles/npm/@ldf/datasource-hdt/^3.0.0/components/context.jsonld",
  ],
  // Same as above...
}

License

The Linked Data Fragments server is written by Ruben Verborgh, Miel Vander Sande, Ruben Taelman and colleagues.

This code is copyrighted by Ghent University – imec and released under the MIT license.