Example #1
0
func ReadTriplesFromFile(c chan *graph.Triple, tripleFile string) {
	f, err := os.Open(tripleFile)
	if err != nil {
		glog.Fatalln("Couldn't open file", tripleFile)
	}

	defer func() {
		if err := f.Close(); err != nil {
			glog.Fatalln(err)
		}
	}()

	nquads.ReadNQuadsFromReader(c, f)
}
Example #2
0
File: write.go Project: ZSIT/cayley
func (api *Api) ServeV1WriteNQuad(w http.ResponseWriter, r *http.Request, params httprouter.Params) int {
	if api.config.ReadOnly {
		return FormatJson400(w, "Database is read-only.")
	}

	formFile, _, err := r.FormFile("NQuadFile")
	if err != nil {
		glog.Errorln(err)
		return FormatJsonError(w, 500, "Couldn't read file: "+err.Error())
	}

	defer formFile.Close()

	blockSize, blockErr := strconv.ParseInt(r.URL.Query().Get("block_size"), 10, 64)
	if blockErr != nil {
		blockSize = int64(api.config.LoadSize)
	}

	tChan := make(chan *graph.Triple)
	go nquads.ReadNQuadsFromReader(tChan, formFile)
	tripleblock := make([]*graph.Triple, blockSize)
	nTriples := 0
	i := int64(0)
	for t := range tChan {
		tripleblock[i] = t
		i++
		nTriples++
		if i == blockSize {
			api.ts.AddTripleSet(tripleblock)
			i = 0
		}
	}
	api.ts.AddTripleSet(tripleblock[0:i])
	fmt.Fprintf(w, "{\"result\": \"Successfully wrote %d triples.\"}", nTriples)
	return 200
}