使用嵌入式驱动程序时，将过程部署​​到Neo4J [英] Deploy a Procedure to Neo4J when using the embedded driver

问题描述

我有一些逻辑需要直接节点访问neo4j，但其他应用程序使用Spring Data Neo4j（SDN）来简化。我想用@Procedure的程序，但是我不确定在使用neo4j嵌入式驱动程序和SDN4时如何使用该程序。我的配置非常准确，如下所示：

I have some logic which needs direct node access to neo4j but the rest of the app using Spring Data Neo4j (SDN) for simplicity. I thought to use a procedure with @Procedure, but I'm not sure how to use that procedure when using the neo4j embedded driver and SDN4. My configuration is very barebones as below:

@Configuration
@EnableNeo4jRepositories(basePackages = "recommender.repository")
@ComponentScan(basePackages = "recommender")
@EnableTransactionManagement
public class MyNeo4jConfiguration extends Neo4jConfiguration {

@Bean
public SessionFactory getSessionFactory() {

    System.out.println("******* GET SESSION FACTORY!!!!");
    // with domain entity base package(s)
    return new SessionFactory("recommender.model");
}

// needed for session in view in web-applications
@Bean
@Scope(value = "session", proxyMode = ScopedProxyMode.TARGET_CLASS)
public Session getSession() throws Exception {
    return super.getSession();
}

这里有一个属性文件：

#EmbeddedSetup
driver=org.neo4j.ogm.drivers.embedded.driver.EmbeddedDriver
#URI=file:/neo4j/data/graph.db

使用该设置我可以在哪里放置带有@Procedure和@Context的类（用于db访问）SDN的实施在战争部署期间可以访问它。

With that setup where can I place the class with @Procedure and @Context (for the db access) where SDN's implementation has access to it during war deployment.

推荐答案

SDN本身没有管理程序的功能。
但是，有一种方法可以访问底层的GraphDatabaseService：

SDN itself has no functionality to manage procedures for you. However, there is a way to access the underlying GraphDatabaseService:

 EmbeddedDriver embeddedDriver = (EmbeddedDriver) Components.driver();
 GraphDatabaseService databaseService = embeddedDriver.getGraphDatabaseService();

使用此功能，您可以注册您的程序

Using this, you can register your procedure

((GraphDatabaseAPI) getDatabase()).getDependencyResolver().resolveDependency(Procedures.class).register(YourProcedure.class);

但是，不确定这是否适用于应用程序类路径中的过程类 - 值得尝试。

However, not really sure if this works with your procedure class in the application classpath- worth trying though.

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