if (log.isTraceEnabled())
log.trace("using top key to seek for doc: " + topKey.toString());
Key docKey = buildDocKey();
docSource.seek(new Range(docKey, true, null, false), docColfSet, true);
log.debug("got doc key: " + docSource.getTopKey().toString());
if (docSource.hasTop() && docKey.compareTo(docSource.getTopKey(), PartialKey.ROW_COLFAM_COLQUAL) == 0) {
value = docSource.getTopValue();
}
log.debug("got doc value: " + value.toString());
}