Sparql将整个对象分组到列表中

我有一个餐馆的列表，我想把它们归为两个标识符组成的列表。响应将在JSON中显示：

[
    {
        "restaurantChainId": "1",
        "restaurantTypeId": "001",
        "restaurantList": [
            {
                "restaurantId": "1-1",
                "restaurantChainId": "1",
                "restaurantTypeId": "001",
                "restaurant name": "Pizza Place London"
                "restaurant location": "London"
            },
            {
                "restaurantId": "1-2",
                "restaurantChainId": "1",
                "restaurantTypeId": "001",
                "restaurant name": "Pizza Place Birmingham"
                "restaurant location": "Birmingham"
            }
        ]
    },
    {
        "restaurantChainId": "1",
        "restaurantTypeId": "002",
        "restaurantList": [
            {
                "restaurantId": "1-3",
                "restaurantChainId": "1",
                "restaurantTypeId": "002",
                "restaurant name": "Pizza Place Manchester"
                "restaurant location": "Manchester"
            }
        ]
    },
    {
        "restaurantChainId": "2",
        "restaurantTypeId": "002",
        "restaurantList": [
            {
                "restaurantId": "2-1",
                "restaurantChainId": "2",
                "restaurantTypeId": "002",
                "restaurant name": "Taco Town London"
                "restaurant location": "London"
            },
            {
                "restaurantId": "2-2",
                "restaurantChainId": "2",
                "restaurantTypeId": "002",
                "restaurant name": "Taco Town Newcastle"
                "restaurant location": "Newcastle"
            }
        ]
    }
]

因此，数组中的对象具有一个列表，其中列表中的每个对象共享

restaurantChainId

和

restaurantTypeId

我已尝试了以下组\u concat查询：

SELECT ?restaurantChainId (GROUP_CONCAT(?restaurantTypeId; SEPARATOR=", ") AS ?restaurantTypeIdList)
WHERE {
  ?restaurant <http://example.com/terms#docType> "restaurant" ;
       <http://example.com/terms#restaurantTypeId> ?restaurantTypeId;
       <http://example.com/terms#institutionFid> ?restaurantChainId .
  FILTER (strstarts(str(?restaurantTypeId), '00'))
} GROUP BY ?restaurantChainId

以下是当前的结果：

{
  "head" : {
    "vars" : [ "restaurantChainId", "restaurantTypeIdList", "restaurant" ]
  },
  "results" : {
    "bindings" : [ {
      "restaurantChainId" : {
        "type" : "literal",
        "value" : "XYZ"
      },
      "restaurantTypeIdList" : {
        "type" : "literal",
        "value" : "ABA3"
      },
      "restaurant" : {
        "type" : "literal",
        "value" : "http://example.co.uk/restaurant/XYZ-4, http://example.co.uk/restaurant/XYZ-5, http://example.co.uk/restaurant/XYZ-6"
      }
    }, {
      "restaurantChainId" : {
        "type" : "literal",
        "value" : "ABC"
      },
      "restaurantTypeIdList" : {
        "type" : "literal",
        "value" : "ABA1"
      },
      "restaurant" : {
        "type" : "literal",
        "value" : "http://example.co.uk/restaurant/ABC-14, http://example.co.uk/restaurant/ABC-15, http://example.co.uk/restaurant/ABC-4"
      }
    }, {
      "restaurantChainId" : {
        "type" : "literal",
        "value" : "XYZ"
      },
      "restaurantTypeIdList" : {
        "type" : "literal",
        "value" : "ABA1"
      },
      "restaurant" : {
        "type" : "literal",
        "value" : "http://example.co.uk/restaurant/XYZ-2, http://example.co.uk/restaurant/XYZ-1"
      }
    }, {
      "restaurantChainId" : {
        "type" : "literal",
        "value" : "XYZ"
      },
      "restaurantTypeIdList" : {
        "type" : "literal",
        "value" : "ABA2"
      },
      "restaurant" : {
        "type" : "literal",
        "value" : "http://example.co.uk/restaurant/XYZ-3"
      }
    }, {
      "restaurantChainId" : {
        "type" : "literal",
        "value" : "ABC"
      },
      "restaurantTypeIdList" : {
        "type" : "literal",
        "value" : "ABA2"
      },
      "restaurant" : {
        "type" : "literal",
        "value" : "http://example.co.uk/restaurant/ABC-9"
      }
    } ]
  }
}

