feat: Add qualifiedRelation to the validation

ogdch.shacl.ttl

@@ -25,11 +25,22 @@
         sh:path skos:inScheme ;
     ] .
 
+:ThemeRestriction
+    a sh:NodeShape ;
+    rdfs:comment "Theme Restriction" ;
+    rdfs:label "Theme Restriction" ;
+    sh:property [
+        sh:hasValue <http://publications.europa.eu/resource/authority/data-theme> ;
+        sh:minCount 1 ;
+        sh:nodeKind sh:IRI ;
+        sh:path skos:inScheme ;
+    ] .
+
 :DatasetShape
   rdf:type sh:NodeShape ;
   sh:targetClass dcat:Dataset ;
   sh:property [
-      sh:path dct:description ;
+      sh:path dct:description ;   # mandatory property
       sh:minCount 1 ;
       sh:nodeKind sh:Literal ;
       sh:severity sh:Violation ;
@@ -38,7 +49,7 @@
 	    """@en ;
   ] ;
   sh:property [
-      sh:path dct:title ;
+      sh:path dct:title ;   # mandatory property
       sh:minCount 1 ;
       sh:nodeKind sh:Literal ;
       sh:severity sh:Violation ;
@@ -47,15 +58,15 @@
 	    """@en ;
   ] ;
   sh:property [
-      sh:path dcat:distribution ;
+      sh:path dcat:distribution ;   # mandatory property
       sh:minCount 1 ;
       sh:severity sh:Violation ;
       sh:message """This dataset does not have any distributions. Please add a distribution for the dataset.
         See https://handbook.opendata.swiss/de/content/glossar/bibliothek/dcat-ap-ch.html#dcat-distribution-dcat
 	    """@en ;
   ] ;
   sh:property [
-      sh:path dcat:contactPoint ;
+      sh:path dcat:contactPoint ;   # mandatory property
       sh:minCount 1 ;
       sh:severity sh:Violation ;
       sh:message """This dataset does not provide a contact point. Please add a contact point for the dataset.
@@ -77,7 +88,7 @@
 	    """@en ;
   ] ;
   sh:property [
-      sh:path dct:publisher ;
+      sh:path dct:publisher ;   # mandatory property
       sh:minCount 1 ;
       sh:severity sh:Violation ;
       sh:message """This dataset does not provide a publisher. Please add a publisher for the dataset.
@@ -87,13 +98,6 @@
   sh:property [
       sh:path dct:publisher ;
       sh:class foaf:Organization ;
-      sh:severity sh:Warning ;
-      sh:message """The publisher needs to be provided as foaf:Organization.
-        See https://handbook.opendata.swiss/content/glossar/bibliothek/dcat-ap-ch.html#dcat-dataset-publisher
-	    """@en ;
-  ] ;
-  sh:property [
-      sh:path dct:publisher ;
       sh:node [
         sh:property [
             sh:path rdf:about ;
@@ -106,13 +110,14 @@
             sh:minCount 1 ;
             sh:maxCount 1 ;
         ] ;
+      ] ;
       sh:severity sh:Warning ;
-      sh:message """Ensure that there is only one valid publisher specified for the dataset.
-        Refer to the documentation at https://handbook.opendata.swiss/content/glossar/bibliothek/dcat-ap-ch.html#dcat-dataset-publisher
+      sh:message """Ensure that there is only one valid publisher specified for the dataset, provided as foaf:Organization.
+        See https://handbook.opendata.swiss/content/glossar/bibliothek/dcat-ap-ch.html#dcat-dataset-publisher
         for Details on this change."""@en ;
   ] ;
   sh:property [
-      sh:path dct:identifier ;
+      sh:path dct:identifier ;   # mandatory property
       sh:minCount 1 ;
       sh:maxCount 1 ;
       sh:severity sh:Violation ;
@@ -121,7 +126,7 @@
 	    """@en ;
   ] ;
   sh:property [
-      sh:path dcat:landingPage ;
+      sh:path dcat:landingPage ;   # conditional property
       sh:nodeKind sh:IRI ;
       sh:severity sh:Warning ;
       sh:message """The landing page must to be provided as IRI and not as a string.
@@ -130,33 +135,45 @@
         """@en ;
   ] ;
   sh:property [
-    sh:path dct:relation ;
