控制RDF到"更漂亮"JSON-LD的转换

Question

我知道将RDF转换为JSON-LD有一些限制,但我想知道是否有一种很好的方法可以使转换避免使用空白节点？

例如,给定RDF图:

@prefix ex: <http://example.org/ontology#> .
<http://example.org/x123> ex:house [
                                      a ex:House ;
                                      ex:houseNumber "1a" ;
                                      ex:doorColour "blue"
                                   ] ;
                          ex:house [
                                      a ex:House ;
                                      ex:houseNumber "1b" ;
                                      ex:doorColour "green"
                                   ] .

是否有可能使用(Java)JSON-LD强制转换为基于数组的bnodes表示:

{
  "id": "http://example.org/x123",
  "house": [{
    "type": "House",
    "houseNumber": "1a",
    "doorColour": "blue"
  }, {
    "type": "House",
    "houseNumber": "1b",
    "doorColour": "green"
  }],
  "@context": {
      "ex": "http://example.org/ontology#",
      "house": "ex:house",
      "houseNumber": "ex:houseNumber",
      "doorColour": "ex:doorColour",
      "House": "ex:House",
      "id": "@id",
      "type": "@type"
  }
}

而不是像:

{
  "@graph": [
    {
      "@id": "_:b0",
      "@type": "http://example.org/ontology#House",
      "http://example.org/ontology#doorColour": "blue",
      "http://example.org/ontology#houseNumber": "1a"
    },
    {
      "@id": "_:b1",
      "@type": "http://example.org/ontology#House",
      "http://example.org/ontology#doorColour": "green",
      "http://example.org/ontology#houseNumber": "1b"
    },
    {
      "@id": "http://example.org/x123",
      "http://example.org/ontology#house": [
        {
          "@id": "_:b0"
        },
        {
          "@id": "_:b1"
        }
      ]
    }
  ]
}

目前,我正在迭代图中的语句并手动生成JSON,但是使用java-jsonld或其他JSON-LD技术等库可以做到这一点吗？

Answer 1

您可以使用框架来实现这一点。查看 JSON-LD 游乐场中的库示例。不幸的是它还没有标准化，因此各种实现可能不会产生完全相同的输出和/或超级不同的功能