/**
* {@inheritDoc}
*
* @see Writable#readFields(DataInput)
*/
public void readFields(DataInput in) throws IOException {
BSONDecoder dec = new BSONDecoder();
BSONCallback cb = new BasicBSONCallback();
// Read the BSON length from the start of the record
int dataLen = in.readInt();
byte[] buf = new byte[dataLen];
in.readFully(buf);
dec.decode(buf, cb);
_doc = (BSONObject) cb.get();
log.info("Decoded a BSON Object: " + _doc);
}
void _test(BSONObject o, int size, String hash) throws IOException {
BSONEncoder e = new BSONEncoder();
OutputBuffer buf = new BasicOutputBuffer();
e.set(buf);
e.putObject(o);
assertEquals(size, buf.size());
assertEquals(hash, buf.md5());
e.done();
BSONDecoder d = new BSONDecoder();
BasicBSONCallback cb = new BasicBSONCallback();
int s = d.decode(new ByteArrayInputStream(buf.toByteArray()), cb);
assertEquals(size, s);
OutputBuffer buf2 = new BasicOutputBuffer();
e.set(buf2);
e.putObject((BSONObject) cb.get());
assertEquals(size, buf2.size());
assertEquals(hash, buf2.md5());
}