@Override
protected void writeTuples(File f, List<Triple> tuples) throws FileNotFoundException {
Graph g = GraphFactory.createGraphMem();
for (Triple t : tuples) {
g.add(t);
}
RDFDataMgr.write(new FileOutputStream(f), g, getLanguage());
}
public static Map<Node, Graph> indexBySubject(Iterator<Triple> it) {
Map<Node, Graph> result = new HashMap<Node, Graph>();
while (it.hasNext()) {
Triple triple = it.next();
Node s = triple.getSubject();
Graph graph = result.get(s);
if (graph == null) {
graph = GraphFactory.createGraphMem();
result.put(s, graph);
}
graph.add(triple);
}
return result;
}