我正在使用shutdown hook和apoc程序注册启动Neo4j嵌入式应用程序。我正在使用apoc.periodic.iterate过程调用{batchSize：100，parallel：true，iterateList：true} config。获得Result后，我正在调用graphdb.shutdown。调用shutdown方法后，DB没有关闭。我错过了什么吗？
公共课APOCTest {
private static final File DB_PATH = new File("I://apps//neo4j-enterprise-3.1.2//data//databases//graph.db");
public static void main(String[] args) throws JsonParseException, UnsupportedEncodingException, IOException {
System.out.println("Neo4j starting " + new Date());
GraphDatabaseService graphDb = new HighlyAvailableGraphDatabaseFactory().newEmbeddedDatabaseBuilder(DB_PATH)
.loadPropertiesFromFile("I://apps//standalone//neo4j.conf").newGraphDatabase();
registerShutdownHook(graphDb);
registerProcedures(graphDb);
System.out.println("Neo4j started:: " + new Date());
createData(graphDb);
deleteData(graphDb);
graphDb.shutdown();
}
private static void registerProcedures(final GraphDatabaseService graphDb) {
Procedures procedures = ((GraphDatabaseAPI) graphDb).getDependencyResolver()
.resolveDependency(Procedures.class);
List<Class<?>> apocProcedures = asList(Coll.class, apoc.map.Maps.class, Json.class, Create.class,
apoc.date.Date.class, FulltextIndex.class, apoc.lock.Lock.class, LoadJson.class, Xml.class,
PathExplorer.class, Meta.class, GraphRefactoring.class, apoc.periodic.Periodic.class);
apocProcedures.forEach((proc) -> {
try {
procedures.registerProcedure(proc);
procedures.registerFunction(proc);
} catch (KernelException e) {
throw new RuntimeException("Error registering " + proc, e);
}
});
}
private static void registerShutdownHook(final GraphDatabaseService graphDb) {
Runtime.getRuntime().addShutdownHook(new Thread() {
@Override
public void run() {
graphDb.shutdown();
}
});
}
private static void createData(final GraphDatabaseService graphDb) {
System.out.println("createData " + new Date());
Transaction tx = graphDb.beginTx();
try {
for (int i = 1; i < 900000; i++) {
Node n = graphDb.createNode(Label.label("Test"));
n.setProperty("createDate", System.currentTimeMillis());
if (i % 30000 == 0) {
tx.success();
tx.close();
tx = graphDb.beginTx();
}
}
tx.success();
} finally {
tx.close();
}
System.out.println("createData " + new Date());
}
private static void deleteData(final GraphDatabaseService graphDb) {
System.out.println("deleteData " + new Date());
try (Transaction tx = graphDb.beginTx()) {
Map<String, Object> map = new HashMap<String, Object>();
map.put("oldStmtDate1", 1);
String query = "CALL apoc.periodic.iterate(\"MATCH (n:Test) WHERE n.createDate > {oldStmtDate} RETURN n \",\"DETACH DELETE n\",{batchSize:100,parallel:true,iterateList:true,params:{oldStmtDate:{oldStmtDate1}}})";
Result r = graphDb.execute(query, map);
System.out.println(r.next());
tx.success();
}
System.out.println("deleteData " + new Date());
}
}