Strategy Design Pattern

•

1 like•1,410 views

Design patterns: Strategy Pattern The strategy pattern is a software design pattern that enables an algorithm's behavior to be selected at run time.

Software

http://jy
aasa.comCopyright 2016. Jyaasa Technologies.
Strategy Pattern

Copyright 2016. Jyaasa Technologies.
http://jy
aasa.com
What is Strategy Pattern?

Copyright 2016. Jyaasa Technologies.
http://jy
aasa.com

Copyright 2016. Jyaasa Technologies.
http://jy
aasa.com
Ktm Butwal
Taxi Plan Taxi
Ktm.
Airport
Bhairahawa
Airport
Ktm Butwal
Taxi Bus
Kalanki
Ktm Butwal
Taxi Bus BusKalanki
Chitwan
Strategy 1
Strategy 2
Strategy 3

Copyright 2016. Jyaasa Technologies.
http://jy
aasa.com
Wikipedia Definition
the strategy pattern (also known as the policy pattern) is
a software design pattern that enables an algorithm's
behavior to be selected at runtime. The strategy pattern
● defines a family of algorithms,
● encapsulates each algorithm, and
● makes the algorithms interchangeable within that
family.

Copyright 2016. Jyaasa Technologies.
http://jy
aasa.com
When to Use?
Shopping Mall Example
- Accept customer detail
- Calculate bill amount
- Apply discount based on the day of week
- Monday - High discount (10%)
- Friday - Low discount (5%)

Copyright 2016. Jyaasa Technologies.
http://jy
aasa.com
Where does the discount logic reside?
Inside ShoppingMall class
Or
Outside ShoppingMall class

Copyright 2016. Jyaasa Technologies.
http://jy
aasa.com
Open closed principle
- software entities (classes, modules, functions, etc.) should be open
for extension, but closed for modification
- New discount logic may be applied in future
- Not reusable - Same discount strategy can be use in other shopping
mall

Copyright 2016. Jyaasa Technologies.
http://jy
aasa.com
Separate discount logic from ShoppingMall class

Copyright 2016. Jyaasa Technologies.
http://jy
aasa.com
Context Strategy

Copyright 2016. Jyaasa Technologies.
http://jy
aasa.com
=> grill = Grill.new(HotDog.new)
=> grill.grilling # => "Grilling the hot dogs!"
=> grill.food = Hamburger.new
=> grill.grilling # => "Grilling the hamburgers!"
=> grill.food = VeggiePatty.new
=> grill.grilling # => "Grilling the veggie patties!"

Copyright 2016. Jyaasa Technologies.
http://jy
aasa.com
References
- https://dockyard.com/blog/2013/07/25/design-patterns-strategy-pattern
- https://en.wikipedia.org/wiki/Strategy_pattern
- https://sourcemaking.com/design_patterns/strategy

Thank you!
Lets Discuss
github.com/glunwar
@gkunwar1
Copyright 2015. Jyaasa Technologies.Copyright 2016. Jyaasa Technologies.
http://jyaasa.com

What's hot

The State Design PatternJosh Candish

PATTERNS04 - Structural Design PatternsMichael Heron

Presentation facade design patternBayu Firmawan Paoh

Gof design patternnaveen kumar

Behavioral Design PatternsLidan Hifi

Visitor PatternIder Zheng

Factory Design PatternJyaasa Technologies

Observer Software Design Pattern Nirthika Rajendran

Abstraction in javasawarkar17

SOLID Design PrinciplesAndreas Enbohm

Final keyword in javaHitesh Kumar

Wrapper classesRavi_Kant_Sahu

Facade patternShakil Ahmed

Java Course 11: Design PatternsAnton Keks

Overview of UML DiagramsManish Kumar

Advance Java Programs skeletonIram Ramrajkar

03 algorithm propertiesLincoln School

Creational patternHimanshu

Design Pattern - Factory Method PatternMudasir Qazi

Object Oriented Analysis & DesignMeghaj Mallick

What's hot (20)

