Sparql Group Entire Objects into List - sparql

Question

I have a list of restaurants and want to return them grouped in lists by two identifiers. The response would look this this in JSON:
[
{
"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"
}
]
}
]
So that an object in the array has a list where each in the list shares the restaurantChainId and the restaurantTypeId.
I have tried the following group_concat query:
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
But obviously this is just producing a list restaurantTypeId for each restaurantChainId. So it has grouped things correctly. I have things in the correct groups but I only have the id list for each restaurant where I actually want all related information of that restaurant. I don't really know how to go about this. Is it possible?
Improved Query
SELECT ?restaurantChainId (GROUP_CONCAT(DISTINCT ?restaurantTypeId; SEPARATOR=", ") AS ?restaurantTypeIdList) (GROUP_CONCAT(?restaurant; SEPARATOR=", ") AS ?restaurant)
WHERE {
?restaurant <http://example.co.uk/terms#docType> "restaurant" ;
<http://example.co.uk/terms#swiftbic> ?restaurantTypeId;
<http://example.co.uk/terms#institutionFid> ?restaurantChainId ;
<http://example.co.uk/terms#fid> ?officeId .
FILTER (strstarts(str(?restaurantTypeId), 'ABA'))
} GROUP BY ?restaurantChainId ?restaurantTypeId
And here is the current result:
{
"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"
}
} ]
}
}
So the actually groupings are correct and I have the uri for each restaurant but I don't know how to get information specifically related to them.