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Bab 5 diagram uml dan prosess modeling 2010
 

Bab 5 diagram uml dan prosess modeling 2010

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    Bab 5 diagram uml dan prosess modeling 2010 Bab 5 diagram uml dan prosess modeling 2010 Presentation Transcript

    • BAB V Modeling dan UML(Unified Modelling Language)
    • Yang akan dipelajari1. Pengenalan UML2. Sejarah Singkat UML3. Bagian-bagian UML. – View. – Diagram4. Langkah-langkah Pembuatan UML.
    • 1. Pengenalan UMLa. Apa yang dimaksud dengan UMLb. Tujuan UMLc. Mengapa melakukan Modellingd. Apa yang dimaksud dengan Visual Modelling
    • A. Apa itu UML?• It is a notation; that is a set of diagrams and diagram elements that may be arranged to describe the design of a software system.• UML is not a process, nor is it a method comprising a notation and a process.• The OMG specification states: The Unified Modeling Language (UML) is a graphical language for visualizing, specifying, constructing, and documenting the artifacts of a software-intensive system. The UML offers a standard way to write a systems blueprints, including conceptual things such as business processes and system functions as well as concrete things such as programming language statements, database schemas, and reusable software components." 4
    • B. Tujuan UML• Provide users with a ready-to-use, expressive visual modeling language so they can develop and exchange meaningful models.• Provide extensibility and specialization mechanisms to extend the core concepts.• Be independent of particular programming languages and development processes.• Provide a formal basis for understanding the modeling language.• Encourage the growth of the OO tools market.• Support higher-level development concepts such as collaborations, frameworks, patterns and components.• Integrate best practices.
    • C. Mengapa melakukan Modelling• To easily communicate information between different stakeholders in an unambiguous way• To specify target-language-independent designs• To provide structure for problem solving• To provide mechanisms(abstractions, views, filtering, structure) to manage complexity• To be able to easily experiment to explore multiple solutions2010-05-252010-05-
    • D. Apa yang dimaksud dengan Visual Modeling? Order “Modeling captures essential parts of the system.” Dr. James Rumbaugh Item Ship via Business Process Visual Modeling is modeling using standard graphical Computer System notations Copyright © 1997 by Rational Software Corporation
    • Visual Modeling Captures Business ProcessUse Case Analysis is a technique to capturebusiness process from user’s perspective Copyright © 1997 by Rational Software Corporation
    • Visual Modeling is a Communication ToolUse visual modeling to capture business objects and logicUse visual modeling to analyze and design your application Copyright © 1997 by Rational Software Corporation
    • Visual Modeling Manages ComplexityCopyright © 1997 by Rational Software Corporation
    • Visual Modeling Defines Software Architecture User Interface (Visual Basic, Java) Business Logic (C++, Java) Database Server (C++ & SQL) Model your system independent of implementation languageCopyright © 1997 by Rational Software Corporation
    • Visual Modeling Promotes Reuse Multiple Systems ReusableComponents Copyright © 1997 by Rational Software Corporation
    • 2. SEJARAH UML• In 1965 the first object-oriented (OO) programming language, Simula I, was introduced.• Almost immediately interest in OO design began to rapidly grow.• This led to the emergence of numerous competing OO design methods.
    • Sejarah Singkat UMLNov ‘97 UML approved by the OMG Copyright © 1997 by Rational Software Corporation
    • Modeling with UML versi 2.0• Pemodelan dengan UML ada 13 diagram yang terbagi menjadi 3 kategori yaitu• Structure diagram Menggambarkan elemen dari spesifikasi yang mengabaikan time – Class diagram – Object diagram – Component Diagram – Deployment Diagram – Composite structure diagram – Package diagram• Behavior diagram Menggambarkan cirri-ciri behavior/methode/function dari sebuah system atau business process – Use case Diagram – Activity Diagram – State Machine Diagram• Interaction diagram Bagian dari behavior diagram yang menggambarkan object interactions – Communication – Interaction Overview – Sequence – Timing
    • From the primordial ooze…• With all these design methods came numerous modeling languages.• By the early 90’s there were 50+ distinct OO modeling languages.• Darwinian forces in the marketplace led to three dominate methods, each having its own modeling language.
