Τεχνολογία Λογισμικού

Transcription

1 ΕΘΝΙΚΟ ΜΕΤΣΟΒΙΟ ΠΟΛΥΤΕΧΝΕΙΟ Σχολή Ηλεκτρολόγων Μηχανικών και Μηχανικών Υπολογιστών Τεχνολογία Λογισμικού, 7ο/9ο εξάμηνο Τεχνολογία Λογισμικού Ν.Παπασπύρου, Αν.Καθ. ΣΗΜΜΥ, Β.Βεσκούκης, Αν.Καθ. ΣΑΤΜ, Κ.Σαΐδης, ΠΔ 407,

2 Εισαγωγή στη UML (2/2)

3 UML diagrams Visual Paradigm CE Visual Paradigm olie

4 Static vs. Dyamic Desig Static desig describes code structure ad object relatios Class relatios Objects at desig time Does t chage Dyamic desig shows commuicatio betwee objects Similarity to class relatios Ca follow sequeces of evets May chage depedig upo executio sceario Called Object Diagrams

5 Object diagrams Shows istaces of Class Diagrams ad liks amog them: A object diagram is a sapshot of the objects i a system at a poit i time Object diagrams focus o represetig... Iteractios Sequece diagram Message passig Collaboratio diagram Operatio Deploymet diagram

6 Iteractios modelig: Sequece diagrams Iteractio diagrams describe how objects collaborate. A Sequece Diagram: Idicates what messages are set ad whe Time progresses from top to bottom Objects ivolved are listed left to right Messages are set left to right betwee objects i sequece

7 Iteractios modelig: Sequece diagrams

8 Iteractios modelig: Sequece diagrams Actor Lifelie Activatio Messages: call, retur, self Focus of cotrol: also called executio occurrece A tall, thi rectagle o a lifelie It represets the period durig which a elemet is performig a operatio. The top ad the bottom of the rectagle are aliged with the iitiatio ad the completio time respectively.

9 Iteractios modelig: Sequece diagrams

10 Iteractios modelig: Sequece diagram

11 Iteractios modelig: Collaboratio diagrams Collaboratio Diagrams show similar iformatio to sequece diagrams, BUT the vertical sequece is missig. Istead sequece diagrams use: Object Liks - solid lies betwee the objects that iteract O the liks are Messages - arrows with oe or more message ame that show the directio ad ames of the messages set betwee objects Emphasis is o static liks as opposed to sequece ( = timig, order of thigs) i the sequece diagram a.k.a. Commuicatio diagrams

12 Collaboratio diagram example

13 Collaboratio diagram example

14 Collaboratio diagram example

15 Collaboratio diagram example

16 Iteractios modelig: Activity diagrams Modelig of the dyamic aspects of a system, compoet, etc. Similar to "old school" graphical represetatio of algorithms Cocepts Activity / actio Flow (cotrol / object) Iitial / fial ode Decisio / merge Fork / joi

17 Activity diagram example

18 Activity diagram example

19 Activity diagram example

20 Activity diagram example

21 Activity diagram example

22 Activity diagram example

23 UML State diagrams Used to model behavior diagram i UML, usually refer to a sigle class to show the lifetime behavior of a sigle object to describe all of the possible states of a particular object or the system A state is like a 'mode of operatio' for objects of a class, which behave differetly depedig o their state (if applicable)

24 UML State diagrams Evets trigger trasitios betwee states Sigal evet: the arrival of a asychroous message or sigal Call evet: the arrival of a procedural call to a operatio Time evet: occurs after a specified time has elapsed Chage evet: occurs wheever a specified coditio is met Trasitios betwee states occur as follows: A elemet is i a source state A evet occurs A actio is performed The elemet eters a target state

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26 Compoet diagrams / Package diagrams Display compoets i a system ad their depedecies + iterfaces Explai the structure of a system Usually a physical collectio of classes Compoet vs package Diagrams: Compoet: all of the model elemets are private with a public iterface Package: oly display public items Both are used to group elemets ito logical structures

27 Compoet diagram examples

28 Compoet diagram examples

29 Deploymet diagrams Show the physical architecture of the hardware ad software of the deployed system Nodes Typically cotai compoets or packages Usually some kid of computatioal uit; e.g. machie or device (physical or logical) Physical relatioships amog software ad hardware Explai how a system iteracts with the exteral eviromet

30 Deploymet diagram example 1a

31 Deploymet diagram example 1b

32 Deploymet diagram example 2a

33 Deploymet diagram example 2b

34 Deploymet diagram example 2c