@Override
public String getUsername(byte[] encodedKey) {
String b64key = Base64.getEncoder().encodeToString(encodedKey);
try {
try (PreparedStatement preparedStatement =
conn.prepareStatement("select name from users where publickey = ? limit 1")) {
preparedStatement.setString(1, b64key);
ResultSet resultSet = preparedStatement.executeQuery();
boolean next = resultSet.next();
if (!next) return "";
return resultSet.getString(1);
}
} catch (SQLException sqle) {
throw new IllegalStateException(sqle);
}
}
@Override
public byte[] getAllUsernamesGzip() throws IOException {
try (PreparedStatement stmt = conn.prepareStatement("select name from users")) {
ResultSet rs = stmt.executeQuery();
List<String> list = new ArrayList<>();
while (rs.next()) {
String username = rs.getString("name");
list.add(username);
}
ByteArrayOutputStream bout = new ByteArrayOutputStream();
try (DataOutputStream dout = new DataOutputStream(new GZIPOutputStream(bout))) {
for (String uname : list) Serialize.serialize(uname, dout);
}
return bout.toByteArray();
} catch (SQLException sqe) {
throw new IOException(sqe);
}
}