    • The Big Three• Object-oriented Analysis & Design (OOAD) – Grady Booch• The Object Modeling Technique (OMT) – Jim Rumbaugh• The Object-oriented Software Engineering method (OOSE) – Ivar Jacobson• Each one had its strengths and weaknesses.
    • Booch (OOAD)• Very complex• The modeling language contained a formidable number of diagrams and resulting symbols• Allowed for effective low-level design and its fine grain detail was even useful for documenting code.• Good at OO design, weak at OO analysis
    • Rumbaugh (OMT)• OMT had a simpler modeling language• It was better at higher-level designs than Booch Method.• Good at OO analysis, weak at OO design
    • OO Analysis vs. OO Design• Analysis refers to understanding the problem.• Design refers to coming up with the solution.• Don’t confuse with broader use of word “design”• Text replaces “design” with “resolution”
    • Jacobson (OOSE)• Major feature was “use classes”• Use classes model how a system interacts with users (which might be other systems or end users)• Viewing things from the user’s perspective drove the design process• This made it good at very high-level design.
    • In Summary• Booch (OOAD) good at low-level design• Jacobson (OOSE) good at high-level design• Rumbaugh (OMT) good at the middle ground
    • Coming Together• Booch’s and Rumbaugh’s methods seemed to be evolving in a similar direction• In 1994 they joined forces in effort to merge their two methods• They both wanted to include use cases, so soon Jacobson joined them
    • The ‘U’ in UML• It became too difficult to successfully merge all three methods.• At same time, the software engineering community wanted an effective and standardized modeling language• The three then focused their efforts on unifying their three modeling languages
    • UML Was Born• In 1996 the Unified Modeling Language was introduced as UML 0.9 and then 0.91• Input was obtained from many, including TI, IBM, Microsoft, Oracle, and HP.• This led to UML 1.0 in 1997• Eventually, the semantics and flexibility was improved resulting in UML 2.0 in 2003
    • 3. Bangunan Dasar UML1. Sesuatu (Things)2. Relasi (Relationship)3. Diagram
    • UML™ - Elements Circle CircleA:Circle <<interface>> TypeWritercentreX:Int centreX:IntcentreY:Int=0 centreY:Int=0draw() draw()move(Int X, Int Y) move(Int X, Int Y) keyStroke() Class Object Interface Borrow Shapes Use-case Component Actor
    • UML™ - Relationships• Dependency• Association• Generalization• Realization
    • ThingsAda 4 Macam Things dalam UML :a.Structural Thingsb.Behavioral Thingsc. Grouping Thingsd.Annotational Things
    • A. Structural Things• Merupakan Bagian yang bersifat statis dalam model UML• Dapat berupa elemen-elemen yang bersifat fisik maupun konseptual• Ada 7 macam structural things, yaitu Kelas, Antarmuka, Kolaborasi, Use Case, Kelas Aktif, Komponen dan Simpul
    • Actors• An actor is someone or some thing that must interact with the system under development Registrar Professor Student Billing System Copyright © 1997 by Rational Software Corporation
    • 7 macam structural things (1)Kelas - Himpunan dari objek-objek yang berbagi atribut serta operasi yang sama - Digambarkan dengan empat-persegi- panjang yang memuat nama, atribut, serta operasi yang dimilikinya
    • 7 macam structural things (2)Antarmuka (Interfaces) - Kumpulan dari operasi-operasi yang menspesifikasi layanan (service) suatu kelas atau komponen/objek - Mendeskripsikan perilaku yang tampak dari luar dari suatu elemen - Jarang berdiri sendiri. - Biasanya dilampirkan pada kelas atau komponen yang merealisasikan antarmuka - secara grafis digambarkan dengan lingkaran kecil dengan namanya didahului dengan garis tegak (|)
    • 7 macam structural things (3)Kolaborasi (Collaboration) - Mendefinisikan interaksi aturan-aturan dan elemen lain yang bekerjasama untuk menyediakan perilaku yang lebih besar dari jumlah dari elemen-elemennya (sinergi) - Merepresentasikan pola implementasi yang memperbaiki sistem - secara grafis digambarkan dengan elipsi bergaris putus-putus yang memuat nama kolaborasi itu.
