I have setup using spring-data-neo4j v 4.2.1, neo4j-ogm v 2.1.2.
I need embedded neo4j server with specific configuration for testing. cypher.forbid_shortestpath_common_nodes=false
.
I tried this without success in spring @Configuration bean:
@Bean
public org.neo4j.ogm.config.Configuration getConfiguration() {
org.neo4j.ogm.config.Configuration config = new org.neo4j.ogm.config.Configuration();
config.driverConfiguration().setDriverClassName("org.neo4j.ogm.drivers.embedded.driver.EmbeddedDriver");
config.set("cypher.forbid_shortestpath_common_nodes", false);
return config;
}
Please, how do I set it up within spring java configuration?
The cypher.forbid_shortestpath_common_nodes
is Neo4j setting, not SDN/OGM so you need to provide this to the database when you create it.
Ideally the configuration for an embedded database would look similar to this:
@Configuration
@EnableNeo4jRepositories(basePackageClasses = UserRepository.class)
@ComponentScan(basePackageClasses = UserService.class)
static class EmbeddedConfig {
@Bean(destroyMethod = "shutdown")
public GraphDatabaseService graphDatabaseService() {
GraphDatabaseService graphDatabaseService = new GraphDatabaseFactory()
.newEmbeddedDatabaseBuilder(new File("target/graph.db"))
.setConfig(GraphDatabaseSettings.forbid_shortestpath_common_nodes, "false")
.newGraphDatabase();
return graphDatabaseService;
}
@Bean
public SessionFactory getSessionFactory() {
org.neo4j.ogm.config.Configuration configuration = new org.neo4j.ogm.config.Configuration();
EmbeddedDriver driver = new EmbeddedDriver(graphDatabaseService());
Components.setDriver(driver);
return new SessionFactory(configuration, User.class.getPackage().getName());
}
@Bean
public Neo4jTransactionManager transactionManager() throws Exception {
return new Neo4jTransactionManager(getSessionFactory());
}
}
However this does not work for SDN 4.2.x, but there is a workaround:
@Bean
public SessionFactory getSessionFactory() {
org.neo4j.ogm.config.Configuration configuration = new org.neo4j.ogm.config.Configuration();
// Register your configuration here, this will confuse OGM so the driver you set below won't be destroyed
Components.configure(configuration);
// Register your driver
EmbeddedDriver driver = new EmbeddedDriver(graphDatabaseService());
Components.setDriver(driver);
// Set driver class name so you won't get NPE
configuration.driverConfiguration().setDriverClassName("org.neo4j.ogm.drivers.embedded.driver.EmbeddedDriver");
return new SessionFactory(configuration, User.class.getPackage().getName());
}