语境
你好！
我有一个规范，显示与另一个规范中的某些关系相关的问题。我的规范中的所有对象都有所谓的片段语言化（relation:hasFragmentVerbalisation）。
为了正确显示我的问题，我需要区分我有一个“简单” Iri 的情况，我可以直接使用它的语言表达，或者它是否属于某种类型（在这种情况下，如果它是房间或员工的 iri）在哪些情况下我想返回所述类型的所有资源的首选标签（所以基本上如果我的对象代表一个房间，我想返回我在数据库中拥有的所有房间）。
我目前正在处理一个查询并尝试添加一个如下所示的语句部分：
OPTIONAL {
FILTER(isIRI(?object)).
?object relation:hasFragmentVerbalisation ?objectVerb .
}
OPTIONAL {
FILTER (?objectVerb= "Person"@en || ?objectVerb = "Teacher"@en)
?a employee:prefLabel ?employeename .
BIND( ?employeename as ?final ) .
}
OPTIONAL {
FILTER (?objectVerb= "room"@en || ?objectVerb = "lecture hall"@en)
?b room:prefLabel ?roomnumber .
BIND( ?roomnumber as ?final) .
FILTER (regex(?roomnumber, "20" ))
}
#OPTIONAL {
# FILTER (!BOUND(?final))
# BIND( IF ( isURI(?object), ?objectVerb, ?object) as ?final ) .
#}
我想在这里发生的事情
我检索了 ? 对象。我查询的主要结果是 ?final 对象。我现在想介绍三种可能的情况：
- 第一个可选语句：这里我只想检索片段语言。
- 第二个可选语句：如果我的 IRI 实际上指向一个员工，我想将我员工的所有首选标签返回为 ?final。基本上，我要返回我所有员工的名单。
- 第三个可选语句：如果我的 IRI 指向一个房间，我想为 ?final 返回所有房间号。正则表达式过滤器对于我在这里的问题并不重要。
- 第四个（已注释掉的）可选语句：如果第二个和第三个语句不合适， ?final 不应绑定
问题
一般来说，除了出局之外，所有人都评论了一部作品。但是，我在这里遇到两个问题：
- 对于第二个和第三个 Optionals 而不是将 ?objectVerb 与预定义的字符串进行比较，我宁愿问 (only pseudo-code:)
Do this only if ?object rdf:type iri:for:person:or:room。但是，我似乎无法做出这样的声明。 - “注释掉的”可选调用（最后一个）根本不起作用，我对为什么有点困惑。我在这里尝试的是：
- 如果我的 ?final 变量还没有被任何东西绑定，我想检查 ?object 是否是 IRI，如果不是，我希望将之前检索到的 ?objectVerb-value 设置为 ?final 的值
这里有人可以指出解决方案吗？谢谢您的帮助。
编辑：完整的查询：
PREFIX relation: <urn:xxx:beziehungen#>
PREFIX yyy: <urn:xxx#>
PREFIX employee: <urn:xxx:fb5:employee#>
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX room: <urn:yyy:assets:location:room#>
PREFIX label: <urn:xxx:assets:labels#>
PREFIX wording: <urn:xxx:assets:wording#>
SELECT DISTINCT ?first ?second ?third ?fourth ?fourt4 ?fifth ?resulttype
WHERE {
?wording rdf:first ?first1 .
?wording rdf:rest/rdf:first ?second2 .
?wording rdf:rest/rdf:rest/rdf:first ?third3 .
?wording rdf:rest/rdf:rest/rdf:rest/rdf:first ?fourt4 .
?wording rdf:rest/rdf:rest/rdf:rest/rdf:rest/rdf:first ?fifth5 .
relation:hasBureau rdfs:range ?resulttype .
{
SELECT distinct ?wording (COUNT(?wording) AS ?sum)
WHERE {
relation:hasBureau relation:bigWord ?wording .
?wording rdf:rest*/rdf:first ?element .
}
GROUP BY ?wording
HAVING (?sum = 5)
}
OPTIONAL {
FILTER(isIRI(?first1)).
?first1 relation:fragmentWord ?firstVerb.
}
BIND( IF ( isURI(?first1), ?firstVerb , ?first1) as ?first ) .
