OrientDB

问题 I'm trying to find the fastest way to import edges to OrientDB Graph from CSV. (My OrientDB version is 2.1.15.) Now I have a graph with 100k Vertices and 1,5M Edges. Soon I will increase its size to 100M Vertices and 100B+ Edges and I don't want to wait till import ends for months :) I've tried to do it with different ways: Default JSON ETL. Edges load rate is about 200-300 rows/sec. Very slow, it works about 1,5h. Tried to change "Tx" mode and other properties, it didnt make any changes in

问题 I'm trying to find the fastest way to import edges to OrientDB Graph from CSV. (My OrientDB version is 2.1.15.) Now I have a graph with 100k Vertices and 1,5M Edges. Soon I will increase its size to 100M Vertices and 100B+ Edges and I don't want to wait till import ends for months :) I've tried to do it with different ways: Default JSON ETL. Edges load rate is about 200-300 rows/sec. Very slow, it works about 1,5h. Tried to change "Tx" mode and other properties, it didnt make any changes in

问题 I have been messing around with orientdb sql, and I was wondering if there is a way to update an edge of a vertex, together with some data on it. assuming I have the following data: Vertex: Person, Room Edge: Inside (from Person to Room) something like: UPDATE Persons SET phone=000000, out_Inside=( select @rid from Rooms where room_id=5) where person_id=8 obviously, the above does not work. It throws exception: Error: java.lang.ClassCastException: com.orientechnologies.orient.core.id

问题 I have been messing around with orientdb sql, and I was wondering if there is a way to update an edge of a vertex, together with some data on it. assuming I have the following data: Vertex: Person, Room Edge: Inside (from Person to Room) something like: UPDATE Persons SET phone=000000, out_Inside=( select @rid from Rooms where room_id=5) where person_id=8 obviously, the above does not work. It throws exception: Error: java.lang.ClassCastException: com.orientechnologies.orient.core.id

问题 Is there a simple way to update the name of all of a type of existing edge relationships? alter class EDGE_NAME name NEW_EDGE_NAME updates the name of the base edge class, but doesn't affect any existing relationships. ie: create class Person extends V create class Car extends V create class OWNS extends E create vertex Person set name="Bob" create vertex Car set name="Jeep" create edge OWNS from (select from Person where name="Bob") to (select from Car where name="Jeep") alter class OWNS

问题 How do I get elapsed query time in the REST with OrientDB? I need a json field that shows the elapsed query time. Thanks. 回答1: You can use http://localhost:2480/command/name your db/sql/explain your query Hope it helps. 来源： https://stackoverflow.com/questions/35316652/orientdb-how-do-i-get-elapsed-query-time-in-the-rest-with-orientdb

问题 I have imported hierarchical data into OrientDB from RDMBS using OETL. In RDBMS we used to store parentId in the same row. e.g. the table structure is something like this: ID - Name - Parent_ID Corp - Corporate Office - Corp D1 - District Office 1 - Corp D2 - District Office 2 - Corp SO1 - Small Office 1 - D1 SO2 - Small Office 2 - D2 SO3 - Small Office 3 - D1 Now each row is a node in Orientdb. I want to create an edge (ParentOf) from say Corp to D1 and D1 to SO1 and so on. How can I write a

问题 What is the recommended way to manage OrientDB connections in Express.js or any web application for that matter? Connection per request? Would be using the oriento Node.js driver 回答1: If you are using Oriento, you can try connection pooling, as per PR #7 you can set it like this: var server = Oriento({ user: 'root', password: 'foo', pool: { max: 10 // use a maximum of 10 sockets in the pool } }); Please bear in mind that at some point connection pooling config was hidden from Oriento's README

问题 I had a task to create a simple application using eclipse as a tool and OrientDB through java, u can look into the code that I have posted below and I have connected to the OrientDB server, I'm getting the output on the console window but I want to command from the web page that is on client side. Please help me out in firing queries on the client side. package test; import com.orientechnologies.orient.core.sql.OCommandSQL; import com.tinkerpop.blueprints.Vertex; import com.tinkerpop

问题 I am trying to understand how to use the LUCENE Spatial queries in Orientdb 2.2.17 using pyorient. I have note yet figure it out how to select all the properties of a point vertex class that is within a polygon vertex from another class. Region Vertex Class has two properties: name coordinates (EMBEDDED OPolygon) LUCENE index CREATE CLASS Region EXTENDS V CREATE PROPERTY Region.name IF NOT EXISTS STRING CREATE PROPERTY Region.coordinates IF NOT EXISTS EMBEDDED OPolygon CREATE INDEX Region