[英]SHACL equivalent of JSON-Schema “uniqueItems”
So I'm tasked with converting a JSON-Schema describing an ontology to SHACL.所以我的任务是将描述本体的 JSON-Schema 转换为 SHACL。
JSON-Schema has the uniqueItems
construct, which, as the name suggests, forces all elements in an array to be unique. JSON-Schema 具有
uniqueItems
构造,顾名思义,它强制数组中的所有元素都是唯一的。 For my purposes, only elements of type String are considered.就我而言,只考虑 String 类型的元素。
Is there a similar construct in SHACL? SHACL 中是否有类似的结构?
sh:disjoint
requires explicit unique paths so it doesn't apply. sh:disjoint
需要明确的唯一路径,因此它不适用。 I'm considering creating a SPARQL constraint, though since my instances are all anonymous nodes, I haven't been able to get it to work yet.我正在考虑创建一个 SPARQL 约束,但由于我的实例都是匿名节点,我还没有能够让它工作。
Edit: Adding examples编辑:添加示例
Valid JSON:有效的 JSON:
{
"name": "Robert Lewandowski",
"mbox": "robert@bayern.de",
"contributor_id": {
"identifier": "https://orcid.org/TEST",
"type": "orcid"
},
"role": [
"ContactPerson",
"DataManager"
]
}
Invalid JSON:无效的 JSON:
{
"name": "Robert Lewandowski",
"mbox": "robert@bayern.de",
"contributor_id": {
"identifier": "https://orcid.org/TEST",
"type": "orcid"
},
"role": [
"ContactPerson",
"ContactPerson"
]
}
Valid TTL:有效的 TTL:
madmp:contributor [ foaf:mbox "robert@bayern.de" ;
foaf:name "Robert Lewandowski" ;
madmp:contributor_id [ terms:identifier "https://orcid.org/TEST" ;
madmp:identifier_type "orcid"
] ;
madmp:role ( "ContactPerson" "DataManager")
] ;
Invalid TTL: TTL 无效:
madmp:contributor [ foaf:mbox "robert@bayern.de" ;
foaf:name "Robert Lewandowski" ;
madmp:contributor_id [ terms:identifier "https://orcid.org/TEST" ;
madmp:identifier_type "orcid"
] ;
madmp:role ( "ContactPerson" "ContactPerson")
So this is a solution I came up with.所以这是我想出的解决方案。 It uses the dash vocabulary to first make sure the
rdf:List
structure is valid.它使用破折号词汇首先确保
rdf:List
结构有效。 The SPARQL constraint then makes sure that the values are unique. SPARQL 约束然后确保这些值是唯一的。
It might not be pretty, but it works for me.它可能不漂亮,但对我有用。
sh:property [
sh:path madmp:role;
sh:name "The Role Schema";
sh:description "Type of contributor";
sh:node dash:ListShape;
sh:minCount 1 ;
sh:property [
sh:path ( [ sh:zeroOrMorePath rdf:rest ] rdf:first ) ;
sh:datatype xsd:string ;
sh:minCount 1 ;
]
];
sh:sparql [
sh:message "Contributor {?name} has role {?role} more than once ({?roleCount} times).";
sh:prefixes (madmp: rdf: foaf:);
sh:select """
PREFIX madmp: <https://w3id.org/madmp/terms#>
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
prefix foaf: <http://xmlns.com/foaf/0.1/>
SELECT $this ?role ?name (COUNT(?role) AS ?roleCount)
WHERE {
$this $PATH ?contributor.
?contributor madmp:role/rdf:rest*/rdf:first ?role;
foaf:name ?name
}
GROUP BY $this ?name ?role
HAVING (?roleCount > 1)
"""
]
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