/// <summary>
/// Evaluates this constraint against the given data graph
/// </summary>
internal override RDFValidationReport ValidateConstraint(RDFShapesGraph shapesGraph, RDFGraph dataGraph, RDFShape shape, RDFPatternMember focusNode, List <RDFPatternMember> valueNodes)
{
RDFValidationReport report = new RDFValidationReport();
//Search for given node shape
RDFNodeShape nodeShape = shapesGraph.SelectShape(this.NodeShapeUri.ToString()) as RDFNodeShape;
if (nodeShape == null)
{
return(report);
}
#region Evaluation
foreach (RDFPatternMember valueNode in valueNodes)
{
RDFValidationReport nodeShapeReport = RDFValidationEngine.ValidateShape(shapesGraph, dataGraph, nodeShape, new List <RDFPatternMember>()
{
valueNode
});
if (!nodeShapeReport.Conforms)
{
report.AddResult(new RDFValidationResult(shape,
RDFVocabulary.SHACL.NODE_CONSTRAINT_COMPONENT,
focusNode,
shape is RDFPropertyShape ? ((RDFPropertyShape)shape).Path : null,
valueNode,
shape.Messages,
shape.Severity));
}
}
#endregion
return(report);
}
private static RDFShape ParseShapeType(DataRow shapesRow)
{
RDFShape shape = null;
//sh:NodeShape
if (!shapesRow.IsNull("?NSHAPE"))
{
shape = new RDFNodeShape(new RDFResource(shapesRow.Field <string>("?NSHAPE")));
}
//sh:PropertyShape
else if (!shapesRow.IsNull("?PSHAPE") && !shapesRow.IsNull("?PATH"))
{
shape = new RDFPropertyShape(new RDFResource(shapesRow.Field <string>("?PSHAPE")), new RDFResource(shapesRow.Field <string>("?PATH")));
//sh:description
if (!shapesRow.IsNull("?DESCRIPTION"))
{
RDFPatternMember description = RDFQueryUtilities.ParseRDFPatternMember(shapesRow.Field <string>("?DESCRIPTION"));
if (description is RDFLiteral)
{
((RDFPropertyShape)shape).AddDescription((RDFLiteral)description);
}
}
//sh:name
if (!shapesRow.IsNull("?NAME"))
{
RDFPatternMember name = RDFQueryUtilities.ParseRDFPatternMember(shapesRow.Field <string>("?NAME"));
if (name is RDFLiteral)
{
((RDFPropertyShape)shape).AddName((RDFLiteral)name);
}
}
//sh:group
if (!shapesRow.IsNull("?GROUP"))
{
RDFPatternMember group = RDFQueryUtilities.ParseRDFPatternMember(shapesRow.Field <string>("?GROUP"));
if (group is RDFResource)
{
((RDFPropertyShape)shape).SetGroup((RDFResource)group);
}
}
//sh:order
if (!shapesRow.IsNull("?ORDER"))
{
RDFPatternMember order = RDFQueryUtilities.ParseRDFPatternMember(shapesRow.Field <string>("?ORDER"));
if (order is RDFTypedLiteral && ((RDFTypedLiteral)order).Datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_INTEGER))
{
((RDFPropertyShape)shape).SetOrder(int.Parse(((RDFTypedLiteral)order).Value));
}
}
}
return(shape);
}
/// <summary>
/// Detects the typed instances of shacl:NodeShape and populates the shapes graph with their definition
/// </summary>
private static void DetectTypedNodeShapes(RDFGraph graph, RDFShapesGraph shapesGraph)
{
RDFGraph declaredNodeShapes = graph.SelectTriplesByPredicate(RDFVocabulary.RDF.TYPE)
.SelectTriplesByObject(RDFVocabulary.SHACL.NODE_SHAPE);
foreach (RDFTriple declaredNodeShape in declaredNodeShapes)
{
RDFNodeShape nodeShape = new RDFNodeShape((RDFResource)declaredNodeShape.Subject);
DetectShapeTargets(graph, nodeShape);
DetectShapeAttributes(graph, nodeShape);
DetectShapeConstraints(graph, nodeShape);
shapesGraph.AddShape(nodeShape);
}
}