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This is a case studyI have attached an instruction document please read through that instruction document.. basically there are two questions to solve.There is an essay template which I have attached please proceed with the documentation according to the templateMITS4002 Research Study 	 	MITS4002 OBJECT-ORIENTED SOFTWARE DEVELOPMENT Research Report  Weightage: 10% Due date: Friday Lesson 08 5 PM 	Late penalty applies on late submission, 10% per day would be deducted 0 mark for LATE Submission more than one week 0 mark for DUPLICATED Submission or Shared Work 	You will be marked based on your submitted zipped file on Moodle. You are most welcome to check your file with your lab tutor before your submission. No excuse will be accepted due to file corruption, absence from lecture or lab classes where details of lab requirements may be given. Please make sure that you attend Lecture EVERY WEEK as low attendance may result in academic penalty or failure of this unit. 	 	 	 Table of Contents 1.	Rubrics for MITS4002 Research Report	3 2.	Question 1	4 3.	Question 2	4 4.	What to submit:	5 5.	Research References:	5 6.	APPENDIX A (Sample of flow charts)	6 6.1	Use Case Model Global View (Partial)	6 6.2	Checkout Use Case	6 6.2.1	Brief Description	6 6.2.2	Flow of Events	6 6.2.3	Class Diagram	7 6.2.4	Sequence Diagram	8 6.3	Compute Price Use Case	8 6.4	Flow of Events	8 6.5	Class Diagram	9 6.6	Sequence Diagram (Compute Price – subtotal of items)	9 6.7	Sequence Diagram (Compute Price – total price)	10 This assessment item relates to the unit learning outcomes as in the unit descriptors.  This checks your understanding about object-oriented software development.  This assessment covers the following LOs.  LO4 Create object hierarchies using additional utility methods, application programming interfaces (API) and interfaces, in conjunction with existing classes and objects. LO6 Extend the on object-oriented concepts and design patterns introduced in lectures to carry out further research on a chosen object-oriented design pattern or emerging recent programming languages. Rubrics for MITS4002 Research Report 	Task 	Marks 	Describe how software development productivity can be accomplished by the application of various Creational Design Patterns. 	2 	Presentation of classe relationships (use appropriate symbols, dotted arrow, diamond shape …etc.) 	2 	Use UML diagram to design ComputePrice class. Then write the complete Java class. 	2 	Use UML diagram to design Checkout class. Then write the complete Java class. 	2 	Structure/organisation of the report. 	2 Total:     / 10 marks Question 1 Research on the various design patterns described in Smith (2015) and Gamma et al (1999). Describe how software development productivity can be accomplished by the application of various Creational Design Patterns.  	Describe each of them Question 2 Refer to the Software Solution Scenario described in Appendix A and also OO Software Design Patterns described in Gamma et al (1995) / Smith (2015 to answer the questions below: You have been tasked to carry out the development of an online shopping system for iChipKart store. You are currently working on two use cases of the system: Checkout and Compute Price. An extract of the current analysis and design of these use cases are given in Appendix A. Consider the two software design problems described below. 	Design Problem 1 (Compute Price): During the transition from Analysis to Design phase, you are designing the price computation for ease of incorporating different shipping and handling fees for different locations in the pricing policies. In your design, you also want to ensure that various policies in pricing computation are encapsulated appropriately for ease of maintenance. Suggested candidate design patterns (Proxy, Strategy, Template Method) Use UML diagram to design ComputePrice class. Then write the complete Java class 	Design Problem 2 (Checkout): During the transition from Analysis to Design phase, you are designing the functionality of free gifts for ease of offering and withdrawing the various gifts dynamically and for ease of modifying the price ranges of free gifts. Suggested candidate design patterns (Chain of Responsibility, Composite, Iterator) Use UML diagram to design Checkout class. Then write the complete Java class NOTE: Don’t forget to include relationships (use appropriate symbols, dotted arrow, diamond shape …etc) For each of these design problems, answer the following: a. Choose one of the suggested candidate design patterns that you think best solves the problem. Justify the applicability of your choice. You need to research on various patterns and come up with your choices and justifications. 	 b. Applying scientific principles identify the participants for incorporating the chosen design pattern and modify the class diagram of the use case to show their relationships. 	 c. Critically analyze the patterns and list two benefits of incorporating the design pattern, with respect to the problem.  d. Concerns such as design of security properties and domain specific security is addressed while transiting from requirements engineering to design. Choose any two security design patterns of your choice and research their merits and demerits. Appraise you selected security patterns against the following pattern characteristics: i. Level of Abstraction: Ease with which the pattern can be used in different contexts without redefinition. ii. Completeness: The security speciation that is correct and complete.  iii. Reusability: The pattern should be easily applied and used in different contexts. iv. Pattern Composability: The pattern should be easily used with other patterns. v. Security Composability: The pattern can be used with other patterns without losing any of the security it provides, nor affecting the security provided by the other patterns. vi. Valid-ability: The patterns’ security properties, as well as their implementation and usage, can be easily validated. This validation would preferably be automated.   What to submit: Questions 1 and 2 in a written essay format. You must use the project template given on Moodle to present your answers. Research References: 1) Erich Gamma, Richard Helm, Ralph Johnson, John Vlissides, Design Patterns : Elements of Reusable Object-Oriented Software, Addison Wesley, 1995. 2) Smith, Ben. Object-Oriented Programming. Advanced ActionScript 3. Apress, pp63-69, 2015 . APPENDIX A (Sample of flow charts) Analysis and Design for Object Oriented Software  Online Shopping System for iChipKart Use Case Model Global View (Partial)  Checkout Use Case Brief Description After a buyer adds items to the shopping cart, he/she will check out the purchased items. Items can be Books, Media (CD, hard disks, memory card etc.), TV, computing items and accessories like tablets, thumb drives etc. In order to make their business competitive, iChipKart has decided to give its buyers one of the following memorabilia items as a free gift during the period 1 October to 15 January. The following describes the policy for these gifts:  (1) If the buyer purchases goods worth ≥$25 and

