Bloom On Client Side: MongoDb

Thursday, May 22, 2014

Triangular Meetup May 2014

I went to the Tri-angular meetup and learned about the mean stack (Mongo-Express-Angular-Node). This was held at Ignite Social Media hosted by Darrough West and Keith Morgan.

There is mean.io and meanjs.org . It was suggested its easy to obtain it and get it built just using the node package manager (npm install). The io one is better choice as it has an SLA, but they are both pretty similar. However, it is rapidly changing and it does not have a released version.

Passportjs is baked in.

They host their projects on Heroku with MongoHQ.

Koa was mentioned as the "next" express.

Angular and node each have their own routing, but Angular routing invokes the Node routing.

Angular boiler plate was mentioned.

Suggestions with angular:
Try not overload scope, Template cache helpful

Html5 polyfill, respond.js for dealing with ie8

Do not put JQuery in controllers

Promises built in

Factories for http calls

Providers are fancy plugins

No need for undersore, but people like the map/reduce functions

lo-dash a underscre alternative

meteor use on sockets

mention of mongoose

Related post.

Sunday, October 20, 2013

Saturday, October 12, 2013

MongoDB Week 1

I started the MongoDB for Java developer course this week.

The lead developer of the java driver Jeff Yemin along with Andrew Erlichson are the instructors.

Non relational algebra

Json store

Json documents - collection of documents

Key values

Mongoshell - tcpconnects to mongodb

Sparq java - routes to urls

Freemarker mvc

https://education.mongodb.com/courses/10gen/M101J/2013_October/courseware/Week_1_-_Introduction/Installing_MongoDB_windows_/

http://www.mongodb.org/downloads

http://www.mongodb.org/dr/downloads.mongodb.org/win32/mongodb-win32-x86_64-2.2.6.zip/download

Copy files in bin dir to c:\mongodb226

Make data dir under c drive, Under data mkdir db

Go to bin dir

c:\mongodb226>mongod

mongod --help for help and startup options

Tue Oct 08 22:44:36 [initandlisten] MongoDB starting : pid=1696 port=27017 dbpath=\data\db

\ 64-bit host=CSGRALLT10

Tue Oct 08 22:44:36 [initandlisten] db version v2.2.6, pdfile version 4.5

c:\mongodb226>mongo

MongoDB shell version: 2.2.6

connecting to: test

Welcome to the MongoDB shell.

For interactive help, type "help".

For more comprehensive documentation, see

http://docs.mongodb.org/

Questions? Try the support group

http://groups.google.com/group/mongodb-user

mongo localhost

> db

test

> show collections

> db.mycollections.insert({text:'hello world'})

> show collections

mycollections

system.indexes

> db.mycollections.find()

{ "_id" : ObjectId("5254c64c2488183e2c3d49f8"), "text" : "hello world" }

c:\>cd data

c:\data>cd db

c:\data\db>dir

Volume in drive C is Windows

Volume Serial Number is 1CEC-CA9A

Directory of c:\data\db

10/08/2013 10:58 PM <DIR> .

10/08/2013 10:58 PM <DIR> ..

10/08/2013 10:58 PM <DIR> journal

10/08/2013 10:50 PM 6 mongod.lock

10/08/2013 10:58 PM 67,108,864 test.0

10/08/2013 10:58 PM 134,217,728 test.1

10/08/2013 10:58 PM 16,777,216 test.ns

10/08/2013 10:58 PM <DIR> _tmp

4 File(s) 218,103,814 bytes

4 Dir(s) 49,962,684,416 bytes free

Maven

Installing_and_Using_Maven

> mvn archetype:generate

enter 308 at prompt

308: remote -> org.apache.maven.archetypes:maven-archetype-quickstart (An archetype which

ven project.)

308

Choose a number or apply filter (format: [groupId:]artifactId, case sensitive contains): 308:

Choose org.apache.maven.archetypes:maven-archetype-quickstart version:

1: 1.0-alpha-1

2: 1.0-alpha-2

3: 1.0-alpha-3

4: 1.0-alpha-4

5: 1.0

6: 1.1

Choose a number: 6: 6

mvn compile exec:java -Dexec.mainClass="org.mongodb.App"

The_MongoDB_Java_Driver

<dependency>
<groupId>org.mongodb</groupId>
<artifactId>mongo-java-driver</artifactId>
<version>2.10.1</version>
</dependency>

import com.mongodb.DB;

import com.mongodb.DBCollection;

import com.mongodb.DBObject;

import com.mongodb.MongoClient;

import com.mongodb.ServerAddress;

public class HelloMongoDB {

public static void main( String[] args ) throws UnknownHostException

{

MongoClient mongoStyleClient = new MongoClient(new ServerAddress("localhost", 27017));

DB db = mongoStyleClient.getDB("test");
System.out.println( "Hello World!" );

DBCollection coll = db.getCollection("mycollections");

DBObject document1 = coll.findOne();

System.out.println(document1); }

}}

Hello World!
{ "_id" : { "$oid" : "5254c64c2488183e2c3d49f8"} , "text" : "hello world"}

Spark Web Application Framework

http://www.sparkjava.com/

<repositories>
<repository>
<id>Spark repository</id>
<url>http://www.sparkjava.com/nexus/content/repositories/spark/</url>
</repository>
</repositories>

<dependency>
<groupId>spark</groupId>
<artifactId>spark</artifactId>
<version>0.9.9.4-SNAPSHOT</version>
</dependency>

import spark.Request;
import spark.Response;
import spark.Route;
import spark.Spark;

public class HelloWorldSparkStyle {

public static void main( String[] args )
{

//http://localhost:4567/
Spark.get(new Route("/") {

@Override
public Object handle(Request arg0, Response arg1) {

return "Hello Spark World!";
}
});

}

}

Hello Spark World!

Template library

http://freemarker.org/

.ftl files combined with data map

      <dependency>
      <groupId>org.freemarker</groupId>
      <artifactId>freemarker</artifactId>
      <version>2.3.19</version>
     </dependency>