FILTER(BOUND(?first)).
OPTIONAL {
FILTER(isIRI(?second2)).
?second2 relation:fragmentWord ?secondVerb.
}
OPTIONAL {
FILTER(isIRI(?third3)).
?third3 relation:fragmentWord ?thirdVerb.
}
BIND( IF ( isURI(?third3), ?thirdVerb , ?third3) as ?third ) .
FILTER(BOUND(?third)).
OPTIONAL {
FILTER(isIRI(?fourt4)).
?fourt4 relation:fragmentWord ?fourthVerb .
}
OPTIONAL {
FILTER(isIRI(?fifth5)).
?fifth5 relation:fragmentWord ?fifthVerb.
}
BIND( IF ( isURI(?fifth5), ?fifthVerb, ?fifth5) as ?fifth ) .
FILTER(BOUND(?fifth)).
OPTIONAL {
FILTER (?fourthVerb = "Person"@de || ?fourthVerb = "Dozent"@de || ?fourthVerb = "Lehrender"@de || ?fourthVerb = "Angestellter"@de)
?a employee:prefLabel ?employeename .
BIND( ?employeename as ?fourth ) .
}
OPTIONAL {
FILTER (?fourthVerb = "Hörsaal"@de || ?fourthVerb = "Zimmer"@de || ?fourthVerb = "Seminarraum"@de)
?b room:prefLabel ?roomnumber .
BIND( ?roomnumber as ?fourth ) .
}
FILTER(BOUND(?fourth)).
#OPTIONAL {
# FILTER (!BOUND(?fourth))
# BIND( IF ( isURI(?fourt4), ?fourthVerb, ?fourt4) as ?fourth ) .
#}
OPTIONAL {
FILTER (?secondVerb = "Büro"@de)
BIND( "Büro"@de as ?second ) .
}
OPTIONAL {
FILTER (?secondVerb = "Buero"@de)
BIND( "Buero"@de as ?second ) .
}
OPTIONAL {
FILTER (?secondVerb = "Person"@de || ?secondVerb = "Dozent"@de || ?secondVerb = "Lehrender"@de || ?secondVerb = "Angestellter"@de)
?a employee:prefLabel ?employeename .
BIND( ?employeename as ?second ) .
}
#OPTIONAL {
# FILTER (!BOUND(?second))
# BIND( IF ( isURI(?second2), ?secondVerb, ?second2) as ?second ) .
#}
}
以及一个极其缩短的数据集，可以在其上运行它：
PREFIX relation: <urn:xxx:beziehungen#>
PREFIX yyy: <urn:xxx#>
PREFIX employee: <urn:xxx:fb5:employee#>
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX room: <urn:yyy:assets:location:room#>
PREFIX label: <urn:xxx:assets:labels#>
PREFIX wording: <urn:xxx:assets:wording#>
<urn:xxx:fb5:employee#>
rdfs:subClassOf wording:fragment ;
relation:fragmentWord "Person"@de , "Dozent"@de, "Lehrender"@de, "Angestellter"@de .
<urn:yyy:assets:location:room#>
rdfs:subClassOf wording:fragment ;
relation:fragmentWord "Raum"@de , "Zimmer"@de, "Seminarraum"@de, "Hörsaal"@de .
relation:hasBureau
rdf:type rdf:Property ;
owl:minCardinality "1" ;
rdfs:domain employee:name ;
rdfs:range room:number ;
rdfs:label "hat ein Büro"@de, "has a bureau"@en ;
relation:fragmentWord "Büro"@de , "Buero"@de ;
relation:bigWord ("In welchem" relation:hasBureau "ist" <urn:xxx:fb5:employee#> "?") ;
relation:bigWord ("Finde ich" <urn:xxx:fb5:employee#> "in" <urn:yyy:assets:location:room#> "?") .
employee:PersonOne employee:prefLabel "Employee One".
employee:PersonOne relation:hasBureau room:23129 .
room:23129 room:prefLabel "23-129".
employee:PersonTwo employee:prefLabel "Employee Two".
employee:PersonTwo relation:hasBureau room:23232 .
room:23232 room:prefLabel "23-232".