public void add(Text cf, Text qual, byte[] val) {
    Preconditions.checkNotNull(cf);
    Preconditions.checkNotNull(qual);
    Preconditions.checkNotNull(val);

    tuples.add(new ColumnTuple(cf, qual, val));
  }
@return byte [] value for first tuple containing fam and qual or null if no match.
accumulo-handler/src/java/org/apache/hadoop/hive/accumulo/AccumuloHiveRow.java