Provides Spring Data Neo4j integration patterns for Spring Boot applications. Use when you need to work with a graph database, Neo4j nodes and relationships, Cypher queries, or Spring Data Neo4j. Creates node entities with @Node annotation, defines relationships with @Relationship, writes Cypher queries using @Query, configures imperative and reactive Neo4j repositories, implements graph traversal patterns, and sets up testing with embedded databases.
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Provides Spring Data Neo4j integration patterns for Spring Boot applications. Use when you need to work with a graph database, Neo4j nodes and relationships, Cypher queries, or Spring Data Neo4j. Creates node entities with @Node annotation, defines relationships with @Relationship, writes Cypher queries using @Query, configures imperative and reactive Neo4j repositories, implements graph traversal patterns, and sets up testing with embedded databases.
allowed-tools
Read, Write, Edit, Bash, Glob, Grep
Spring Data Neo4j Integration Patterns
Overview
Provides Spring Data Neo4j integration patterns for Spring Boot applications. Covers node entity mapping with @Node and @Relationship, repository configuration (imperative and reactive), custom Cypher queries with @Query, and integration testing with embedded Neo4j databases.
When to Use
Use this skill when working with:
Graph databases and Neo4j integration in Spring Boot
Node entities, relationships, and Cypher queries
Spring Data Neo4j repositories (imperative or reactive)
Use @Param annotation when parameter name differs from method parameter
MATCH specifies node patterns and relationships
WHERE filters results
RETURN defines what to return
Testing Strategies
Neo4j Harness for Integration Testing
Test Configuration:
@DataNeo4jTestclassBookRepositoryIntegrationTest {
privatestatic Neo4j embeddedServer;
@BeforeAllstaticvoidinitializeNeo4j() {
embeddedServer = Neo4jBuilders.newInProcessBuilder()
.withDisabledServer() // No HTTP access needed
.withFixture(
"CREATE (b:Book {isbn: '978-0547928210', " +
"name: 'The Fellowship of the Ring', year: 1954})" +
"-[:WRITTEN_BY]->(a:Author {id: 1, name: 'J. R. R. Tolkien'}) " +
"CREATE (b2:Book {isbn: '978-0547928203', " +
"name: 'The Two Towers', year: 1956})" +
"-[:WRITTEN_BY]->(a)"
)
.build();
}
@AfterAllstaticvoidstopNeo4j() {
embeddedServer.close();
}
@DynamicPropertySourcestaticvoidneo4jProperties(DynamicPropertyRegistry registry) {
registry.add("spring.neo4j.uri", embeddedServer::boltURI);
registry.add("spring.neo4j.authentication.username", () -> "neo4j");
registry.add("spring.neo4j.authentication.password", () -> "null");
}
@Autowiredprivate BookRepository bookRepository;
@TestvoidgivenBookExists_whenFindOneByTitle_thenBookIsReturned() {
Bookbook= bookRepository.findOneByTitle("The Fellowship of the Ring");
assertThat(book.getIsbn()).isEqualTo("978-0547928210");
}
}
Examples
Example 1: Saving and Retrieving Entities
Input:
MovieEntitymovie=newMovieEntity("The Matrix", "Welcome to the Real World", 1999);
movieRepository.save(movie);
MovieEntityfound= movieRepository.findOneByTitle("The Matrix");
Output:
MovieEntity{
title="The Matrix",
description="Welcome to the Real World",
year=1999,
actorsAndRoles=[],
directors=[]
}
[
Book{isbn="978-0547928210", name="The Fellowship of the Ring", year=1954},
Book{isbn="978-0547928203", name="The Two Towers", year=1956},
Book{isbn="978-0547928227", name="The Return of the King", year=1957}
]
Progress from basic to advanced examples covering complete movie database, social network patterns, e-commerce product catalogs, custom queries, and reactive operations.
