Documents in multiple folders

Question

What I need to acheive is a search for all documents that appear in folders A, B and C with certain attributes.
I started with find all documents in Folder A using a FolderRestrictQualification and the documents have search attributes, no problems.
How do I check if the documents also appear in Folders B & C? I tried getting all the results and checking the folderpaths to see if B & C were present but the overhead of checking the results is prohibitive. I think I need to expand my seach statement but need some help.
Thanks in advance

Answer 1

just construct a search tree using AND clauses, like this:
AND
frqA AND
frqB frqC
FolderRestrictQualification frqA = new FolderRestrictQualification();
FolderRestrictQualification frqB = new FolderRestrictQualification();
FolderRestrictQualification frqC = new FolderRestrictQualification();
SearchClause secondAndClause = new SearchClause(frqB, frqC, SearchClause.AND);
SearchClause firstAndClause = new SearchClause(frqA, secondAndClause, SearchClause.AND);