From 11644b6e8cf9fe3620fdebc858580de505aa0998 Mon Sep 17 00:00:00 2001
From: feger <marc.feger@hhu.de>
Date: Tue, 11 Jun 2019 21:10:25 +0200
Subject: [PATCH] Add graph structure
---
src/app.js | 17 +++++++++++------
src/js/graph/edge.js | 10 ++++++++++
src/js/graph/graph.js | 42 ++++++++++++++++++++++++++++++++++++++++++
src/js/graph/node.js | 8 ++++++++
src/js/neo4j/neo.js | 42 ++++++++++++++++++++++++++++++++++++++++++
src/neo.js | 35 -----------------------------------
6 files changed, 113 insertions(+), 41 deletions(-)
create mode 100644 src/js/graph/edge.js
create mode 100644 src/js/graph/graph.js
create mode 100644 src/js/graph/node.js
create mode 100644 src/js/neo4j/neo.js
delete mode 100644 src/neo.js
diff --git a/src/app.js b/src/app.js
index 2ea43e8..cddfe22 100644
--- a/src/app.js
+++ b/src/app.js
@@ -1,7 +1,12 @@
-import './neo'
+import {Graph} from "./js/graph/graph";
+import {Edge} from "./js/graph/edge";
+import {Node} from "./js/graph/node";
+import {Neo4JAdapter} from "./js/neo4j/neo"
-// TODO: Dockerize and add a Neo4j-Server
-// TODO: Why are there so many results? Improve the loops
-// TODO: Lift the nodes and relations into a good representation
-// TODO: Add a class for the data
-// TODO: Lift the data in a graph and visualize them
\ No newline at end of file
+var graph = new Graph();
+
+var neo = new Neo4JAdapter('neo4j', 'W7uFSy$ywR3M3ck');
+
+graph = neo.getGraph();
+
+console.log(graph);
\ No newline at end of file
diff --git a/src/js/graph/edge.js b/src/js/graph/edge.js
new file mode 100644
index 0000000..c6911f0
--- /dev/null
+++ b/src/js/graph/edge.js
@@ -0,0 +1,10 @@
+export class Edge {
+
+ constructor(id, properties, type, start, end) {
+ this.id = id;
+ this.properties = properties;
+ this.type = type;
+ this.start = start;
+ this.end = end;
+ }
+}
\ No newline at end of file
diff --git a/src/js/graph/graph.js b/src/js/graph/graph.js
new file mode 100644
index 0000000..af8dde9
--- /dev/null
+++ b/src/js/graph/graph.js
@@ -0,0 +1,42 @@
+import {Edge} from './edge'
+
+export class Graph {
+
+ constructor() {
+ this.edges = {};
+ this.nodes = {};
+ }
+
+ addEdge(edge) {
+ if (!(edge.id in this.edges)) {
+ this.edges[edge.id] = edge;
+ console.log("Added: " + JSON.stringify(edge) + " to edges.");
+ }
+ };
+
+ addNode(node) {
+ if (!(node.id in this.nodes)) {
+ this.nodes[node.id] = node;
+ console.log("Added: " + JSON.stringify(node) + " to nodes.");
+ }
+ };
+
+ _asList(dict) {
+ var list = [];
+ for (var key in dict) {
+ if (dict.hasOwnProperty(key)) {
+ list.push(dict[key]);
+ }
+ }
+ return list;
+ }
+
+ get edgesAsList() {
+ return this._asList(this.edges);
+ }
+
+ get nodesAsList() {
+ return this._asList(this.nodes);
+ }
+
+}
\ No newline at end of file
diff --git a/src/js/graph/node.js b/src/js/graph/node.js
new file mode 100644
index 0000000..30f0ed5
--- /dev/null
+++ b/src/js/graph/node.js
@@ -0,0 +1,8 @@
+export class Node {
+
+ constructor(id, properties, labels) {
+ this.id = id;
+ this.properties = properties;
+ this.labels = labels
+ }
+}
\ No newline at end of file
diff --git a/src/js/neo4j/neo.js b/src/js/neo4j/neo.js
new file mode 100644
index 0000000..995c7d9
--- /dev/null
+++ b/src/js/neo4j/neo.js
@@ -0,0 +1,42 @@
+import {v1 as neo4j} from 'neo4j-driver'
+import {Edge} from '../graph/edge'
+import {Node} from '../graph/node'
+import {Graph} from '../graph/graph'
+
+export class Neo4JAdapter {
+ constructor(username, password) {
+ this.username = username;
+ this.password = password;
+ this.authToken = neo4j.auth.basic(this.username, this.password);
+ }
+
+ getGraph(graph) {
+
+ const driver = neo4j.driver('bolt://localhost:7687', this.authToken, {
+ encrypted: false
+ });
+
+ const session = driver.session();
+
+
+ const resultPromise = session.run(
+ 'match (a:User)<-[r]-() return *'
+ );
+
+ var graph = new Graph();
+ resultPromise.then(result => {
+ session.close();
+ result.records.forEach(function (element) {
+ element.forEach(function (subelement) {
+ if (subelement instanceof neo4j.types.Node) {
+ graph.addNode(new Node(subelement.identity.toInt(), subelement.properties, subelement.labels));
+ } else if (subelement instanceof neo4j.types.Relationship) {
+ graph.addEdge(new Edge(subelement.identity.toInt(), subelement.properties, subelement.type, subelement.start.toInt(), subelement.end.toInt()));
+ }
+ });
+ });
+ driver.close();
+ });
+ return graph
+ }
+}
diff --git a/src/neo.js b/src/neo.js
deleted file mode 100644
index 5902d48..0000000
--- a/src/neo.js
+++ /dev/null
@@ -1,35 +0,0 @@
-import {v1 as neo4j} from 'neo4j-driver'
-
-const authToken = neo4j.auth.basic('neo4j', 'W7uFSy$ywR3M3ck');
-console.log(authToken);
-
-const driver = neo4j.driver('bolt://localhost:7687', authToken, {
- encrypted: false
-});
-const session = driver.session();
-
-const personName = 'Marc';
-const resultPromise = session.run(
- 'match (a:Person)-[r:IS_FRIEND]->(b:Person) RETURN a,b,r',
- {name: personName}
-);
-
-resultPromise.then(result => {
- session.close();
- result.records.forEach(function (element) {
- element.forEach(function (subelement) {
- console.log("++++++ " + subelement.constructor.name + " ++++++");
- if (subelement instanceof neo4j.types.Node) {
- console.log("Properties: " + JSON.stringify(subelement.properties));
- console.log("ID: " + subelement.identity.toInt());
- console.log("Labels: " + subelement.labels);
- } else if (subelement instanceof neo4j.types.Relationship) {
- console.log("Type: " + subelement.type);
- console.log("Properties: " + JSON.stringify(subelement.properties));
- console.log("Start: " + subelement.start.toInt());
- console.log("End: " + subelement.end.toInt());
- }
- });
- });
- driver.close();
-});
--
GitLab