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139 lines
3.2 KiB
139 lines
3.2 KiB
package net.jrtechs.www.graphDB;
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import org.apache.tinkerpop.gremlin.process.remote.RemoteConnection;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.util.stream.IntStream;
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/**
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* Class used to test connection with remote database and issue queries while
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* developing our project
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*
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* @author Jeffery Russell 8-25-18
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*/
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public class GremlinConsole
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{
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/** Connection to graph server **/
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private GraphConnection connection;
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/**
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* Instantiates the remote connection
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*/
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public GremlinConsole()
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{
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this.connection = new GraphConnection();
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}
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/**
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* Fetches remote connection of the console
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*
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* @return
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*/
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public GraphConnection getConnection()
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{
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return this.connection;
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}
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/**
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* Gets input from the user and queries the graph server and prints out
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* the output.
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*
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* There is excessive try catching to prevent a bad query/input from crashing
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* the console
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*/
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public void run()
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{
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BufferedReader br = null;
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try
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{
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br = new BufferedReader(new InputStreamReader(System.in));
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while (true)
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{
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System.out.print("Enter Query: ");
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String input = br.readLine();
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if ("q".equals(input))
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{
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System.out.println("Exit!");
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System.exit(0);
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}
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// ResultSet set = this.connection.queryGraph(input);
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// try
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// {
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// set.forEach(System.out::println);
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// }
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// catch (Exception ex)
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// {
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// ex.printStackTrace();
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// }
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}
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}
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catch (Exception e)
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{
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e.printStackTrace();
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}
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finally
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{
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if (br != null)
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{
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try
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{
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br.close();
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} catch (IOException e)
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{
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e.printStackTrace();
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}
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}
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}
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}
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/**
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* Makes this script runnable as a stand alone application for use
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*
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* To run queries from command line arguments, surround them with double
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* quotes and add spaces between queries
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*
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* ex usage:
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* "g.V().hasLabel('Satellite').values('OBJECT_ID')" "g.V().hasLabel
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* ('Country').has('abr', 'US').valueMap()"
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*
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* @param args
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*/
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public static void main(String args[]) throws Exception
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{
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// GremlinConsole console = new GremlinConsole();
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//
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// //don't worry about this lambda
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// IntStream.range(0, args.length)
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// .forEach(i-> console.getConnection()
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// .queryGraph(args[i])
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// .forEach((System.out::println)));
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//
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// console.run();
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GraphConnection con = new GraphConnection();
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System.out.println(con.getTraversal().E().toList()
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);
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System.out.println(con.getTraversal().V().toList()
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);
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con.closeConnection();
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}
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}
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