为什么我在 FOAF 上尝试使用关系时会出现错误？

发布于 2024-11-05 15:36:59 字数 691 浏览 4 评论 0原文

我正在尝试验证 W3C RDF 上的 foaf 代码，并且以下块会导致问题。在这里，我试图展示兰迪和阿迪尔之间的关系，请纠正我为什么我不能在这里使用“rel”标签或者为什么它会引起问题？

<foaf:knows>
        <foaf:Person>

        <foaf:name>Randy</foaf:name>

        <foaf:mbox_sha1sum>0525a7bfaf263d404e751bb12b89e4acc1ce68a7</foaf:mbox_sha1sum>
        <rdfs:workplaceHomepage rdf:resource="randy.html" />
    <rel:friendOf rdf:resource="adil.html"/>        
  </foaf:Person>
    </foaf:knows>

错误：

FatalError: The prefix "rel" for element "rel:friendOf" is not bound.[Line = 39, Column = 46]

原文

I am trying to validate a foaf code on W3C RDF and the from following block it is causing problem. Here I am trying to show relation between Randy and Adil, please currect me why I can't use "rel" tag here or why is it causing problem?

<foaf:knows>
        <foaf:Person>

        <foaf:name>Randy</foaf:name>

        <foaf:mbox_sha1sum>0525a7bfaf263d404e751bb12b89e4acc1ce68a7</foaf:mbox_sha1sum>
        <rdfs:workplaceHomepage rdf:resource="randy.html" />
    <rel:friendOf rdf:resource="adil.html"/>        
  </foaf:Person>
    </foaf:knows>

Error:

FatalError: The prefix "rel" for element "rel:friendOf" is not bound.[Line = 39, Column = 46]

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∝单色的世界 2024-11-12 15:36:59

您应该将 FOAF 内容包装在声明适当名称空间的 RDF 元素中：

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
     xmlns:foaf="http://xmlns.com/foaf/0.1/"
     xmlns:rel="http://www.perceive.net/schemas/relationship/">

You should wrap the FOAF content in an RDF element that declares the appropriate namespaces:

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
     xmlns:foaf="http://xmlns.com/foaf/0.1/"
     xmlns:rel="http://www.perceive.net/schemas/relationship/">

回复收藏 0 原文

你的往事 2024-11-12 15:36:59

您需要以与在 RDF/XML 文档顶部指定 foaf 相同的方式声明命名空间 rel。

这个例子应该适合你......

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
         xmlns:foaf="http://xmlns.com/foaf/0.1/"
         xmlns:rel="http://some.namespace.for.rel.com/ns/"
         xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
         >
 <foaf:Person>
   <foaf:name>Peter Parker</foaf:name>
   <foaf:mbox rdf:resource="mailto:[email protected]"/>
    <foaf:knows>
        <foaf:Person>
        <foaf:name>Randy</foaf:name>
        <foaf:mbox_sha1sum>0525a7bfaf263d404e751bb12b89e4acc1ce68a7</foaf:mbox_sha1sum>
        <rdfs:workplaceHomepage rdf:resource="randy.html" />
    <rel:friendOf rdf:resource="adil.html"/>        
      </foaf:Person>
    </foaf:knows>
 </foaf:Person>
</rdf:RDF>

无论如何，你对 rdfs:workplaceHomepage 的使用是错误的，你应该使用 foaf:workplaceHomepage 和 rel:friendOf< /code> 没有多大意义。您也可以在这里使用foaf:knows。

You need to declare the namespace rel in the same way that you must have specified foaf at the top of your RDF/XML document.

This example should work for you ...

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
         xmlns:foaf="http://xmlns.com/foaf/0.1/"
         xmlns:rel="http://some.namespace.for.rel.com/ns/"
         xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
         >
 <foaf:Person>
   <foaf:name>Peter Parker</foaf:name>
   <foaf:mbox rdf:resource="mailto:[email protected]"/>
    <foaf:knows>
        <foaf:Person>
        <foaf:name>Randy</foaf:name>
        <foaf:mbox_sha1sum>0525a7bfaf263d404e751bb12b89e4acc1ce68a7</foaf:mbox_sha1sum>
        <rdfs:workplaceHomepage rdf:resource="randy.html" />
    <rel:friendOf rdf:resource="adil.html"/>        
      </foaf:Person>
    </foaf:knows>
 </foaf:Person>
</rdf:RDF>

Anyway the use you make of rdfs:workplaceHomepage is wrong, you should use foaf:workplaceHomepage and also rel:friendOf doesn't make much sense. You can use foaf:knows here also.

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