Object-Oriented Software Development with UML - UNU-IIST ...

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92 Collaboration Diagrams:ClassAmsg1()1:message1()2:message2()3:message3():ClassBFigure 7.4: Messages7.2.2 More notational issuesRepresenting a return value Some message sent to an object requires a value to be returned to thesending object. A return value may be shown by preceding the message with a return value variable nameand an assignment operator (‘:=’). The type of the return value may operationally be shown. This isillustrated in Figure 7.5. The standard syntax for messages is:msg():POST1:tot:=total():Integer:SalegetClassList():Module1:name:=getName():String:StudentFigure 7.5: Return valuesreturn := message(parameter : parameterType) : returnTypeRepresenting iteration An object may repeatedly send a message to another object a number of times.This is indicated by prefixing the message with a start (‘*’). This is shown in Figure 7.6.For any other kind of iterations we may combine the asterisk with an iteration clause in square brackets,such as* — the message will be sent repeatedly, until becomes less than ,|ƒ =*[item not found] — the message will be sent repeatedly, until the is found.OLCXNY¡ w¡‰¹º|ƒB} =To express more than one message happening within the same iteration clause (for example, a set of messageswithin a for loop), repeat the iteration clause on each message. This is illustrated in Figure 7.7.Report No. 259, July 2002UNU/IIST, P.O. Box 3058, Macau
Collaboration Diagrams 93msg1():POST1:*li:=nextLineItem():SalesLineItem:Salemsg1()Ø:POST1:*[i:=1..10] li:=nextLineItem():SalesLineItem:SaleFigure 7.6: Iteration with and without recurrence values:Amsg1()1:*[i:=1..10] msg2()myB:Bmsg1(){for i:=1 to 10{myB.msg2()myC.msg3()}}Ø2:*[i:=1..10] msg3()myC:CFigure 7.7: Multiple message within the same iteration clauseRepresenting creation of instances The UML creation message is create which is independent of programminglanguages, shown being sent to the instance being created. Optionally, the newly created instancemay include a symbol (See Figure 7.8).¹¹U+ND»²²msg1():POSTcreate(cashier)>:SaleFigure 7.8: Instance CreationA IE:N:R¥CXN message can optionally take parameters when some attributes of the object to be created need tobe set an initial value.Representing message number sequencing The order of messages is illustrated with sequence numbers,as shown in Figure 7.9. The numbering scheme is:1. The first message is not numbered. Thus, YvA¦h-|§ ¤£ is unnumbered.Report No. 259, July 2002UNU/IIST, P.O. Box 3058, Macau
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UNU/IISTInternational Institute for
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UNU/IISTInternational Institute for
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ContentsiContents1 Introduction 11.
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Contentsiii8.3 Questions . . . . .
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Chapter 1IntroductionTopics for Cha
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Introduction to Software Engineerin
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Chapter 2Software Development Proce
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Software Development Process 7Devel
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Software Development Process 9There
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Evolutionary Development 11Requirem
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¦§¤Questions 13Source of errorEf
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Chapter 3Introduction to OO Develop
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Mastering Complex Systems 17The pro
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Mastering Complex Systems 19roots a
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Mastering Complex Systems 215. A co
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The Rest of The course 23Main funct
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Questions 253. Fred is a Dodge deal
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Chapter 4Requirement Capture and An
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Understanding requirements 29Use ca
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Understanding requirements 31Ref #
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Use Cases: Describing Processes 334
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Page 51 and 52: Use Cases: Describing Processes 41B
Page 53 and 54: Use Cases: Describing Processes 43C
Page 55 and 56: Questions 45How can you, as a requi
Page 57 and 58: Chapter 5Requirement Capture and An
Page 59 and 60: Conceptual Model - Concepts and Cla
Page 65 and 66: Conceptual Model - Associations 55*
Page 67 and 68: Conceptual Model - Associations 57b
Page 69 and 70: Conceptual Model - Associations 59A
Page 71 and 72: Conceptual Model - Associations 61B
Page 73 and 74: Conceptual Model-Attributes 63uses:
Page 75 and 76: Conceptual Model-Attributes 65Keep
Page 77 and 78: Conceptual Model-Attributes 67Desig
Page 79 and 80: Steps to Create a Conceptual Model
Page 81 and 82: Recording Terms in the Glossary 71R
Page 83 and 84: Questions 73Term Category CommentsB
Page 85 and 86: Questions 7513. Consider the follow
Page 87 and 88: Chapter 6System Behaviour: System S
Page 89 and 90: System Sequence Diagram 79Make Phon
Page 91 and 92: System Sequence Diagram 81Buy Items
Page 93 and 94: Contracts for System Operations 83d
Page 95 and 96: Contracts for System Operations 856
Page 97 and 98: Contracts for System Operations 87R
Page 99 and 100: Chapter 7Design Phase: Collaboratio
Page 101: Collaboration Diagrams 91this reque
Page 105 and 106: Collaboration Diagrams 95msg1()1a:[
Page 107 and 108: Creating Collaboration Diagrams 977
Page 109 and 110: Creating Collaboration Diagrams 99T
Page 121 and 122: Creating a new ¿-ÀÁ†ÆDÂ;Ã]
Page 135 and 136: Questions 125(a) an object Ù recei
Page 137 and 138: Chapter 8Implementing a DesignTopic
Page 139 and 140: Mapping a Design to Code 1298.2.1 D
Page 141 and 142: Mapping a Design to Code 1318.2.3 D
Page 143 and 144: Mapping a Design to Code 133public
Page 145 and 146: Chapter 9Advanced Modelling Concept
Page 147 and 148: Iterative Development Process 137De
Page 149 and 150: Iterative Development Process 139Al
Page 151 and 152: Generalisation 1410..1CashPaymentSa
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Generalisation 143of the supertype
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Figure 9.9: Justifying the subtypes
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More about Associations 147Payment*
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More about Associations 149Storeadd
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Packages: Organizing Elements 151A
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Modelling Behaviour in State Diagra
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Chapter 10Summing UpTopics of Chapt
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Summing Up 165Conceptual ModelsCate
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¢¢¢¢¢Chapter 11Coursework11.1
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Bvis Car Hire Company: The Problem
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