Audits with Spring Data Neo4j

Question

I\'m currently working on a project that makes use of Spring Data Neo4j. Whenever a NodeEntity is created, I would like to create a referenced Audit NodeEntity that contains

Answer 1

Spring Data Neo4j (SDN) introduced the concept of lifecycle events in version 2.1. This will also work for cascaded entities.

Answer 2

Since Spring Data Neo4j 2.2, we can use the AuditingEventListener for the auditing of entities. Spring Data 1.5 offers the @CreatedDate, @CreatedBy, @LastModifiedDate and @LastModifiedBy annotations. You can use them as follows:

@NodeEntity
public class Entity {

    @GraphId
    private Long id;

    @CreatedDate
    private Long date;

}

Make sure to configure the AuditingEventListener:

@Configuration("db")
@EnableNeo4jRepositories(basePackages = { "your.package" })
@EnableTransactionManagement
public class DatabaseSpringConfiguration extends Neo4jConfiguration {

    @Bean(destroyMethod = "shutdown")
    public EmbeddedGraphDatabase graphDatabaseService() {
        return new EmbeddedGraphDatabase("data/neo4j.db");
    }

    @Bean
    public AuditingEventListener auditingEventListener() throws Exception {
        return new AuditingEventListener(new IsNewAwareAuditingHandler<Object>(isNewStrategyFactory()));
    }

}