Monday, 13 August 2018

Spring bean inheritance | Spring bean configuration for inheritance - Playlist

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What is Spring Bean Inheritance?

If you've been working with the Spring Framework, you might have noticed that sometimes your XML configuration files can get a bit repetitive. This is where Spring Bean Inheritance comes to the rescue! It allows you to share common property values between multiple beans, keeping your configuration clean and efficient.

How Does it Work?

Just like in Java where a class can inherit from another class, in Spring, a bean definition can inherit configuration data from a parent bean. This includes property values, initialization methods, and more.

By using the parent attribute in your XML configuration, you can tell Spring that one bean should "copy" the setup of another.

Why Should You Use It?

DRY Principle: "Don't Repeat Yourself." Avoid typing the same property values for multiple beans.
Centralized Configuration: Change a value in the parent bean, and all child beans are updated automatically.
Cleaner Code: Your XML files become much shorter and easier to read for beginners.

Practical Example

Imagine you have several Employee beans. They all belong to the same department and work in the same city. Instead of defining the department and city for every single employee, you create a Base Bean with these values and let the others inherit from it!

"Think of the parent bean as a template. It sets the foundation, and the child beans just fill in the unique details like names or IDs."