any help here?
Τη Δευτέρα, 18 Νοεμβρίου 2013 6:40:58 μ.μ. UTC+2, ο χρήστης Sotiris Beis
έγραψε:
>
> Hi,
>
> I have this code snippet that read a dataset and creates a graph database
> with OrientDB. Is there any suggestions in order to improve the performance
> of the procedure?
>
> OGlobalConfiguration.STORAGE_KEEP_OPEN.setValue(false);
>
> OGlobalConfiguration.TX_USE_LOG.setValue(false);
>
> OGlobalConfiguration.ENVIRONMENT_CONCURRENT.setValue(false);
>
> OrientGraphNoTx orientGraph = new OrientGraphNoTx(
> "local:data/orient");
>
> orientGraph.getRawGraph().declareIntent(new
> OIntentMassiveInsert());
>
>
>
> orientGraph.createIndex("nodeId", OrientVertex.class);
>
> Index<OrientVertex> vetrices = orientGraph.getIndex("nodeId",
> OrientVertex.class);
>
>
>
> long start = System.nanoTime();
>
> long end = 0;
>
> try {
>
> BufferedReader reader = new BufferedReader(new
> InputStreamReader(new FileInputStream("data/flickrEdges.txt")));
>
> String line;
>
> int lineCounter = 1;
>
> OrientVertex srcVertex, dstVertex;
>
> Iterable<OrientVertex> cache;
>
> while((line = reader.readLine()) != null) {
>
> if(lineCounter > 4) {
>
> String[] parts = line.split(" ");
>
>
>
> cache = vetrices.get("nodeId",parts
> [0]);
>
> if(cache.iterator().hasNext()) {
>
> srcVertex = cache.iterator
> ().next();
>
> }
>
> else {
>
> srcVertex = orientGraph.
> addVertex(null, "nodeId", parts[0] );
>
> vetrices.put("nodeId",parts
> [0], srcVertex);
>
> }
>
>
>
> cache = vetrices.get("nodeId",parts
> [1]);
>
> if(cache.iterator().hasNext()) {
>
> dstVertex = cache.iterator
> ().next();
>
> }
>
> else {
>
> dstVertex = orientGraph.
> addVertex(null, "nodeId", parts[1] );
>
> vetrices.put("nodeId",parts
> [1], dstVertex);
>
> }
>
>
>
> Edge edge = orientGraph.addEdge(
> null, srcVertex, dstVertex, "similar");
>
> }
>
> lineCounter++;
>
> }
>
>
>
> <span style="color:
> ...
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