The State Design Pattern

PATTERNS04 - Structural Design Patterns

Presentation facade design pattern

Gof design pattern

Behavioral Design Patterns

Visitor Pattern

Factory Design Pattern

Observer Software Design Pattern

Abstraction in java

SOLID Design Principles

Final keyword in java

Wrapper classes

Facade pattern

Java Course 11: Design Patterns

Overview of UML Diagrams

Advance Java Programs skeleton

03 algorithm properties

Creational pattern

Design Pattern - Factory Method Pattern

Object Oriented Analysis & Design

Similar to Strategy Design Pattern

Welcome your new digital team member. meet your AI infused agile agentRaghavendra Meharwade

Introduction to GCP (Google Cloud Platform)Pulkit Gupta

Advances in SAFe DevOpsArun Chinnaraju MBA, PMP, CSM, CSPO, SA

Webinar: Select the Right Web CMS in 2016Real Story Group

Smart Agile Tools 2020: AI taking it to the future stateRaghavendra Meharwade

Machine Learning: Decision TreesNMIMS Global Access School of Continuing Education (NGA-SCE)

Industrial TransformationAmazon Web Services

Analytics Store for Hybrid CloudMadan Ganesh Velayudham

Machine learning & computer visionNetlight Consulting

Machine Learning in Computer VisionSaksham Gautam

Meet Preston, and Explore Your Digital Twin in Virtual Reality (GPSTEC321) - ...Amazon Web Services

Cwin16 tls-partner-sas new-open_analytics_platformCapgemini

What, Why and How of Governance in RPAMohit Sharma (GAICD)

The Future of AI on AWSBoaz Ziniman

Just add ImaginationKNIMESlides

MLops workshop AWSGili Nachum

IRJET- Supply Chain Network Design for Plant Location and Selection of Capaci...IRJET Journal

Microservices: The Building Blocks for a Digital FutureSAP Customer Experience

Trends and Best Practices for Implementing SaaS for Your BusinessCallidus Software

Grassroots Kanban – An Evolutionary Approach To ChangeSynerzip

Similar to Strategy Design Pattern (20)

Welcome your new digital team member. meet your AI infused agile agent

Introduction to GCP (Google Cloud Platform)

Advances in SAFe DevOps

Webinar: Select the Right Web CMS in 2016

Smart Agile Tools 2020: AI taking it to the future state

Machine Learning: Decision Trees

Industrial Transformation

Analytics Store for Hybrid Cloud

Machine learning & computer vision

Machine Learning in Computer Vision

Meet Preston, and Explore Your Digital Twin in Virtual Reality (GPSTEC321) - ...

Cwin16 tls-partner-sas new-open_analytics_platform

What, Why and How of Governance in RPA

The Future of AI on AWS

Just add Imagination

MLops workshop AWS

IRJET- Supply Chain Network Design for Plant Location and Selection of Capaci...

Microservices: The Building Blocks for a Digital Future

Trends and Best Practices for Implementing SaaS for Your Business

Grassroots Kanban – An Evolutionary Approach To Change

Recently uploaded

Odoo 14 - eLearning Module In Odoo 14 Enterprisepreethippts

Taming Distributed Systems: Key Insights from Wix's Large-Scale Experience - ...Natan Silnitsky

Implementing Zero Trust strategy with AzureDinusha Kumarasiri

Ahmed Motair CV April 2024 (Senior SW Developer)Ahmed Mater

How to submit a standout Adobe Champion ApplicationBradBedford3

MYjobs Presentation Django-based projectAnoyGreter

Tech Tuesday - Mastering Time Management Unlock the Power of OnePlan's Timesh...OnePlan Solutions

BATTLEFIELD ORM: TIPS, TACTICS AND STRATEGIES FOR CONQUERING YOUR DATABASEOrtus Solutions, Corp

A healthy diet for your Java application Devoxx France.pdfMarharyta Nedzelska

Best Web Development Agency- Idiosys USA.pdfIdiosysTechnologies1

Cloud Data Center Network Construction - IEEEVICTOR MAESTRE RAMIREZ

Software Project Health Check: Best Practices and Techniques for Your Product...Velvetech LLC

