15 Module schema

15 Module schema🔗ℹ

This module provides a higher-level interface for creating RDF Schema graphs, accepting more raw types which are converted, providing type-specific constructors with common properties as keyword arguments, and a method to convert a schema value into a set of statements.

Schema Module Overview

Examples:

> (require rdf/core/graph
           rdf/core/io
           rdf/core/nsmap
           rdf/core/resource
           rdf/core/schema)
> (define example
    (make-schema "http://example.com/ns/"
                 #:label "An example schema"

                 (assert 'version 2)
                 (class 'Identity)
                 (class 'Entity)
                 (class 'Campaign #:subClassOf 'Entity)
                 (class 'AdGroup #:subClassOf 'Entity)
                 (class 'Ad #:subClassOf 'Entity)

                 (property 'hasIdentity
                           #:domain 'Entity
                           #:range 'Identity)
                 (property 'hasDependentPart
                           #:label "has dependent part")
                 (property 'hasIndependentPart
                           #:label "has independent part")
                 (property 'hasGroup
                           #:label "has group"
                           #:subPropertyOf 'hasIndependentPart
                           #:domain 'Campaign
                           #:range 'AdGroup)
                 (property 'hasAd
                           #:label "has ad"
                           #:subPropertyOf 'hasIndependentPart
                           #:domain 'AdGroup
                           #:range 'Ad)))
> (let ((ns-map (make-common-nsmap)))
     (nsmap-set-default! ns-map (string->resource "http://example.com/ns/"))
     (write-ntriple-graph
      (unnamed-graph (schema->statements example)
                     ns-map)))
<http://example.com/ns/hasAd> <http://www.w3.org/2000/01/rdf-schema#domain> <http://example.com/ns/AdGroup> .
<http://example.com/ns/hasDependentPart> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/1999/02/22-rdf-syntax-ns#Property> .
<http://example.com/ns/Campaign> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/2000/01/rdf-schema#Class> .
<http://example.com/ns/hasGroup> <http://www.w3.org/2000/01/rdf-schema#range> <http://example.com/ns/AdGroup> .
<http://example.com/ns/AdGroup> <http://www.w3.org/2000/01/rdf-schema#subClassOf> <http://example.com/ns/Entity> .
<http://example.com/ns/hasIdentity> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/1999/02/22-rdf-syntax-ns#Property> .
<http://example.com/ns/Ad> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/2000/01/rdf-schema#Class> .
<http://example.com/ns/hasAd> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/1999/02/22-rdf-syntax-ns#Property> .
<http://example.com/ns/> <http://www.w3.org/2000/01/rdf-schema#label> "An example schema" .
<http://example.com/ns/hasAd> <http://www.w3.org/2000/01/rdf-schema#label> "has ad" .
<http://example.com/ns/Campaign> <http://www.w3.org/2000/01/rdf-schema#subClassOf> <http://example.com/ns/Entity> .
<http://example.com/ns/hasGroup> <http://www.w3.org/2000/01/rdf-schema#domain> <http://example.com/ns/Campaign> .
<http://example.com/ns/hasAd> <http://www.w3.org/2000/01/rdf-schema#subPropertyOf> <http://example.com/ns/hasIndependentPart> .
<http://example.com/ns/hasGroup> <http://www.w3.org/2000/01/rdf-schema#label> "has group" .
<http://example.com/ns/> <http://example.com/ns/version> "2"^^<http://www.w3.org/2001/XMLSchema#integer> .
<http://example.com/ns/hasGroup> <http://www.w3.org/2000/01/rdf-schema#subPropertyOf> <http://example.com/ns/hasIndependentPart> .
<http://example.com/ns/hasIndependentPart> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/1999/02/22-rdf-syntax-ns#Property> .
<http://example.com/ns/hasIdentity> <http://www.w3.org/2000/01/rdf-schema#range> <http://example.com/ns/Identity> .
<http://example.com/ns/Identity> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/2000/01/rdf-schema#Class> .
<http://example.com/ns/Ad> <http://www.w3.org/2000/01/rdf-schema#subClassOf> <http://example.com/ns/Entity> .
<http://example.com/ns/hasIndependentPart> <http://www.w3.org/2000/01/rdf-schema#label> "has independent part" .
<http://example.com/ns/Entity> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/2000/01/rdf-schema#Class> .
<http://example.com/ns/AdGroup> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/2000/01/rdf-schema#Class> .
<http://example.com/ns/hasDependentPart> <http://www.w3.org/2000/01/rdf-schema#label> "has dependent part" .
<http://example.com/ns/hasGroup> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/1999/02/22-rdf-syntax-ns#Property> .
<http://example.com/ns/hasIdentity> <http://www.w3.org/2000/01/rdf-schema#domain> <http://example.com/ns/Entity> .
<http://example.com/ns/hasAd> <http://www.w3.org/2000/01/rdf-schema#range> <http://example.com/ns/Ad> .

15.1 Schema Type

15.2 Things

15.3 Assertions

1	Introduction
2	Module name
3	Module resource
4	Module nsname
5	Module nsmap
6	Module literal
7	Module statement
8	Module triple
9	Module graph
10	Module tree
11	Module quad
12	Module dataset
13	Module query
14	Module io
15	Module schema
16	Vocabulary Modules
17	Appendix: Names Defined
	Bibliography
	Index