func rowFromTListColumns(key []byte, tl thrift.TList) *Row {
	if tl == nil || tl.Len() <= 0 {
		return nil
	}
	r := &Row{Key: key}
	for colI := range tl.Iter() {
		var col *cassandra.ColumnOrSuperColumn = colI.(*cassandra.ColumnOrSuperColumn)
		if col.Column != nil {
			c := &Column{
				Name:      col.Column.Name,
				Value:     col.Column.Value,
				Timestamp: col.Column.Timestamp,
				Ttl:       col.Column.Ttl,
			}
			r.Columns = append(r.Columns, c)
		} else if col.CounterColumn != nil {
			v, _ := Marshal(col.CounterColumn.Value, LongType)
			c := &Column{
				Name:  col.CounterColumn.Name,
				Value: v,
			}
			r.Columns = append(r.Columns, c)
		}
	}
	return r
}

func (r *reader) SuperGet(key []byte) (*SuperRow, error) {
	if r.cf == "" {
		return nil, errors.New("No column family specified")
	}

	cp := r.buildColumnParent()
	sp := r.buildPredicate()
	var ret thrift.TMap
	var keys thrift.TList = thrift.NewTList(thrift.BINARY, 0) // size appears to be ignored in the thrift lib
	keys.Push(key)
	err := r.pool.run(func(c *connection) (*cassandra.InvalidRequestException, *cassandra.UnavailableException, *cassandra.TimedOutException, error) {
		var ire *cassandra.InvalidRequestException
		var ue *cassandra.UnavailableException
		var te *cassandra.TimedOutException
		var err error

		ret, ire, ue, te, err = c.client.MultigetSlice(keys, cp, sp, cassandra.ConsistencyLevel(r.consistencyLevel))
		return ire, ue, te, err
	})

	if err != nil {
		return nil, err
	}

	return rowFromTMapColumns(key, ret), nil
}

func rowsFromTListKeySlice(tl thrift.TList) []*Row {
	if tl == nil || tl.Len() <= 0 {
		return make([]*Row, 0)
	}
	r := make([]*Row, 0)
	for keySliceI := range tl.Iter() {
		keySlice := keySliceI.(*cassandra.KeySlice)
		key := keySlice.Key
		row := rowFromTListColumns(key, keySlice.Columns)
		if row != nil {
			r = append(r, row)
		}
	}
	return r
}

func (w *writer) addWriter(cf string, key []byte) *cassandra.Mutation {
	tm := cassandra.NewMutation()
	var cfMuts thrift.TMap
	im, exists := w.writers.Get(key)
	if !exists {
		cfMuts = thrift.NewTMap(thrift.STRING, thrift.LIST, 1)
		w.writers.Set(key, cfMuts)
	} else {
		cfMuts = im.(thrift.TMap)
	}
	var mutList thrift.TList
	im, exists = cfMuts.Get(cf)
	if !exists {
		mutList = thrift.NewTList(thrift.STRUCT, 1)
		cfMuts.Set(cf, mutList)
	} else {
		mutList = im.(thrift.TList)
	}
	mutList.Push(tm)
	return tm
}