swift build -c release
您可以使用 Swift 包管理器，通过将其作为依赖项添加到 Package.swift 中，将 Kineo 添加到 Swift 项目中
.package(name: "Kineo", url: "https://github.com/kasei/kineo.git", .upToNextMinor(from: "0.0.91")),
创建一个数据库文件 (geo.db) 并加载一个或多个 N-Triples 或 Turtle 文件
% ./.build/release/kineo -q geo.db -d examples/geo-data/geo.ttl load
指定 -d FILENAME 将从 FILENAME 加载数据到默认图。或者，可以将数据加载到特定的命名图（同样，可以使用自定义图名称作为查询默认图）
% ./.build/release/kineo -q geo.db -g http://example.org/dbpedia examples/geo-data/geo.ttl load
可以使用 SPARQL 查询数据
% cat examples/geo-data/geo.rq
PREFIX geo: <http://www.w3.org/2003/01/geo/wgs84_pos#>
SELECT ?s
WHERE {
?s geo:lat ?lat ;
geo:long ?long ;
FILTER(?long < -120)
FILTER(?lat >= 34.0)
FILTER(?lat <= 35.0)
}
ORDER BY ?s
% ./.build/release/kineo -q geo.db query examples/geo-data/geo.rq
Using default graph <file://examples/geo-data/geo.ttl>
1 Result[s: <http://dbpedia.org/resource/Buellton,_California>]
2 Result[s: <http://dbpedia.org/resource/Lompoc,_California>]
3 Result[s: <http://dbpedia.org/resource/Los_Alamos,_California>]
4 Result[s: <http://dbpedia.org/resource/Mission_Hills,_California>]
5 Result[s: <http://dbpedia.org/resource/Orcutt,_California>]
6 Result[s: <http://dbpedia.org/resource/Santa_Barbara_County,_California>]
7 Result[s: <http://dbpedia.org/resource/Santa_Maria,_California>]
8 Result[s: <http://dbpedia.org/resource/Santa_Ynez,_California>]
9 Result[s: <http://dbpedia.org/resource/Solvang,_California>]
10 Result[s: <http://dbpedia.org/resource/Vandenberg_Air_Force_Base>]
Kineo API 可用于创建内存或持久化四元组存储，将 RDF 数据加载到其中，并评估数据上的 SPARQL 查询
import Foundation
import SPARQLSyntax
import Kineo
let graph = Term(iri: "http://example.org/default-graph")
let store = MemoryQuadStore()
let url = URL(string: "http://kasei.us/about/foaf.ttl")!
try store.load(url: url, defaultGraph: graph)
let sparql = "PREFIX foaf: <http://xmlns.com/foaf/0.1/> SELECT * WHERE { ?person a foaf:Person ; foaf:name ?name }"
let q = try SPARQLParser.parse(query: sparql)
let results = try store.query(q, defaultGraph: graph)
for (i, result) in results.bindings.enumerated() {
print("\(i+1)\t\(result)")
}
还有一个 API 可以通过图顶点和边遍历来暴露 RDF 数据
import Foundation
import SPARQLSyntax
import Kineo
let graph = Term(iri: "http://example.org/default-graph")
let store = MemoryQuadStore()
let url = URL(string: "http://kasei.us/about/foaf.ttl")!
try store.load(url: url, defaultGraph: graph)
let graphView = store.graph(graph)
let greg = graphView.vertex(Term(iri: "http://kasei.us/about/#greg"))
let knows = Term(iri: "http://xmlns.com/foaf/0.1/knows")
let name = Term(iri: "http://xmlns.com/foaf/0.1/name")
for v in try greg.outgoing(knows) {
let names = try v.outgoing(name)
if let nameVertex = names.first {
let name = nameVertex.term
print("Greg know \(name)")
}
}
最后，使用配套的 kineo-endpoint 包，可以运行 SPARQL 终结点，允许 SPARQL 协议客户端访问数据
% kineo-endpoint -q geo.db &
% curl -H "Accept: application/sparql-results+json" -H "Content-Type: application/sparql-query" --data 'PREFIX geo: <http://www.w3.org/2003/01/geo/wgs84_pos#> SELECT ?s ?lat ?long WHERE { ?s geo:lat ?lat ; geo:long ?long } LIMIT 3' 'https://:8080/sparql'
{
"head": {
"vars": [ "s", "lat", "long" ]
},
"results": {
"bindings": [
{
"s": { "type": "uri", "value": "http://dbpedia.org/resource/'s-Gravendeel" },
"lat": { "type": "literal", "value": "5.17833333333333E1", "datatype": "http://www.w3.org/2001/XMLSchema#float" },
"long": { "type": "literal", "value": "4.61666666666667E0", "datatype": "http://www.w3.org/2001/XMLSchema#float" }
},
{
"s": { "type": "uri", "value": "http://dbpedia.org/resource/'s-Hertogenbosch" },
"lat": { "type": "literal", "value": "5.17833333333333E1", "datatype": "http://www.w3.org/2001/XMLSchema#float" },
"s": { "type": "uri", "value": "http://dbpedia.org/resource/Groesbeek" },
"long": { "type": "literal", "value": "5.93333333333333E0", "datatype": "http://www.w3.org/2001/XMLSchema#float" }
},
{
"s": { "type": "uri", "value": "http://dbpedia.org/resource/'s-Hertogenbosch" },
"lat": { "type": "literal", "value": "5.1729918E1", "datatype": "http://www.w3.org/2001/XMLSchema#float" },
"long": { "type": "literal", "value": "5.306938E0", "datatype": "http://www.w3.org/2001/XMLSchema#float" }
}
]
}
}