Database Reference
In-Depth Information
Filtering Consumption for Users
One practical use of the consumption model is to create a content trail for users, as shown in Figure
11-14
. As a user
clicks on items in the scrolling product stream, the interaction is captured using
createUserView
, which ultimately
returns a
List
of relationship objects of the
VIEWED
type called
MappedProductUserViews
, which are located in the
MappedProductUserViewsRepository
.
Figure 11-14.
The Scrolling Product and Product Trail page
In the
ConsumptionController
, take a look at the
createUserProductViewRel
method to see how the process
begins inside the controller. The controller method first saves the view and then returns the complete history of views
using the
getProductTrail
, which can be found in the
MappedProductUserViewsRepository
interface and is shown
in Listing 11-48. The process is started when the
createUserProductViewRel
function is called, which is located in
graphstory.js
.
Listing 11-48.
getProductTrail
in the
MappedProductUserViewsRepository
@Query("MATCH (u:User { username: {username} })-[r:VIEWED]->(p) " +
" RETURN p.title as title, r.dateAsStr as dateAsStr " +
" ORDER BY r.timestamp DESC ")
List<MappedProductUserViews>
getProductTrail
(@Param("username") String username);
