#35 add graphql node.

graphql-journey/nodejs/apps/app1/node-graphql/business_person_server.js

@@ -0,0 +1,70 @@
+const express = require('express');
+const express_gql = require('express-graphql').graphqlHTTP;
+const { buildSchema } = require('graphql');
+
+const appServer = express();
+
+var schema = buildSchema(`
+    type Query {
+    person(name: String!): BusinessPerson
+    department(dept: String!): [BusinessPerson]
+    },
+    type BusinessPerson {
+    name: String,
+    age: Int,
+    country: String,
+    dept: String
+    }
+    `);
+
+    var businessPersonData = [
+        {
+            name: 'David Schott',
+            age: 14,
+            country: "United States",
+            dept: "dept1"
+        },
+        {
+            name: 'Satoshi Yoshida',
+            age: 15,
+            country: "Japan",
+            dept: "dept1"
+        },
+        {
+            name: 'Jackson Lee',
+            age: 16,
+            country: "England",
+            dept: "dept2"
+        }
+    ]
+
+    var getPerson = function(args) {
+        var name = args.name;
+        return businessPersonData.filter(person => {
+            return person.name == name;
+        })[0];
+    }
+
+    var getDepartment = function(args) {
+        if (args.dept) {
+            var dept = args.dept;
+            return businessPersonData.filter(person => {
+                return person.dept == dept;
+            });
+        } else {
+            return businessPersonData;
+        }
+    }
+
+    var root = {
+      person: getPerson,
+      department : getDepartment   
+    };
+
+    appServer.use('/graphql', express_gql({
+        schema: schema,
+        rootValue: root,
+        graphiql: true
+    }));
+
+    appServer.listen(4000, () => console.log('GqlServer is running...'));