@Override
public void sparqlConstruct(String query, OutputStream os) throws StreamException {
try {
Statement st = getConnection().createStatement();
// TODO: evaluate
logEnable(st, true, false);
RecordStream rs =
new ResultSetRecordStream(executeQuery(st, "SPARQL " + prefixes + " " + query));
NtWriter nt = new NtWriter(os);
Record r;
while ((r = rs.getNext()) != null) {
String s = "" + r.get("S");
String p = "" + r.get("P");
String o = "" + r.get("O");
nt.writeStatement(s, p, o);
}
st.close();
} catch (SQLException ex) {
throw new StreamException(ex);
} catch (IOException ex) {
throw new StreamException(ex);
}
}
public void writeLiteral(String s, String p, Object o) throws IOException {
if (validate) {
if (strictValidator != null) {
strictValidator.validateLiteral(s, p, o);
}
validateUri(s);
validateUri(p);
}
stmtCount++;
NtWriter.writeLiteral(os, s, p, o, escapeUnicode);
}
public void writeLiteral(Object s, Object p, Object o) throws IOException {
if (validate) {
if (strictValidator != null) {
strictValidator.validateLiteral(s, p, o);
}
validateUri(s.toString());
validateUri(p.toString());
validateLiteral(o);
}
stmtCount++;
NtWriter.writeLiteral(os, s.toString(), p.toString(), o, escapeUnicode);
}
private void writeResource(String s) throws IOException {
NtWriter.writeResource(os, s);
}