I need to store data of all activities by user's followies in single row. I am trying to do that making use of composite column names in a single user specific row named 'rowX'.

On any activity by a user's followie on an item, a column is stored in 'rowX'. The column has a composite type column name made up of itemId+userId (which makes it unique col. name) in rowX. (& column value contains the activity data related to that item by that followie)

Now I want to retrieve activity by all users on a list of items. So I need to retrieve all composite columns with composite's first component matching the itemId. Is it possible to do such a query to Cassandra ? I am using Hector.