RDF Prefixes
For some RDF formats, e.g. text/turtle, prefixes can be added to have a more clean and readable output. There are several ways that prefixes will be added to the output of the LDES Server.
Well known prefixes
Well known prefixes are some of the prefixes that are most frequent used in LDES and are hard coded in the LDES server and can be found here:
| Prefix | URI |
|---|---|
| foaf | http://xmlns.com/foaf/0.1/ |
| rdf | http://www.w3.org/1999/02/22-rdf-syntax-ns# |
| rdfs | http://www.w3.org/2000/01/rdf-schema# |
| skos | http://www.w3.org/2004/02/skos/core# |
| owl | http://www.w3.org/2002/07/owl# |
| xsd | http://www.w3.org/2001/XMLSchema# |
| geo | http://www.opengis.net/ont/geosparql# |
| dcat | http://www.w3.org/ns/dcat# |
| dct | http://purl.org/dc/terms/ |
| prov | http://www.w3.org/ns/prov# |
| m8g | http://data.europa.eu/m8g/ |
| tree | https://w3id.org/tree# |
| ldes | https://w3id.org/ldes# |
| sh | http://www.w3.org/ns/shacl# |
| shsh | http://www.w3.org/ns/shacl-shacl# |
Configured prefixes
When needed, additional prefixes can be added to the LDES Server. This can come in handy for project specific prefixes. To add these prefixes, a map can be added to the application properties as follows
ldes-server:
formatting:
prefixes:
prefix1: uri1
prefix2: uri2
prefix3: uri3
In the following example are two prefixes added to the LDES Server:
ldes-server:
formatting:
prefixes:
example: http://example.org/
vsds-verkeersmetingen: http://data.vlaanderen.be/ns/verkeersmetingen#
Event Stream and fragment specific prefixes
Per event stream and fragment, prefixes will be extracted and added to the output. Those will look something like this:
Event stream
collectionName: ${ldes-server.host-name}/{collectionName}
Tree node
collectionName: ${ldes-server.host-name}/{collectionName}viewName: ${ldes-server.host-name}/{collectionName}/{viewName}