Itinerary Website (Web Development Document)
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This document outlines the development concept and design pattern for a travel itinerary web application, detailing the project's structure, including a three-tier architecture and the application of object-oriented principles. It emphasizes the use of MVC design, abstraction, inheritance, and polymorphism to create a flexible and maintainable codebase. Additionally, the document describes the CRUD operations and methods for managing user and itinerary data while encapsulating the database interactions.
Itinerary Website (Web Development Document)
- 1. DEVELOPMENT CONCEPT AND DESIGN PATTERN FOR TRAVEL ITINERARY PROJECT Created by Team Members Reviewed by Team Members Module: Web Application Design and Modeling (WDAM) Created Date 10 Jan 2012 Assignment: Final Assignment (Itinerary 2012 project) Revised Date 12 Jan 2012 Revision No. 1.0 Team Name: As a Whole Document Name D01-002 1
- 2. 2 OBJECTIVE OF THIS DOCUMENT 1. To propose our design pattern based on well-known framework and architecture. 2. To prevent if our application cannot run in different environment properly. 3. To explain how we used object- oriented and development concept applied for this project.
- 3. We separated code into three tiers OUR DEVELOPMENT CONCEPT FOLLOWING OO & DESIGN PATTERN Presentation Layer Web Browser Web Application (JSP) JSP JSP JSP JSP JSP JSP JSP page#1 page#2 page#3 page#4 page#4 page#6 page#n Business Logic Layer Services Itineary.Model, utils, mail Itinerary Itin_Item Privacy Note FriendGroup Services User Itinerary. Itineary.U Transport Activity Trip mail til Manager Admin Flight Itinerary.Model Data Model Layer Itinerary.Controller Applied abstraction, inheritance and and ORM (Mapper) Abstract polymorphism concept. Therefore, Controller code can be reused in each layer. Trip Friend Itinerary Flight Transport Activity Note Privacy User Manager Group Controller Controller Controller Controller Controller Controller Controller Controller Controller JDBC Database (Microsoft Access) Applied from Kuali Application Architecturehttps://wiki.kuali.org/display/KULRICE/Architecture+(Archive+from+Original+KTC+Work), Last accessed 7 Jan 2012
- 4. A P P LIED MV C (MO DEL V IEW C O N T R O LLER) 4 O N IT IN ER A RY P R O J EC T. MS Access database Update Update Data presentation Abstract Controller Class Data Model Layer Entity Specific Controller Class Get Data Calss1 .. Class n The Controller Concept Main functions of our Controller Class 1. Support CRUD Operation between DBMS(persistent layer) and Benefits for this concept. Data model layer. ( C=Create, R=retrieval, U=Update, D= Delete ) 1. Encapsulate DBMS and SQL Language 2. Map database and tables into Objects. So, a user programmer doesn’t need to learn about database backend behind 2. Flexible to change DBMS application. Also, SQL syntax is encapsulated from the application layer. Applied from http://www.asp.net/mvc/tutorials/overview/asp-net-mvc-overview, last accessed 11 Jan 2012
- 5. EX . SO U R C E C O DE A N D IMP L EMEN TAT IO N 5 C O N C EP T IN C O N T R O LLER PA G K A GE Ex. Abstract Methods in our AbstractController Class Ex. Superclass Methods in our AbstractController Class // 1) Find And return Single Object by Primary key Value public Object FindObject(String PKValue) // 2) Retrieve Object by specific Field Name and Value // Tell controller what is the table's Primary Key Field Name public Object FindObjectByField(String FieldName,String FieldValue) public abstract String getPKFieldName(); // 3) Save Your Object to databases // Tell controller What is the table Name to Store Object public void SaveObject(Object obj) public abstract String getTableName(); // 4) Retrieve all objects in table //Tell controller How to Load data from Database to object public ArrayList<Object> getObjectList() protected abstract Object CreateFromResultSet() // 5) Retrieve objects with conditions public ArrayList<Object> QueryObjects(String Condition) // Tell controller How to Store object to databases protected abstract void SaveToResultSet(Object obj) // 6) retrieve Objects with specific query public ArrayList<Object> CustomQueryObjects(String SelQuery) Abstraction, Inheritance and Polymorphism concepts are // 7) delete Object by Primarykey Value also applied in this AbstractController. public boolean DeleteByPKValue(String PKValue) throws SQLException Regarding with our abstract class, programmer can Benefits: implement a subclass as following; 1. Separate characteristic of each subclass which has same 1) Create Class and Inherit from Abstract Controller Class. concept of the abstract class. 2) Override the Abstract Methods to Implement the Controller 2. Code is the same pattern. It is easy to maintain and delegate class. work.
- 6. EX . C O MP L ET ED DESIG N IN MO DEL PA C K A GE 6 (R EDU C E R EC O MP L IN G C O DE) Ex Method in Itinerary.Model Ex Method in Itinerary.User //1) Create Itinerary //1) Create User Profile CreateItinerary():boolean CreateProfile():boolean //2) Update Itineary //2) Update User Profile UpdateItinerary():boolean UpdateProfile():boolean //3) Delete Itinerary //3) Delete User RemoveItinerary():boolean RemoveUser():boolean //================================== //4) Search Itinerary by Condition //ex. ItinNo = ‘T01’ and UserName = ‘john’ //================================== //Function will return array list following condition //4) Search User by Condition //================================== //ex. UserName = ‘abc’ and FirstName = ‘john’ SearchItinerary(String condition):ArrayList<Itinerary> //Function will return Array list following condition //================================== //5) Search by ItinNo SearchUser(String condition):ArrayList<User> //Return Object of Itinerary SearchByPk():Itinerary //5) Search by UserName //Return Object of user JSP is flexible to operate data objects //Search Shared Itineraries (Needs to check privacy) SearchByPk():User and reduce needs to add more SearchSharedViewItinerary(String UserName):ArrayList<Itinerary> methods in model classes. As can be seen, model classes have five main methods. 1. Presentation layer (JSP) can operate inserting, updating, Benefits: deleting and retrieving data objects following these main methods. 1. Flexible to operate creating, updating, deleting and retrieving data 2. We add some methods in model classes for specific needs ex. without recompiling java. SearchSharedViewItinerary because this function needs to search with privacy. It cannot use general search method. 2. Database is also encapsulated in this layer.