| /* |
| Licensed to the Apache Software Foundation (ASF) under one |
| or more contributor license agreements. See the NOTICE file |
| distributed with this work for additional information |
| regarding copyright ownership. The ASF licenses this file |
| to you under the Apache License, Version 2.0 (the |
| "License"); you may not use this file except in compliance |
| with the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, |
| software distributed under the License is distributed on an |
| "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| KIND, either express or implied. See the License for the |
| specific language governing permissions and limitations |
| under the License. |
| */ |
| |
| const gremlin = require('gremlin'); |
| const traversal = gremlin.process.AnonymousTraversalSource.traversal; |
| const DriverRemoteConnection = gremlin.driver.DriverRemoteConnection; |
| |
| async function main() { |
| const dc = new DriverRemoteConnection('ws://localhost:8182/gremlin'); |
| const g = traversal().withRemote(dc); |
| |
| // Basic Gremlin: adding and retrieving data |
| const v1 = await g.addV('person').property('name','marko').next(); |
| const v2 = await g.addV('person').property('name','stephen').next(); |
| const v3 = await g.addV('person').property('name','vadas').next(); |
| |
| // Be sure to use a terminating step like next() or iterate() so that the traversal "executes" |
| // Iterate() does not return any data and is used to just generate side-effects (i.e. write data to the database) |
| await g.V(v1.value).addE('knows').to(v2.value).property('weight',0.75).iterate(); |
| await g.V(v1.value).addE('knows').to(v3.value).property('weight',0.75).iterate(); |
| |
| // Retrieve the data from the "marko" vertex |
| const marko = await g.V().has('person','name','marko').values('name').toList(); |
| console.log("name: " + marko[0]); |
| |
| // Find the "marko" vertex and then traverse to the people he "knows" and return their data |
| const peopleMarkoKnows = await g.V().has('person','name','marko').out('knows').values('name').toList(); |
| peopleMarkoKnows.forEach((person) => { |
| console.log("marko knows " + person); |
| }); |
| |
| await dc.close(); |
| } |
| |
| main(); |