---

因此，实际上分组是正确的，我有每个餐厅的uri，但我不知道如何获取与它们相关的具体信息。

这就是您现在得到的结果吗？或者你想要什么？我的意思是，您是否需要JSON-LD作为响应格式？如果我没有完全错的话，那就需要一个SPARQL contruct查询。对于JSON格式，那么你需要一个支持@AKSW的三重存储/SPARQL引擎。我已经更新了我的答案，以包括一个稍微改进的查询和该查询的输出。好的，这是SPARQL JSON，但缺少什么。我的意思是，它完全包含了您查询的内容。如果您还需要关于餐厅的数据，我强烈建议使用SPARQL

CONSTRUCT

query并使用JSON-LD作为响应类型。我也不认为使用单个SELECT查询是可能的。我的意思是，一方面您需要分组，但另一方面您需要组中每个实体的数据。有时使用（a）多个查询要简单得多，或者更经常地使用（b）在客户端进行数据处理要好得多。这就是您现在得到的结果吗？或者你想要什么？我的意思是，您是否需要JSON-LD作为响应格式？如果我没有完全错的话，那就需要一个SPARQL contruct查询。对于JSON格式，那么你需要一个支持@AKSW的三重存储/SPARQL引擎。我已经更新了我的答案，以包括一个稍微改进的查询和该查询的输出。好的，这是SPARQL JSON，但缺少什么。我的意思是，它完全包含了您查询的内容。如果您还需要关于餐厅的数据，我强烈建议使用SPARQL

CONSTRUCT

query并使用JSON-LD作为响应类型。我也不认为使用单个SELECT查询是可能的。我的意思是，一方面您需要分组，但另一方面您需要组中每个实体的数据。有时使用（a）多个查询要简单得多，或者更经常地使用（b）在客户端进行数据处理要好得多。

{
  "head" : {
    "vars" : [ "restaurantChainId", "restaurantTypeIdList", "restaurant" ]
  },
  "results" : {
    "bindings" : [ {
      "restaurantChainId" : {
        "type" : "literal",
        "value" : "XYZ"
      },
      "restaurantTypeIdList" : {
        "type" : "literal",
        "value" : "ABA3"
      },
      "restaurant" : {
        "type" : "literal",
        "value" : "http://example.co.uk/restaurant/XYZ-4, http://example.co.uk/restaurant/XYZ-5, http://example.co.uk/restaurant/XYZ-6"
      }
    }, {
      "restaurantChainId" : {
        "type" : "literal",
        "value" : "ABC"
      },
      "restaurantTypeIdList" : {
        "type" : "literal",
        "value" : "ABA1"
      },
      "restaurant" : {
        "type" : "literal",
        "value" : "http://example.co.uk/restaurant/ABC-14, http://example.co.uk/restaurant/ABC-15, http://example.co.uk/restaurant/ABC-4"
      }
    }, {
      "restaurantChainId" : {
        "type" : "literal",
        "value" : "XYZ"
      },
      "restaurantTypeIdList" : {
        "type" : "literal",
        "value" : "ABA1"
      },
      "restaurant" : {
        "type" : "literal",
        "value" : "http://example.co.uk/restaurant/XYZ-2, http://example.co.uk/restaurant/XYZ-1"
      }
    }, {
      "restaurantChainId" : {
        "type" : "literal",
        "value" : "XYZ"
      },
      "restaurantTypeIdList" : {
        "type" : "literal",
        "value" : "ABA2"
      },
      "restaurant" : {
        "type" : "literal",
        "value" : "http://example.co.uk/restaurant/XYZ-3"
      }
    }, {
      "restaurantChainId" : {
        "type" : "literal",
        "value" : "ABC"
      },
      "restaurantTypeIdList" : {
        "type" : "literal",
        "value" : "ABA2"
      },
      "restaurant" : {
        "type" : "literal",
        "value" : "http://example.co.uk/restaurant/ABC-9"
      }
    } ]
  }
}