spring-data-neo4j

[source,xml,subs="verbatim,attributes"]

and configure your database connection:

[source,properties]

spring.neo4j.uri=bolt://localhost:7687 spring.neo4j.authentication.username=neo4j spring.neo4j.authentication.password=secret

Please have a look at our https://docs.spring.io/spring-data/neo4j/docs/current/reference/html/#reference[manual] for an overview about the architecture, how to define mappings and more.

==== Without Spring Boot

If you are using a plain Spring Framework project without Spring Boot, please add this Maven dependency:

[source,xml,subs="verbatim,attributes"]

and configure SDN for reactive database access like this:

[source,java]

@Configuration @EnableReactiveNeo4jRepositories @EnableTransactionManagement class MyConfiguration extends AbstractReactiveNeo4jConfig {

@Bean
public Driver driver() {
    return GraphDatabase.driver("bolt://localhost:7687", AuthTokens.basic("neo4j", "secret"));
}

@Override
protected Collection<String> getMappingBasePackages() {
    return Collections.singletonList(Person.class.getPackage().getName());
}

}

The imperative version looks pretty much the same but uses EnableNeo4jRepositories and AbstractNeo4jConfig.

IMPORTANT: We recommend Spring Boot, the automatic configuration and especially the dependency management through the Starters in contrast to the manual work of managing dependencies and configuration.

Here is a quick teaser of a reactive application using Spring Data Repositories in Java:

[source,java]

@Node public class Person { private Long id; private String name;

public Person(String name) {
    this.name = name;
}

}

@Repository interface PersonRepository extends ReactiveNeo4jRepository<Person, Long> {

Flux<Person> findAllByName(String name);

Flux<Person> findAllByNameLike(String name);

}

@Service class MyService {

@Autowired
private final PersonRepository repository;

@Transactional
public Flux<Person> doWork() {

    Person emil = new Person("Emil");
    Person gerrit = new Person("Gerrit");
    Person michael = new Person("Michael");

    // Persist entities and relationships to graph database
    return this.repository.saveAll(Flux.just(emil, gerrit, michael));
}

}

=== Building SDN

Please have a look at the documentation: https://docs.spring.io/spring-data/neo4j/reference/#building-sdn-rx[Building SDN].

== Getting Help

Having trouble with Spring Data? We’d love to help!

• Check the https://docs.spring.io/spring-data/neo4j/reference/[reference documentation], and https://docs.spring.io/spring-data/neo4j/docs/current/api/[Javadocs].
• Learn the Spring basics – Spring Data builds on Spring Framework, check the https://spring.io[spring.io] web-site for a wealth of reference documentation. If you are just starting out with Spring, try one of the https://spring.io/guides[guides].
• If you are upgrading, check out the https://github.com/spring-projects/spring-data-commons/wiki/#release-notes[changelog of the individual release version] for "new and noteworthy" features.
• Ask a question - we monitor https://stackoverflow.com[stackoverflow.com] for questions tagged with https://stackoverflow.com/questions/tagged/spring-data-neo4j[spring-data-neo4j].
• Report bugs with Spring Data Neo4j at https://github.com/spring-projects/spring-data-neo4j/issues[github.com/spring-projects/spring-data-neo4j/issues].

== Reporting Issues

Spring Data uses GitHub as issue tracking system to record bugs and feature requests. If you want to raise an issue, please follow the recommendations below:

• Before you log a bug, please search the https://github.com/spring-projects/spring-data-neo4j/issues[issue tracker] to see if someone has already reported the problem.
• If the issue doesn't already exist, https://github.com/spring-projects/spring-data-neo4j/issues/new[create a new issue].
• Please provide as much information as possible with the issue report, we like to know the version of Spring Data Neo4j, the database version and the JVM version that you are using.
• If you need to paste code, or include a stack trace use Markdown +++```+++ escapes before and after your text.
• If possible try to create a test-case or project that replicates the issue. Attach a link to your code or a compressed file containing your code.

== License

Spring Data Neo4j is Open Source software released under the https://www.apache.org/licenses/LICENSE-2.0.html[Apache 2.0 license].