Balasore Best It Company|| Top 10 IT Company || Balasore Software company Odishasmiwainfosol

Cyber security and its impact on E commercemanigoyal112

CRM Contender Series: HubSpot vs. SalesforceBrainSell Technologies

办理学位证(UQ文凭证书)昆士兰大学毕业证成绩单原版一模一样umasea

SpotFlow: Tracking Method Calls and States at Runtimeandrehoraa

React Server Component in Next.js by Hanief UtamaHanief Utama

Unveiling the Future: Sylius 2.0 New FeaturesŁukasz Chruściel

What are the key points to focus on before starting to learn ETL Development....kzayra69

Recently uploaded (20)

Odoo 14 - eLearning Module In Odoo 14 Enterprise

Taming Distributed Systems: Key Insights from Wix's Large-Scale Experience - ...

Implementing Zero Trust strategy with Azure

Ahmed Motair CV April 2024 (Senior SW Developer)

How to submit a standout Adobe Champion Application

MYjobs Presentation Django-based project

Tech Tuesday - Mastering Time Management Unlock the Power of OnePlan's Timesh...

BATTLEFIELD ORM: TIPS, TACTICS AND STRATEGIES FOR CONQUERING YOUR DATABASE

A healthy diet for your Java application Devoxx France.pdf

Best Web Development Agency- Idiosys USA.pdf

Cloud Data Center Network Construction - IEEE

Software Project Health Check: Best Practices and Techniques for Your Product...

Balasore Best It Company|| Top 10 IT Company || Balasore Software company Odisha

Cyber security and its impact on E commerce

CRM Contender Series: HubSpot vs. Salesforce

办理学位证(UQ文凭证书)昆士兰大学毕业证成绩单原版一模一样

SpotFlow: Tracking Method Calls and States at Runtime

React Server Component in Next.js by Hanief Utama

Unveiling the Future: Sylius 2.0 New Features

What are the key points to focus on before starting to learn ETL Development....

Strategy Design Pattern

5. Copyright 2016. Jyaasa Technologies. http://jy aasa.com Ktm Butwal Taxi Plan Taxi Ktm. Airport Bhairahawa Airport Ktm Butwal Taxi Bus Kalanki Ktm Butwal Taxi Bus BusKalanki Chitwan Strategy 1 Strategy 2 Strategy 3

6. Copyright 2016. Jyaasa Technologies. http://jy aasa.com Wikipedia Definition the strategy pattern (also known as the policy pattern) is a software design pattern that enables an algorithm's behavior to be selected at runtime. The strategy pattern ● defines a family of algorithms, ● encapsulates each algorithm, and ● makes the algorithms interchangeable within that family.

7. Copyright 2016. Jyaasa Technologies. http://jy aasa.com When to Use? Shopping Mall Example - Accept customer detail - Calculate bill amount - Apply discount based on the day of week - Monday - High discount (10%) - Friday - Low discount (5%)

10. Copyright 2016. Jyaasa Technologies. http://jy aasa.com Open closed principle - software entities (classes, modules, functions, etc.) should be open for extension, but closed for modification - New discount logic may be applied in future - Not reusable - Same discount strategy can be use in other shopping mall

14. Copyright 2016. Jyaasa Technologies. http://jy aasa.com => grill = Grill.new(HotDog.new) => grill.grilling # => "Grilling the hot dogs!" => grill.food = Hamburger.new => grill.grilling # => "Grilling the hamburgers!" => grill.food = VeggiePatty.new => grill.grilling # => "Grilling the veggie patties!"

15. Copyright 2016. Jyaasa Technologies. http://jy aasa.com References - https://dockyard.com/blog/2013/07/25/design-patterns-strategy-pattern - https://en.wikipedia.org/wiki/Strategy_pattern - https://sourcemaking.com/design_patterns/strategy

Strategy Design Pattern

Recommended

Recommended

More Related Content

What's hot

What's hot (20)

Similar to Strategy Design Pattern

Similar to Strategy Design Pattern (20)

More from Jyaasa Technologies

More from Jyaasa Technologies (20)

Recently uploaded

Recently uploaded (20)

Strategy Design Pattern