def get_object(self, request):
"""
For OPDS 1.1 We should handle a query for search terms
- and atom:author, atom:contributor, atom:title
+ and criteria provided either as opensearch or 'inline' query.
+ OpenSearch defines fields: atom:author, atom:contributor (treated as translator),
+ atom:title. Inline query provides author, title, categories (treated as book tags),
+ description (treated as content search terms).
+
if search terms are provided, we shall search for books
according to Hint information (from author & contributror & title).