moxious

/**
 * Define a custom procedure to determine true/false if a database is online.
 * That in itself is complicated, so we'll define "online" to mean that across
 * all cluster members, the database has only 1 status (online) and they all
 * agree.  There is no "partially online" in this formulation.
 */
CALL apoc.custom.asProcedure('isDatabaseOnline',
  'CALL apoc.systemdb.execute("SHOW DATABASES")
   YIELD row WITH row.name as name, row.currentStatus as status
   WHERE name = $name

moxious

const neo4j = require('neo4j-driver');
// Always use bolt+routing in your Aura Endpoint.  Customize your details here.
const AURA_ENDPOINT = process.env.NEO4J_URI || 'bolt+routing://aaaaaaa.databases.neo4j.io';
const USERNAME = process.env.NEO4J_USER || 'neo4j';
const PASSWORD = process.env.NEO4J_PASSWORD || 'superSecret';

const writeHobby = (driver, person, hobby) => {
    const query = `
        MERGE (p:Person { name: $person }) 
        MERGE (h:Hobby { name: $hobby })

moxious

const GraphDatabase = require('neo4j-driver')
// always use bolt+routing so that your queries can served by the best instance?
// replace your connection details, username and password
const auth = GraphDatabase.auth.basic('neo4j', 'neo')
const driver = new GraphDatabase.driver('bolt://localhost:7687', auth)
function main() {
    const writeSession = driver.session(GraphDatabase.session.WRITE)
    writeSession.writeTransaction(tx => createRelationshipToPeople(tx, 'Alice', 'David'))
        .then(res => {
            res.records.forEach(row => {

moxious

#!/bin/bash
# Quick script to start an instance for testing.
docker stop neo4j-empty

PASSWORD=admin
CWD=`pwd`
NEO4J=neo4j/neo4j-experimental:4.0.0-rc01-enterprise
DESIRED_USERNAME=neo4j
DESIRED_PASSWORD=admin

moxious

#*****************************************************************
# Neo4j Enterprise configuration
#
# For more details and a complete list of settings, please see
# https://neo4j.com/docs/operations-manual/current/reference/configuration-settings/
#*****************************************************************

# The name of the database to mount
#dbms.active_database=graph.db

moxious

#!/bin/bash
#
# This startup script replaces the normal neo4j startup process for cloud environments.
# The purpose of the script is to gather machine IP and other settings, such as key/value
# pairs from the instance tags, and use that to configure neo4j.conf.
#
# In this way, neo4j does not need to know ahead of time what it's IP will be, and
# can be controlled by tags put on the instance.
######################################################################################
echo "pre-neo4j.sh: Fetching AWS instance metadata"

moxious

/**
 * This query calls 3 key procedures in Neo4j, 
 * gets transaction, connection, and query information and 
 * joins their information, and packs the results
 * into a more compact single record structure.
 * 
 * The result is one record per thing happening on the server,
 * with full visibility into the details of that thing.
 */
CALL dbms.listTransactions()

moxious

-- format for below is: <dataSourceName>.<schemaName>
SET SCHEMA CENSUS.CENSUS;

-- =================================================================

CREATE LABEL LicensedDog
  PROPERTIES (
    licence_number STRING?
  )
  KEY

moxious

/*
 * Load all of Trump's tweets today and do some basic analysis on them.
 */
UNWIND [
  'http://www.trumptwitterarchive.com/data/realdonaldtrump/2017.json',
  'http://trumptwitterarchivedata.s3-website-us-east-1.amazonaws.com/data/realdonaldtrump/2016.json',
  'http://trumptwitterarchivedata.s3-website-us-east-1.amazonaws.com/data/realdonaldtrump/2015.json',
  'http://trumptwitterarchivedata.s3-website-us-east-1.amazonaws.com/data/realdonaldtrump/2014.json',
  'http://trumptwitterarchivedata.s3-website-us-east-1.amazonaws.com/data/realdonaldtrump/2013.json',
  'http://trumptwitterarchivedata.s3-website-us-east-1.amazonaws.com/data/realdonaldtrump/2012.json',

moxious

<style type="text/css" media="screen">
/*
.nodes-image {
	margin:-100;
}
*/	
@import url("//maxcdn.bootstrapcdn.com/font-awesome/4.4.0/css/font-awesome.min.css");

.imageblock .content img, .image img {max-width: 900px;max-height: 300px;}
.deck h3, .deck h4 {display: block !important;margin-bottom:8px;margin-top:5px;}