Book Image

Hands-On Design Patterns with Java

By : Dr. Edward Lavieri
2 (1)
Book Image

Hands-On Design Patterns with Java

2 (1)
By: Dr. Edward Lavieri

Overview of this book

Java design patterns are reusable and proven solutions to software design problems. This book covers over 60 battle-tested design patterns used by developers to create functional, reusable, and flexible software. Hands-On Design Patterns with Java starts with an introduction to the Unified Modeling Language (UML), and delves into class and object diagrams with the help of detailed examples. You'll study concepts and approaches to object-oriented programming (OOP) and OOP design patterns to build robust applications. As you advance, you'll explore the categories of GOF design patterns, such as behavioral, creational, and structural, that help you improve code readability and enable large-scale reuse of software. You’ll also discover how to work effectively with microservices and serverless architectures by using cloud design patterns, each of which is thoroughly explained and accompanied by real-world programming solutions. By the end of the book, you’ll be able to speed up your software development process using the right design patterns, and you’ll be comfortable working on scalable and maintainable projects of any size.
Table of Contents (15 chapters)
Free Chapter
Section 1: Introducing Design Patterns
Section 2: Original Design Patterns
Section 3: New Design Patterns

Understanding the pipe-filter pattern

The pipe-filter, or pipe and filter, architectural pattern is a robust architecture that can contain any number of filters. The pattern starts by taking data from multiple sources and then passes them through sequential filters to transform the data from one format to another. The filters are connected via pipes. The next diagram shows an overview of the pipe-filter pattern with three sequential filters:

Pipe-filter patternoverview

We can take a deeper look at this pattern with a UML sequence diagram. This diagram illustrates the data flow and the utility of the pipes connecting the filters:

Pipe-filter patternUML sequence diagram

In the next sections, we will explore the following example implementations of the pipe-filter architectural pattern:

  • Simple transformation
  • Complex transformation