以下代碼打印id: 0
。爲什麼在空的圖形數據庫中有一個節點?爲什麼neo4j總是有單個節點?
GraphDatabaseService db = new GraphDatabaseFactory().newEmbeddedDatabase(DB_LOCATION);
GlobalGraphOperations graphOperations = GlobalGraphOperations.at(db);
System.out.println("id: "+graphOperations.getAllNodes().iterator().next().getId());