# AGLubm8000Build.java

`package com.franz.agbase.examples;
import java.io.File;
import java.io.FilenameFilter;
import com.franz.agbase.*;
public class AGLubm8000Build {
public static int port = 4126;
public static String store = "/stores/LUBM-8000";
public static String datadir = "/lubm8000.ntriples/data/";
public static String ontologyfile = "/lubm8000.ntriples/ontology/lubm-franz.nt";
public static String fileext = ".ntriples";
public static long expectedResources = 400000000;
public static long chunkSize = 10000000;
/**
* Demonstrates loading and indexing a triple store with the LUBM 8000
* benchmark data.
*
* The data that is necessary to run this example can be generated using
* the LUBM UBA Generator (see http://swat.cse.lehigh.edu/projects/lubm/)
*
* with arguments:
*
* -univ 8000 -index 0 -seed 0 -onto "http://lubm.franz.com"
*
* Please refer to the file AGLubm8000Prolog.java to run these queries
* using RDFS++ reasoning.
*
* @throws AllegroGraphException
*/
public static void main(String[] args) throws AllegroGraphException {
// Connect to server, which must already be running.
AllegroGraphConnection ags = new AllegroGraphConnection();
try {
ags.setPort(port);
ags.enable();
} catch (Exception e) {
throw new AllegroGraphException("Server connection problem", e);
}
System.out.println("Setting default expected resources: " + expectedResources);
ags.setDefaultExpectedResources(expectedResources);
System.out.println("Setting chunk size: " + chunkSize);
ags.setChunkSize(chunkSize);
// Create fresh triple-store
System.out.println("Creating store: " + store);
AllegroGraph ts = ags.renew(store, null);
// Find files having the given file extension in the datadir.
System.out.println("Finding " + fileext + " files in " + datadir);
File dir = new File(datadir);
if (!dir.isDirectory()) {
System.out.println("datadir does not exist: " + datadir);
System.exit(1);
}
FilenameFilter filter = new FilenameFilter() {
public boolean accept(File dir, String name) {
return name.endsWith(fileext);
}
};
File[] files = dir.listFiles(filter);
String[] filenames = new String[files.length];
for (int i=0; i<files.length; i++) {
filenames[i] = files[i].getPath();
}
// Load the files
System.out.println("Loading " + filenames.length + " " + fileext + " files from " + datadir);
long begin = System.nanoTime();
long n = ts.loadNTriples(filenames);
long delta = (System.nanoTime() - begin);
System.out.println("Done loading " + n + " triples in " + (delta/1000000000.0) + " seconds.");
// Assert that GraduateStudent is a subClassOf Student
// This helps reduce LUBM to an RDFS++ problem
ts.addStatement("<http://lubm.franz.com#GraduateStudent>",
"<http://www.w3.org/2000/01/rdf-schema#subClassOf>",
"<http://lubm.franz.com#Student>");
// Index the store
ts.setIndexFlavors(new String[]{"spogi","posgi","ospgi"});
begin = System.nanoTime();
ts.indexAllTriples();
delta = (System.nanoTime() - begin);
System.out.println("Done indexing in " + (delta/1000000000.0) + " seconds.");
// Close the store and disconnect from the server
ts.closeTripleStore();
ags.disable();
}
}
`

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