event-selector-dataset

An Apache Camel Jetty implementation that queries an activity stream dataset, fetches the target resource content from Trellis, and then writes the resource bodies to a Fuseki managed dataset as RDF.

Configuration

If running outside of docker, add an entry in /etc/hosts to map "trellis" to the container IP address. To get this address run:

docker inspect trellis | grep IPAddress

Endpoint

The query endpoint is exposed at http://localhost:9095/events

Example Endpoint Type Query

This example requests events with resources that match an rdf:type

$ http://localhost:9095/events?type=rdf:type&node=http%3A%2F%2Fiiif.io%2Fapi%2Fpresentation%2F2%23Manifest

Dependencies

• Start trellis-compose

• Start camel-integration-compose

Resource Aggregation with SPARQL at Fuseki Endpoint

The main use case of this pipeline is to enable repository resources to be grouped as typed collections in named graphs.

This makes a graph of manifests that contain a specific metadata value.

PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX sc: <http://iiif.io/api/presentation/2#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
CONSTRUCT {?manifest sc:metadataLabels ?llist .
?manifest rdf:type sc:Manifest .
?lmid rdf:first ?label .
?label rdfs:label ?k .
?label rdf:value ?v .
?lmid rdf:rest ?llast .
} WHERE {GRAPH ?g {?manifest sc:metadataLabels ?llist .
?llist rdf:rest* ?lmid .
?lmid rdf:first ?label .
?label rdfs:label ?k .
?label rdf:value ?v .
?lmid rdf:rest ?llast .
FILTER(?v = "Leipzig University Library")
}}

curl -v -H"Accept: application/ld+json" "http://localhost:3330/res/query?query=PREFIX%20rdf%3A%20%3Chttp%3A%2F%2Fwww.w3.org%2F1999%2F02%2F22-rdf-syntax-ns%23%3E%0APREFIX%20sc%3A%20%3Chttp%3A%2F%2Fiiif.io%2Fapi%2Fpresentation%2F2%23%3E%0APREFIX%20rdfs%3A%20%3Chttp%3A%2F%2Fwww.w3.org%2F2000%2F01%2Frdf-schema%23%3E%0ACONSTRUCT%20%7B%3Fmanifest%20sc%3AmetadataLabels%20%3Fllist%20.%0A%3Fmanifest%20rdf%3Atype%20sc%3AManifest%20.%0A%3Flmid%20rdf%3Afirst%20%3Flabel%20.%0A%3Flabel%20rdfs%3Alabel%20%3Fk%20.%0A%3Flabel%20rdf%3Avalue%20%3Fv%20.%0A%3Flmid%20rdf%3Arest%20%3Fllast%20.%0A%7D%20WHERE%20%7BGRAPH%20%3Fg%20%7B%3Fmanifest%20sc%3AmetadataLabels%20%3Fllist%20.%0A%3Fllist%20rdf%3Arest*%20%3Flmid%20.%0A%3Flmid%20rdf%3Afirst%20%3Flabel%20.%0A%3Flabel%20rdfs%3Alabel%20%3Fk%20.%0A%3Flabel%20rdf%3Avalue%20%3Fv%20.%0A%3Flmid%20rdf%3Arest%20%3Fllast%20.%0AFILTER(%3Fv%20%3D%20%22Leipzig%20University%20Library%22)%0A%7D%7D"