anchor.diff:  Now you can use Spring Security within your queries:
   
   ====
  -[source,java]
  +.Java
  +[source,java,role="primary"]
   ----
   @Repository
   public interface MessageRepository extends PagingAndSortingRepository<Message,Long> {
  
positive.code: = Spring Data Integration
  
  Spring Security provides Spring Data integration that allows referring to the current user within your queries.
  It is not only useful but necessary to include the user in the queries to support paged results, since filtering the results afterwards would not scale.
  
  [[data-configuration]]
  == Spring Data & Spring Security Configuration
  
  To use this support, add the `org.springframework.security:spring-security-data` dependency and provide a bean of type `SecurityEvaluationContextExtension`.
  In Java configuration, this would look like:
  
  ====
  [source,java]
  ----
  @Bean
  public SecurityEvaluationContextExtension securityEvaluationContextExtension() {
  	return new SecurityEvaluationContextExtension();
  }
  ----
  ====
  
negative.code: 	Page<Message> findInbox(Pageable pageable);
  }
  ----
  
  .Kotlin
  [source,kotlin,role="secondary"]
  ----
  @Repository
  interface MessageRepository : PagingAndSortingRepository<Message,Long> {
  	@Query("select m from Message m where m.to.id = ?#{ principal?.id }")
  	fun findInbox(pageable: Pageable): Page<Message>
  }
  ----
  ====
  
  This checks to see if the `Authentication.getPrincipal().getId()` is equal to the recipient of the `Message`.
  Note that this example assumes you have customized the principal to be an Object that has an id property.
  By exposing the `SecurityEvaluationContextExtension` bean, all of the xref:servlet/authorization/expression-based.adoc#common-expressions[Common Security Expressions] are available within the Query.
  