/**
* Get a single row's columns, which columns to get are defined by:
*
* @param colfam The name of the column family
* @param rowkey Row key
* @param start. The column name to start the slice with. This attribute is not required, though there is no default value,
* and can be safely set to '', i.e., an empty byte array, to start with the first column name. Otherwise, it
* must a valid value under the rules of the Comparator defined for the given ColumnFamily.
* @param finish. The column name to stop the slice at. This attribute is not required, though there is no default value,
* and can be safely set to an empty byte array to not stop until 'count' results are seen. Otherwise, it
* must also be a valid value to the ColumnFamily Comparator.
* @param reversed. Whether the results should be ordered in reversed order. Similar to ORDER BY blah DESC in SQL.
* @param count. How many columns to return. Similar to LIMIT in SQL. May be arbitrarily large, but Thrift will
* materialize the whole result into memory before returning it to the client, so be aware that you may
* be better served by iterating through slices by passing the last value of one call in as the 'start'
* of the next instead of increasing 'count' arbitrarily large.
*/
func (c *CassandraConnection) GetRange(cf, rowkey, start, finish string, reversed bool, colLimit int) (cassCol []*cassandra.Column, err error) {
sp := cassandra.NewSlicePredicate()
cp := NewColumnParent(cf)
sp.SliceRange = NewSliceRange(start, finish, reversed, colLimit)
return c.getslice(rowkey, cp, sp)
}
func (c *CassandraConnection) GetCols(cf, rowkey string, cols []string) (cassCol []*cassandra.Column, err error) {
sp := cassandra.NewSlicePredicate()
cp := NewColumnParent(cf)
//ColumnNames thrift.TList "column_names"; // 1
l := thrift.NewTList(thrift.STRING, 0) // auto-expands, starting length should be 0
for i := 0; i < len(cols); i++ {
l.Push(cols[i])
}
sp.ColumnNames = l
return c.getslice(rowkey, cp, sp)
}