Sample GeoSPARQL feature

ogcincubator · Jul 30, 2024 · 61e7daf · 61e7daf
1 parent 5745752
commit 61e7daf
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Showing 7 changed files with 99 additions and 2 deletions.
diff --git a/_sources/feature/geojsonFeatureFGLenient/bblock.json b/_sources/feature/geojsonFeatureFGLenient/bblock.json
@@ -13,6 +13,5 @@
     "feature",
     "examples"
   ],
-  "group": "Examples",
-  "highlighted": true
+  "group": "Examples"
 }
diff --git a/_sources/feature/geosparqlFeature/bblock.json b/_sources/feature/geosparqlFeature/bblock.json
@@ -0,0 +1,25 @@
+{
+  "name": "Feature with GeoSPARQL geometry",
+  "abstract": "This example includes an uplift step to use a GeoSPARQL geometry in a GeoJSON object",
+  "status": "under-development",
+  "dateTimeAddition": "2024-07-30T00:00:00Z",
+  "itemClass": "schema",
+  "register": "ogc-building-block-examples",
+  "version": "1.0",
+  "dateOfLastChange": "2023-05-19",
+  "maturity": "development",
+  "scope": "unstable",
+  "tags": [
+    "feature",
+    "examples"
+  ],
+  "group": "Examples",
+  "semanticUplift": {
+    "additionalSteps": [
+      {
+        "type": "shacl",
+        "ref": "uplift/geometry.shacl"
+      }
+    ]
+  }
+}
diff --git a/_sources/feature/geosparqlFeature/context.jsonld b/_sources/feature/geosparqlFeature/context.jsonld
@@ -0,0 +1,9 @@
+{
+  "@context": {
+    "geojson": "https://purl.org/geojson/vocab#",
+    "geometry": {
+      "@id": "geojson:geometry",
+      "@type": "@json"
+    }
+  }
+}
diff --git a/_sources/feature/geosparqlFeature/examples.yaml b/_sources/feature/geosparqlFeature/examples.yaml
@@ -0,0 +1,5 @@
+- title: Sample feature
+  base-uri: http://example.com/features/
+  snippets:
+    - language: json
+      ref: examples/feature.json
diff --git a/_sources/feature/geosparqlFeature/examples/feature.json b/_sources/feature/geosparqlFeature/examples/feature.json
@@ -0,0 +1,20 @@
+{
+  "id": "f1",
+  "type": "Feature",
+  "geometry": {
+    "type": "LineString",
+    "coordinates": [
+      [
+        -111.67183507997295,
+        40.056709946862874
+      ],
+      [
+        -111.71,
+        40.156709946862874
+      ]
+    ]
+  },
+  "properties": {
+    "myProp": "Mandatory property example"
+  }
+}
diff --git a/_sources/feature/geosparqlFeature/schema.yaml b/_sources/feature/geosparqlFeature/schema.yaml
@@ -0,0 +1,5 @@
+allOf:
+  - $ref: bblocks://ogc.geo.features.feature
+  - properties:
+      geometry:
+        type: object
diff --git a/_sources/feature/geosparqlFeature/uplift/geometry.shacl b/_sources/feature/geosparqlFeature/uplift/geometry.shacl
@@ -0,0 +1,34 @@
+@prefix sh: <http://www.w3.org/ns/shacl#> .
+@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
+@prefix geojson: <https://purl.org/geojson/vocab#> .
+@prefix : <urn:ogc-bblocks:examples#> .
+
+:RectangleRulesShape
+	a sh:NodeShape ;
+	sh:targetSubjectsOf geojson:geometry ;
+	sh:rule [
+		a sh:SPARQLRule ;
+		sh:construct """
+		  PREFIX geojson: <https://purl.org/geojson/vocab#>
+		  PREFIX geosparql: <http://www.opengis.net/ont/geosparql#>
+		  PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
+			CONSTRUCT {
+				$this geosparql:hasGeometry [
+				  geosparql:asGeoJson ?geojsonLiteral
+				]
+			}
+			WHERE {
+				$this geojson:geometry ?geojson .
+				BIND(STRDT(STR(?geojson), geosparql:geoJSONLiteral) as ?geojsonLiteral)
+			}
+    """ ;
+
+    # Only apply to geometries with type rdf:JSON
+		sh:condition [
+		  sh:property [
+		    sh:path geojson:geometry ;
+		    sh:datatype rdf:JSON ;
+		  ] ;
+		] ;
+	] ;
+.