    • 7 macam structural things (4)Use Case - Deskripsi dari urutan aksi-aksi yang ditampilkan sistem yang menghasilkan suatu hasil yang terukur bagi suatu actor - Digunakan untuk menstrukturkan perilaku pada suatu model - Digambarkan dengan elips tegas yang berisi namanya
    • 7 macam structural things (5)Kelas Aktif (Active Class) - Kelas dimana Objek-objek yang dimilikinya memiliki satu atau lebih proses dan lebih jauh menginisialisasi suatu objek kendali. - Merupakan kelas biasa namun objek-objek yang dimilikinya menampilkan elemen-elemen yang memiliki perilaku konkuren. - secara grafis digambarkan seperti kelas biasa tetapi dengan batas yang lebih tebal, yang memuat nama, atribut, serta operasi yang dimilikinya.
    • 7 macam structural things (6)Komponen (Component) -Bagian fisik dan bagian yang dapat digantikan pada suatu sistem. - Secara grafis digambarkan dengan empat-persegi- panjang seperti kelas tetapi ditambahi tab.
    • 7 macam structural things (7)Simpul (Node) - Elemen fisik yang eksis saat aplikasi dijalankan dan mencerminkan suatu sumber daya komputasi. - Kumpulan komponen mungkin hadir dalam simpul dan mungkin juga berpindah-pindah dari suatu simpul ke simpul yang lain. - secara grafis digambarkan sebagai kubus yang berisi namanya.
    • B. Behavioral Things- Merupakan bagian yang dinamis pada model UML- Mencerminkan perilaku sepanjang ruang dan waktu.- Ada 2 macam behavioral things : 1. Interaksi 2. State
    • Behavioral ThingsInteraksi- Suatu perilaku yang mencakup himpunan pesan-pesan yang diperlukan untuk menyelesaikan suatu fungsi tertentu- Terdiri dari pesan-pesan, urutan aksi (perilaku yang dihasilkan oleh sebuah pesan), link (hubungan antar objek-objek)- Secara grafis, pesan digambarkan dengan tanda panah tegas yang sering memuat nama operasinya
    • Behavioral ThingsState- Perilaku yang menspesifikasi unsur kedudukan suatu objek atau interaksi-interaksi sepanjang waktu dalam menanggapi event-event yang terjadi.- Penggambaran suatu state memuat beberapa unsur yaitu state itu sendiri, transisi (perubahan dari suatu state ke state lainnya), event (suatu keadaan yang memicu sebuah transisi, serta aktivitas (tanggapan terhadap transisi)- Digambarkan sebagai empat-persegi-panjang yang sudut-sudutnya melengkung, yang memuat namanya (serta substate didalamnya, jika ada)
    • C. Grouping Things- Bagian pengorganisasi dalam UML- Dalam penggambaran model UML yang rumit kadang diperlukan penggambaran paket yang menyederhanakan model- Paket berguna bagi pengelompokkan sesuatu, misalnya model-model serta subsistem-subsistem.
    • D. Annotational Things- Bagian yang memperjelas model UML- Dapat berupa komentar yang memperjelas fungsi serta ciri-ciri tiap elemen dalam model UML
    • RELATIONSHIP- Hubungan-hubungan yang terjadi antarelemen dalam UML- Ada 4 macam relationship dalam UML, yaitu Dependency, Asosiasi, Generalisasi, Realisasi
    • Relationships• Relationships provide a pathway for communication between objects• Sequence and/or collaboration diagrams are examined to determine what links between objects need to exist to accomplish the behavior -- if two objects need to “talk” there must be a link between them• Three types of relationships are: – Association – Aggregation – Dependency Copyright © 1997 by Rational Software Corporation
    • Relationships• An association is a bi-directional connection between classes – An association is shown as a line connecting the related classes• An aggregation is a stronger form of relationship where the relationship is between a whole and its parts – An aggregation is shown as a line connecting the related classes with a diamond next to the class representing the whole• A dependency relationship is a weaker form of relationship showing a relationship between a client and a supplier where the client does not have semantic knowledge of the supplier• A dependency is shown as a dashed line pointing from the client to the supplier Copyright © 1997 by Rational Software Corporation
    • Finding Relationships• Relationships are discovered by examining interaction diagrams – If two objects must “talk” there must be a pathway for communication RegistrationManager Registration Math 101: Manager Course 3: add student(joe) Course Copyright © 1997 by Rational Software Corporation
