@Override
public byte[] getXAttr(long fileId, String uid, String key) throws DatabaseException {
ResultSet<byte[], byte[]> it = null;
try {
// peform a prefix lookup
byte[] prefix = BabuDBStorageHelper.createXAttrPrefixKey(fileId, uid, key);
it = database.prefixLookup(XATTRS_INDEX, prefix, null).get();
// check whether the entry is the correct one
while (it.hasNext()) {
Entry<byte[], byte[]> curr = it.next();
BufferBackedXAttr xattr = new BufferBackedXAttr(curr.getKey(), curr.getValue());
if (uid.equals(xattr.getOwner()) && key.equals(xattr.getKey())) return xattr.getValue();
}
return null;
} catch (BabuDBException exc) {
throw new DatabaseException(exc);
} finally {
if (it != null) it.free();
}
}
