[repo] optimize massive insertion/deletion by using the new set_operation function Idea is that on massive insertion, cost of handling the list of operation become non negligeable, so we should minimize the number of operations in that list. The set_operation function ease usage of operation associated to data in session.transaction_data, and we only add the operation when data set isn't initialized yet, else we simply add data to the set. The operation then simply process accumulated data.

.. winclude:: search_sample_queries

You can as well type complex queries using the RQL_ query language, 
used every where to build dynamic pages of this site.

You can use one of the following prefixes to specify which kind of search you
want: 

* `rql` : RQL query
* `text` : full text search

.. _RQL: doc/tut_rql