-    sh:node [
-        sh:property [
-            sh:path rdf:about ;
-            sh:minCount 1 ;
-            sh:maxCount 1 ;
-        ] ;
-        sh:property [
-            sh:path rdfs:label ;
-            sh:nodeKind sh:Literal ;
-            sh:minCount 1 ;
-            sh:maxCount 1 ;
-        ] ;
-    ] ;
-    sh:severity sh:Warning ;
-    sh:message """This dataset does not provide a valid relation.
-        Please add a valid relation for the dataset.
-        See https://ogdch-new-handbook.clients.liip.ch/de/content/glossar/bibliothek/dcat-ap-ch.html#dct-relation-dcat
-        for details."""@en ;
+      sh:path dct:modified ;   # conditional property
+      sh:datatype xsd:dateTime ;
+      sh:severity sh:Warning ;
+      sh:message """The modification date should be in ISO-8601 format.
+         See https://ogdch-new-handbook.clients.liip.ch/de/content/glossar/bibliothek/dcat-ap-ch.html#dct-modified-dcat
+         """@en ;
   ] ;
   sh:property [
-      sh:path dct:modified ;
-      sh:severity sh:Violation ;
-      sh:message """If provided, the modification date should be in ISO-8601 format. See
-         https://ogdch-new-handbook.clients.liip.ch/de/content/glossar/bibliothek/dcat-ap-ch.html#dct-modified-dcat
-         """@en ;
+      sh:path dct:issued ;   # conditional property
       sh:datatype xsd:dateTime ;
+      sh:severity sh:Warning ;
+      sh:message """The issued date should be in ISO-8601 format.
+         See https://ogdch-new-handbook.clients.liip.ch/de/content/glossar/bibliothek/dcat-ap-ch.html#dct-issued-dcat
+         """@en ;
+  ] ;
+  sh:property [
+      sh:path dcat:theme ;   # conditional property
+      sh:node :ThemeRestriction ;
+      sh:nodeKind sh:IRI ;
+      sh:severity sh:Warning ;
+      sh:message """The theme is expected from the controlled vocabulary http://publications.europa.eu/resource/authority/data-theme.
+        See https://ogdch-new-handbook.clients.liip.ch/de/content/glossar/bibliothek/dcat-ap-ch.html#dcat-theme-dcat
+        """@en ;
+  ] ;
+   sh:property [
+      sh:path dcat:qualifiedRelation ;   # optional property
+      sh:nodeKind sh:IRI ;
+      sh:severity sh:Warning ;
+      sh:message """The qualified relation replaces the seeAlso property.
+        Please use dcat:qualifiedRelation instead rdfs:seeAlso.
+        See https://ogdch-new-handbook.clients.liip.ch/de/content/glossar/bibliothek/dcat-ap-ch.html#dcat-qualifiedrelation-dcat
+        """@en ;
+      sh:property [
+      sh:path dcat:Relationship ;
+      sh:nodeKind sh:BlankNode ;
+      sh:property [
+        sh:path dct:relation ;
+        sh:nodeKind sh:IRI ;
+      ] ;
   ] ;
   sh:property [
       sh:path dct:accrualPeriodicity ;
@@ -189,22 +206,6 @@
          https://handbook.opendata.swiss/de/content/glossar/bibliothek/dcat-ap-ch.html#dcat-accessurl-dcat
          """@en ;
   ] ;
-  sh:property [
-      sh:path dct:issued ;
-      sh:minCount 1 ;
-      sh:severity sh:Violation ;
-      sh:message """Please provide the date of the publication of this distribution. See
-         https://ogdch-new-handbook.clients.liip.ch/de/content/glossar/bibliothek/dcat-ap-ch.html#dcat-distribution-issued
-         """@en ;
-    ] ;
-  sh:property [
-      sh:path dct:issued ;
-      sh:datatype xsd:dateTime ;  # to enforce that issued is a dateTime
-      sh:severity sh:Violation ;
-      sh:message """The publication date must be provided as a date and time in ISO-8601 format. For Details see
-         https://handbook.opendata.swiss/de/content/glossar/bibliothek/dcat-ap-ch.html#dcat-accessurl-dcat
-         """@en ;
-  ] ;
   sh:property [
       sh:path dct:license ;
       sh:minCount 1 ;