Updating multiple documents in MongoDB

In this blog post we are going to learn the process of updating multiple documents in MongoDB. MongoDB provides us with update() function to achieve the same. Here are few use cases : db.users.find(); { "_id" : ObjectId("537da62d770359c2fb4668e2"),...

MongoDB : Difference between save and insert

MongoDB uses save and insert option for adding new records in the database. Let me explain the difference between two : Insert : insert is used to add a document in a mongodb collection Save : save is used to add as well as update a document in a mongodb collection....

Generate CSV file using MYSQL command

Hello Guys! This is my first blog post of this month and the topic is “Generate CSV file using MYSQL command” In this post I will discuss about an interesting feature of MYSQL. MySQL provides an easy way for generating csv files by writing the output of a...

Tracking another repository in Git

Recently, I had to create few pull requests to other repositories and in order to do that I had to track the code on some repositories for updating my copy and finally publishing my changes to them. In such situation following steps/commands can help: Add the...

THE ANATOMY OF ARM CORTEX M0/M0+ PROCESSORS

ARM stands for Advanced RISC Machines where RISC stands for Reduced Instruction Sets Computer. The ARM Cortex M0 processor is an eligible choice for Energy Efficient Embedded Products. The features of these processors are Low Power usage, Highly Energy efficient,...

Parse JSON using Command Line.

Hello Guys! This is my second post of this month. In this post I will be explaining on how to parse JSON using command line. A command-line processor can be used to test or debug JSON responses from server. We can easily feed JSON responses from web server into the...

Use Geb in Cucumber functional automated testing

Today we are going to learn how to use Geb in Cucumber functional automated testing? If you are new to Cucumber than please go through my blog. Cucumber Basic concept Fist-of-all if you want use Geb in your application than add these lines in BuildConfig.groovy def...

How to use Scenario Outline and Examples in cucumber?

Today we are going to learn how to use Scenario Outline and Examples in cucumber?. If you are new to cucumber functional automated testing than please go through my blog post Cucumber basic concept First-of-all create a feature file as LoginTest.feature and add these...

How to set text in CKEDITOR using selenium?

If you want to know how to set text in CKEDITOR using selenium than here is the way please go through this. WebDriver driver = new FireFoxDriver() JavascriptExecutor js; if ((driver) instanceof JavascriptExecutor) { js = (JavascriptExecutor)(driver); }...

One-To-One mapping with shared primary keys

Here’s a simple example of how to share primary keys between two persistent entities having one-to-one association. We’ll have a User entity which has one address. Here’s the User POJO: public class User { Long id; Address address; String username;...

Hibernate Second level cache

I am writing a blog on hibernate cache. I have read articles recently and writing here my findings. Hibernate cache is used to reduce interaction with database. We store data in cache and use it whenever application tries to interact with database. Hibernate at first...

Heartbleed explained

Heartbleed bug has been a nightmare for all major public websites this week which are using OpenSSL version 1.0.1 to 1.0.1f (inclusive). Here is a brief explanation about this bug : 1. OpenSSL is a cryptographic library which is used to encrypt communication over...

Grails with Hibernate (Part 1)

Grails with Hibernate (Part 1) Welcome Guys, This is the series of the blog posts on Hibernate with grails. I have divided it into parts. On Part 1 you will see how to map a simple POJO class with the Relational database using hibernate. Step 1) Create a new project...

SQL Joins

Hello Guys! This is my first blog post of this month and in this post I am going to explain about SQL Joins which is considered to be a very integral topic of SQL. The examples shown in this post have been taken from www.tutorialspoint.com. SQL join is a clause which...

Make your view IE8 aware

There might come a requirement where you will want to switch the styling of the html elements according to browser and mainly IE. For example, to make your view IE8 aware you can define a class on the body with IE’s conditional comments like: <!--[if IE...