protected void addDataFile(OutputStream out) throws IOException {
Writer writer = null;
try {
writer = new OutputStreamWriter(out, "UTF-8");
} catch (UnsupportedEncodingException e) {
throw new RuntimeException(e);
}
OsmWriter w =
OsmWriterFactory.createOsmWriter(new PrintWriter(writer), false, layer.data.getVersion());
layer.data.getReadLock().lock();
try {
w.writeLayer(layer);
w.flush();
} finally {
layer.data.getReadLock().unlock();
}
}