Hi,
I have followed the steps in the wiki but I still have the
same problem. I have no problems when I load the nodes of the graph but
when I try to load the edges the program becomes very very slow. I have
calculated that the program lasts 5 days more or less to load the all
graph.
The load of the nodes is as follows:
public static void createImageNodes(BatchInserter neo,
LuceneIndexBatchInserter indexService) throws IOException {
BufferedReader bfEntry = null;
try {
bfEntry = new BufferedReader(new
FileReader("rdbms_images.csv"));
} catch(FileNotFoundException e) {
System.out.print("Error: Fitxer no trobat");
}
long node;
String linea = bfEntry.readLine();
String attrID, attrNLC, attrFILENAME;
StringTokenizer tokens;
while((linea = bfEntry.readLine())!=null) {
tokens = new StringTokenizer(linea,";");
attrID = tokens.nextToken();
properties.put("ID", attrID);
attrNLC = tokens.nextToken();
properties.put("NLC", attrNLC);
attrFILENAME = tokens.nextToken();
properties.put("FILENAME", attrFILENAME);
properties.put("TYPE", "image");
node = neo.createNode(properties);
indexService.index(node, "ID", attrID);
indexService.index(node, "NLC", attrNLC);
indexService.index(node, "FILENAME", attrFILENAME);
indexService.index(node, "TYPE", "image");
nNodes++;
}
indexService.optimize();
}
And the load of the edges is as follows:
public static void createRelationsBetweenTitles(BatchInserter neo,
LuceneIndexBatchInserter indexService) throws IOException {
BufferedReader bfEntry = null;
try {
bfEntry = new BufferedReader(new
FileReader("rdbms_refs_title.csv"));
} catch(FileNotFoundException e) {
System.out.print("Error: Fitxer no trobat");
}
Iterator<Long> it;
String linea = bfEntry.readLine();
long head, tale;
while((linea = bfEntry.readLine()) != null) {
String tokens[] = new String[4];
tokens = linea.split(";");
it = indexService.getNodes("ID", tokens[0]).iterator();
tale = it.next();
while(!neo.getNodeProperties(tale).get("TYPE").equals("title"))
{
tale = it.next();
}
it = indexService.getNodes("ID", tokens[1]).iterator();
head = it.next();
while(!neo.getNodeProperties(head).get("TYPE").equals("title"))
{
head = it.next();
}
properties.put("NLC", tokens[2]);
properties.put("TYPE", tokens[3]);
properties.put("RelationshipType", "REF_TITLE");
neo.createRelationship( tale, head,
MyRelationshipTypes.REF_TITLE, properties );
}
}
Any idea?
Thank you for your help.
Vanesa.
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