public boolean saveResearch(int userId, Filtre fltr){
		Connection conn = null;
		PreparedStatement stShop = null;

		try{
			conn=getConnection();
			conn.setAutoCommit(false);
			stShop = conn.prepareStatement("insert into history set idclient=?,research=? "); //la requ�te
			stShop.setInt(1, userId) ;
			stShop.setString(2, fltr.getResearch());

			stShop.executeUpdate();
			conn.commit();

		} catch (BatchUpdateException e){
			System.out.println("Research  is already in the database");
			return false;
		} catch (SQLException e){
			System.out.println("Error connecting to the database");
			e.printStackTrace();
			return false;
		} finally {
			if (stShop != null){
				try {
					stShop.close();
				} catch (Exception ex) {
				}
			}
			if (conn != null) {
				try {
					conn.close();
				} catch (Exception e) {
				}
			}
		}
		return true;
	}