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package org.semanticweb.simpleETL;
import org.openrdf.rio.RDFParser;
import org.openrdf.rio.RDFWriter;
import org.openrdf.rio.rdfxml.RDFXMLParser;
import org.openrdf.rio.turtle.TurtleWriter;
import uk.ac.ox.cs.pagoda.util.Utility;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.regex.Pattern;
public class SimpleETL {
protected final static String m_prefix_LUBM = "http://www.lehigh.edu/~zhp2/2004/0401/univ-bench.owl#";
protected final static String m_prefix_UOBM = "http://semantics.crl.ibm.com/univ-bench-dl.owl#";
protected final static String m_prefix_FLY= "http://www.virtualflybrain.org/ontologies/individual_neurons/FC_neuron_GF_an.owl#";
String m_prefix;
String m_fileToImport;
String m_fileToExport;
public SimpleETL(String prefix, String fileToImport) {
m_prefix = prefix;
m_fileToImport = fileToImport;
m_fileToExport = m_fileToImport.replace(".owl", ".ttl");
}
public SimpleETL(String prefix, String fileToImport, String outPath) {
m_prefix = prefix;
m_fileToImport = fileToImport;
File file = new File(outPath);
if (file.exists() && file.isDirectory())
m_fileToExport = outPath + Utility.FILE_SEPARATOR + "data.ttl";
else
m_fileToExport = outPath;
// + Utility.FILE_SEPARATOR + m_fileToImport.substring(m_fileToImport.lastIndexOf(Utility.FILE_SEPARATOR), m_fileToImport.lastIndexOf(".")) + ".ttl";
}
public void rewrite() throws Exception {
// RDFParser parser = new TurtleParser();
RDFParser parser = new RDFXMLParser();
FileOutputStream fos = new FileOutputStream(m_fileToExport);
try {
RDFWriter writer = new TurtleWriter(fos);
// String m_fileToExport = m_fileToImport.replace(".owl", ".ntriple");
// RDFWriter writer = new NTriplesWriter(new FileOutputStream(m_fileToExport));
RDFHandlerWriter multiHandler = new RDFHandlerWriter(writer);
parser.setRDFHandler(multiHandler);
File fileToImport = new File(m_fileToImport);
if(fileToImport.isDirectory()) {
for(File file : fileToImport.listFiles()) {
if(file.isFile() && (Pattern.matches(".*.owl", file.getName()) || Pattern.matches(".*.rdf", file.getName()))) {
Utility.logDebug("Parsing " + file.getName());
parser.parse(new FileInputStream(file), m_prefix);
}
}
}
else
parser.parse(new FileInputStream(fileToImport), m_prefix);
writer.endRDF();
}
finally {
fos.close();
}
Utility.logDebug("SimpleETL rewriting DONE: additional ontology data is saved in " + m_fileToExport + ".");
}
public String getExportedFile() {
return m_fileToExport;
}
}
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