Neo4j database not persisting using Spring Data Neo4j

Question

I'm starting a project using Neo4j and Spring Data Neo4j. I want my program to use a local database that already contains my data (as opposed to loading the data each time on startup) since I have a lot of data that needs to be loaded into the database. I've tried setting up a test case that populates a database with my data in order to accomplish this goal. However, the data in the database does not appear to persist after my tests have finished running: I look at the database using the neo4j console/shell and find it is empty.

I've constructed a small example project that's also not working. Any insight into what I'm doing incorrectly would be appreciated.

Node entity class:

@NodeEntity
public class Entity {
    @GraphId private Long graphId;
    private String name;
    public Entity() { }
    public Entity(String name) {
        this.name = name;
    }
    public String getName() {
        return name;
    }
}

Repository class:

public interface EntityRepository extends GraphRepository<Entity> { }

My test class:

@ContextConfiguration(locations = "classpath:applicationContext.xml")
@RunWith(SpringJUnit4ClassRunner.class)
@Transactional
public class DatabaseTest {
    @Autowired Neo4jTemplate template;
    @Autowired EntityRepository entityRepository;
    @Test
    public void testCreatingEntities() {
        Entity entity1 = new Entity("one");
        Entity entity2 = new Entity("two");
        template.save(entity1);
        template.save(entity2);
        Iterator<Entity> entityIterator = entityRepository.findAll().iterator();
        List<Entity> entityList = IteratorUtils.toList(entityIterator);
        System.out.println("Number of entities = " + entityList.size());
        for(Entity entity : entityList) {
            System.out.println("Entity " + entity.getName());
        }
    }
}

applicationContext.xml:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:neo4j="http://www.springframework.org/schema/data/neo4j"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/data/neo4j
        http://www.springframework.org/schema/data/neo4j/spring-neo4j.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd">
    <context:spring-configured/>
    <context:annotation-config/>
    <context:component-scan base-package="personal.neo4j">
        <context:exclude-filter type="annotation"
            expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>
    <neo4j:config storeDirectory="data/test.db"
        base-package="personal.neo4j"/>
    <neo4j:repositories base-package="personal.neo4j"/>
    <tx:annotation-driven/>
</beans>

Test output:

Running personal.neo4j.DatabaseTest
Number of entities = 2
Entity one
Entity two

Using libraries:
Java 1.7
Spring 3.2.8.RELEASE
Neo4j 2.0.2
Spring Data Neo4j 3.0.2.RELEASE
JUnit 4.11

Thanks for your help,

Thomas

TinaC TinaC · Accepted Answer · 2014-04-23T22:32:19

See if this thread helps: http://forum.spring.io/forum/spring-projects/data/53804-commit-transactions-running-springjunit4classrunner

Looks like SpringJUnit4ClassRunner will rollback all transactions, unless explicitly told otherwise.

Neo4j database not persisting using Spring Data Neo4j

1 Answers