CLI, Query Subquery, Chaining Query Results

Hello 

[Problem] From a selection of Items, I want which items are changed since a given date. The selection of items must be user definable (via the query builder UI) and we will call this the Items-Of-Interest Query (IOI)  . The changed since query (CS). The execution of the command/query will be done via the Java-CLI API. 

From a functional viewpoint I want to de following CS(IOI, timestamp) . Note, the timestamp will be increment every 5 minutes or so. 

What would be the best solution. 

1) im viewquery IOI and modify it 

2) get the result of the IOI query and put it as the selection of the CS query

3) insert the IOI query into the CS query

4)  ... 

Any help is highly appreciated! 

Thanks in advance

Arjen