62 lines
1.6 KiB
Java
62 lines
1.6 KiB
Java
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/*
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* To change this license header, choose License Headers in Project Properties.
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* To change this template file, choose Tools | Templates
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* and open the template in the editor.
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*/
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package com.camillepradel.movierecommender.controller;
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import java.net.ConnectException;
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import org.neo4j.driver.v1.*;
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import org.neo4j.driver.v1.exceptions.Neo4jException;
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/**
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*
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* @author renando
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*/
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public class Neo4jConnector {
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private static Neo4jConnector INSTANCE = null;
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private static Session session = null;
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private static Driver driver = null;
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private Neo4jConnector() {
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}
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public static synchronized Neo4jConnector getInstance()
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{
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if (INSTANCE == null)
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{
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INSTANCE = new Neo4jConnector();
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driver = GraphDatabase.driver( "bolt://localhost", AuthTokens.basic( "neo4j", "root1234" ) );
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session = driver.session();
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}
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return INSTANCE;
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}
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public Session getConnection() throws ConnectException {
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if (session == null || driver == null){
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Neo4jConnector.getInstance();
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}
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return this.session;
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}
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public boolean close() throws ConnectException {
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boolean etat = false;
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if (session != null) {
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try {
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session.close();
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driver.close();
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etat = true;
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} catch (Neo4jException e) {
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etat = false;
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}
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} else {
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throw new ConnectException();
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}
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return etat;
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}
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}
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