LDT vocabulary

For a standard definition, see Linked Data Template vocabulary specification.

This document summarizes the Linked Data Templates vocabulary in a human-readable form. For RDF version, see the ldt.ttl.

The ldt: namespace URI is https://www.w3.org/ns/ldt#.

Applications

Classes

ldt:Application

AtomGraph Processor application

ldt:Ontology

A class of sitemap ontologies

Properties

ldt:ontology

Application ontology

OWL ontology with resource classes (templates)

ldt:base

Application base URI

Templates

Classes

ldt:Template

A class of RDF resources that share the same URI template and SPARQL query template

ldt:Parameter

A class of RDF resources that represent template parameters, passed as URL query parameter

It should be possible to generalize this for request body parameters as well, but this is currently undefined

ldt:Query

A union of SPIN's sp:Construct and sp:Describe classes

Could be generalized for ASK and SELECT queries as well

ldt:Update

A subclass of SPIN's sp:Update class

Properties

These properties can be used on Linked Data Templates:

ldt:extends

Inherit LDT properties from the super-template (object-oriented inheritance)

ldt:query

SPIN query to retrieve resource description (DESCRIBE or CONSTRUCT)

ldt:update

SPIN update to remove resource description

ldt:match

URI template for resource matching

See also JAX-RS URI template syntax.

ldt:path

Container-relative URI template for blank node skolemization

Variable names in the URI template map to property local names in the resource description and can be chained using . as as separator (e.g. {primaryTopic.label}). Property values are bound to the variables during URI building.

See also JAX-RS URI template syntax.

ldt:fragment

URI fragment template, e.g. #this. Uses the same property path syntax as ldt:path.

ldt:param

Query string parameters as ldt:Parameters

ldt:lang

rdf:List of BCP47 language tags

ldt:cacheControl

Value of the HTTP Cache-Control response header

ldt:loadClass

Indicates the Java class that will handle requests matched by this template. Needs to start with java: URI scheme.

Additionally, these properties from the SPIN vocabulary are supported.

spin:constructor

SPIN constructor query (CONSTRUCT)

spin:constraint

SPIN constraint query

HATEOAS

These properties are added by AtomGraph to resource descriptions to enable HATEOAS state transitions over HTTP:

ldt:arg

Connects hypermedia state to a parameter argument

ldt:paramName

The parameter local name of an argument