In the previous sections, you began constructing and using more complex queries

from inside a controller. In order to isolate, test and reuse these queries,

it's a goodidea to create a custom repository class for your entity and

it's a goodpractise to create a custom repository class for your entity and

add methods with your query logic there.

To do this, add the name of the repository class to your mapping definition.

To do this, add the name of the repository class to your mapping definition:

..configuration-block::