Neha · Accepted Answer

Victorian Institute of Technology
Master of Information Technology & Systems 
MITS4002
OBJECT-ORIENTED SOFTWARE DEVELOPMENT
(Research Study)
Submitted to : 								Submitted by : 
								
Research Study
#Question 1
Contents
The Creational Design Patterns	3
The Object Pool Design Method	3
The Singleton Design Method	4
The Factory Design Method	5
When do we need Factory Design Pattern?	5
The Prototype Design Method	5
The Builder Design Method:	6
Real Time Example of Builder Design Pattern:	6
References:	7
THE Compute Price:	9
Suggested design pattern: Template Method	9
THE ADVANTAGES OF TEMPLATE DESIGN PATTERN	10
Security Design Patterns:	10
Checkout	11
Suggested design pattern: Chain of Responsibility	11
THE ADVANTAGES OF CHAIN OF RESPONSIBILITY DESIGN PATTERN	11
Security Design Patterns:	12
Research
The Creational Design Patterns
The creational design patterns are related with the way objects are created in the food stop these patterns are used in the code when the decision will be taken at the time of instantiation of a class. The object is created using the new keyword in Java. 
For example: StudentData  d1 = new StudentDate();
Using the hard coded code in the programming language is not a good approach to stop we can create the instance by using new keyword stop there are chances when the nature of the option can be changed according to the program. In such cases, the creational design patterns helps to provide more flexible and general approach. 
The Object Pool Design Method
The basic idea of this pattern is “to reuse the object which are expensive to create”.
An object pool can be used as a container which contains a specific amount of the objects of Java. Whenever we access an object from the pools it will not be available until we put it back after the usage. The life cycle of the objects present in the food is creation, validation an object pool helps the developer to manage available resources in a more efficient way. Application servers where the data source pools, thread pools etc are present is the example of object pool design method.
Advantages:
· Helps to boost the performance of the application.
· Most efficient and effective where the rate of industrialization of a new class instance 
· Manages the connection also provides better way to reduce them.
· Can share the limit of maximum number of objects which can be created.  
The Singleton Design Method
The single turn patterns for low the statement that “define a class which has only one instance and provides global point of access to it”. A class needs to ensure that only single instance should be created and the single object must be used by all the classes. Easy instantiation and lazy instantiation are 2 types of the Singleton design pattern. Creating instance at the low time is known as easy instantiation and creating instance whenever required is known as the lazy instantiation. 
Advantages: 
· It helps to save them movie as the object is not created for every request for stop only a single instance is created and it is used again and again. 
Usages:
· The Singleton pattern method is used in the database applications and multithreaded applications poster it can be used in the login, thread pools, configuration settings, caching etc.

MITS4002 Research Study MITS4002 OBJECT-ORIENTED SOFTWARE DEVELOPMENT Research Report Weightage: 10% Due date: Friday Lesson 08 5 PM Late penalty applies on late submission, 10% per day would be...

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