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Wednesday, 6 September 2017

Spring Dependency Injection with examples


Introduction :
  • Dependency Injection (DI) is a design pattern that removes the dependency from the programming code so that it can be easy to manage and test the application. Dependency Injection makes our programming code loosely coupled.
  • Dependency Injection was originally called Inversion of Control (IoC) because the normal control sequence would be the object finds the objects it depends on by itself and then calls them. Here, this is reversed: The dependencies are handed to the object when it's created. This also illustrates the Hollywood Principle at work: Don't call around for your dependencies, we'll give them to you when we need you.
  • To understand the Dependency Injection better, Let's understand the Dependency Lookup (DL) first:

Kayako Installation (Kayako-fusion-stable)

You Need to download your Kayako fusion setup directory from support.kayako.com from your Kayako account.

Pre-Setup Configuration :

Rename config File :
  • Rename file at upload/__swift/config/config.php.new To config.php.
Update config.php :

We need to update as above defined config.php file with its variables.
Open config.php file and update values as per your configuration in system.
  • define('DB_HOSTNAME', 'your_localhost_');
  • define('DB_USERNAME', 'db_username_');
  • define('DB_PASSWORD', 'db_password_');
  • define('DB_NAME', 'db_name_');
Only above maintained variables need to be changed.