sttl.logger.json.rq Maven / Gradle / Ivy

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#
# table: key->value
# generate a JSON SPARQL Result format for graphic chart 
#
template st:json(?table) {
format {

"""{
"head": { "vars": [ "x", "c"] },
"results": { "bindings": [
%s
]
}
}
"""

group {
    format {
        """{
        "x": { "type": "literal", "value": "%s"},
        "c": { "type": "typed-literal", "datatype": "http://www.w3.org/2001/XMLSchema#integer", "value": "%s"}
        }"""
        ?key ?value
    }
    ; separator=',\n'
}

}


}
where {    
    select * where {
        values ?table { UNDEF }
        values (?key ?value)    { unnest(?table) }
    }
    order by desc(?value) ?key
}