Application Architecture
In this section we will explain you the architecture of the application and
the different components that makes up the layers.
Our Login and Registration application consists of 3 different layers (tiers)
- Presentation Layer
- Business Layer
- Data Access Layer
In this application the presentation layer, business
layer and data access layer are physically located on the same JEE server. The
different layers of the application are isolated from each other and connected
through well defined interfaces.
Three tier architecture of the application:
Presentation Layer
JSF is used to build the presentation layer of the
application. JFS allows us to create rich gui for web application. It resolves
the technical challenges of creating rich gui web application. In this layer we
have jsp pages and JSF components. All the request to the web server are passes
through faces servlet.
Business Layer
The POJO classes and classes to process the business
logic are used to create the Business Layer. The POJO classes with the help of
spring framework creates an ideal solution to implement the Business Layer.
Data Access Layer
The data access layer handles all the logic to
save and retrieve the data from data base. Hibernate O/R mapping tools is an
ideal solution for enterprise application of any size. Hibernate handles all the
logic to store and retrieve POJO objects. It also handles resource management
and transaction management activities.
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