Thanks for sharing this solution.
Holger
On 29/02/2020 02:46, Angelo Frozza wrote:
Hi Holger,
Thanks again for the answers, it has been of great help.
I understand the commercial pressures.
But, here I found the best answers, since there is a lack of
material on SHACL.
I believe that I finally got to the solution to my problem.
- I rewrote the comparison using the URI, as you indicated:
|
for(;node.value!=="http://www.w3.org/1999/02/22-rdf-syntax-ns#nil";;){...}
|
- $minSize must be declared with sh:parameter in the shape.
I did this and created a ConstraintComponent, removing the
restriction from nodeShape.
I leave here my test files, in case anyone else needs it.
The final code of the function is this:
|
functionmyMinOccur ($this,$minSize){
// Defines an array for the return
varresults =[];
// Defines the the IRIs of the target node
varpropertyName
=TermFactory.namedNode("http://www.example.org#coordinates";);
varrest
=TermFactory.namedNode("http://www.w3.org/1999/02/22-rdf-syntax-ns#rest";);
varnil=TermFactory.namedNode("http://www.w3.org/1999/02/22-rdf-syntax-ns#nil";);
// Finds the object defined by the target node
varpropertyObject =$data.find($this,propertyName,null);
// Navigate the target node graph
for(vart =propertyObject.next();t;t =propertyObject.next()){
// Each instance is a Javascript object
varnode =t.object;
varhead =node;
varlength =0;
// This loop runs thorugh the list and
// counts how many elements are in the list.
for(;node.value !=="http://www.w3.org/1999/02/22-rdf-syntax-ns#nil";;){
length++;
varnext=$data.find(node,rest,null).next();
node =next?next.object:nil;// Get object if triple
}
// If the list length < 2 ($minSize), then it is an outlier.
if(length <$minSize.lex ){
results.push({
value :head
});
}
}
returnresults;
}
|
And the result of the validation was:
|
[a sh:ValidationReport;
sh:conforms false;
sh:result [a sh:ValidationResult;
sh:focusNode ex:MyExample_04;
sh:resultMessage "Value does not have shape
ex:PointShape";
sh:resultPath ex:p_name_3 ;
sh:resultSeverity sh:Violation;
sh:sourceConstraintComponent
sh:NodeConstraintComponent;
sh:sourceShape [];
sh:value ex:point_4
];
sh:result [a sh:ValidationResult;
sh:focusNode ex:point_4 ;
sh:resultMessage "Verify minOccur in coordinates!!!";
sh:resultPath ex:coordinates ;# Have only
one element in rdf:list
sh:resultSeverity sh:Violation;
sh:sourceConstraintComponent
ex:MinOccurConstraintComponent;
sh:sourceShape [];
sh:value []
]
].
|
Hugs,
Angelo
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