    • Relationships ScheduleAlgorithmRegistrationForm RegistrationManager addStudent(Course, StudentInfo) Course name numberCredits Student open() name addStudent(StudentInfo) major Professor name CourseOffering tenureStatus location open() addStudent(StudentInfo) Copyright © 1997 by Rational Software Corporation
    • Multiplicity and Navigation• Multiplicity defines how many objects participate in a relationships – Multiplicity is the number of instances of one class related to ONE instance of the other class – For each association and aggregation, there are two multiplicity decisions to make: one for each end of the relationship• Although associations and aggregations are bi- directional by default, it is often desirable to restrict navigation to one direction• If navigation is restricted, an arrowhead is added to indicate the direction of the navigation Copyright © 1997 by Rational Software Corporation
    • Multiplicity and Navigation ScheduleAlgorithmRegistrationForm 0..* 1 RegistrationManager addStudent(Course, StudentInfo) 1 Course name 0..* numberCredits Student open() addStudent(StudentInfo) major 1 3..10 Professor 1..* 4 CourseOffering tenureStatus location 1 0..4 open() addStudent(StudentInfo) Copyright © 1997 by Rational Software Corporation
    • Inheritance• Inheritance is a relationships between a superclass and its subclasses• There are two ways to find inheritance: – Generalization – Specialization• Common attributes, operations, and/or relationships are shown at the highest applicable level in the hierarchy Copyright © 1997 by Rational Software Corporation
    • Inheritance ScheduleAlgorithmRegistrationForm RegistrationManager addStudent(Course, StudentInfo) Course name RegistrationUser numberCredits name Student open() addStudent(StudentInfo) major Professor CourseOffering tenureStatus location open() addStudent(StudentInfo) Copyright © 1997 by Rational Software Corporation
    • Dependency (Kebergantungan)- Hubungan dimana perubahan yang terjadi pada suatu elemen independen (mandiri) akan mempengaruhi elemen yang bergantung padanya (elemen yang tidak mandiri – independen).- Secara grafis digambarkan dengan tanda panah putus-putus.
    • Asosiasi- Menghubungkan antara objek satu dengan objek yang lainnya; bagaimana hubungan suatu objek dengan objek lainnya.- Suatu bentuk asosiasi adalah agregasi yang menampilkan hubungan suatu objek dengan bagian-bagiannya.- Secara grafis digambarkan dengan garis tegas tanpa tanda panah.
    • Generalisasi- Hubungan dimana objek anak (descendent) berbagi perilaku dan struktur data dari objek yang ada diatasnya (objek induk – ancestor).- Arah dari atas ke bawah (dari objek induk ke objek anak disebut spesialisasi)- Arah dari bawah ke atas disebut generalisasi- Secara grafis digambarkan sebagai garis yang ujungnya berkepala panah (atau bentuk segitiga) yang kosong, yang mengarah ke objek induk.
    • Realisasi- Operasi yang benar-benar dilakukan oleh suatu objek- Secara grafis digambarkan dengan tanda panah bergaris putus-putus dengan kepala panah kosong.
    • DiagramAda 9 jenis diagram, yaitu :1. Diagram Kelas2. Diagram Objek3. Use Case Diagram4. Sequence Diagram5. Collaboration Diagram6. Statechart Diagram7. Activity Diagram8. Component Diagram9. Deployment Diagram
    • View Pada UML• The system architecture is “the organizational structure of the system, including its decomposition into parts, their connectivity, interaction, mechanisms and the guiding principles that inform the design of a system.” [Rumbaugh 1998]• There is a typical “4+1 views” architecture of a system defined by UML: – Logical view, captures the vocabulary of the problem domain using classes and objects – Process view, depicts the threads and processes of the system as active classes – Implementation view, shows the physical code base of the system in terms of components – Deployment view, models the physical deployment of components onto computational nodes – Use case view, captures the requirements of the system using a set of use cases. This is the view “+1” to which all other views connect. 58/31 58/31
    • E. Categories of UML Diagrams• Berdasarkan model, UML Logikal & Physical• Berdasarkan sifatnya, UML Static(structural) & Dinamic (Behaviour) Static (Structural) Dynamic Logical •Class Diagram •Use Case Diagram Model •Object Diagram •Sequence Diagram •Collaboration Diagram •State Chart Diagram •Activity Diagram Physical •Component Diagram Model •Deployment Diagram
    • Langkah-langkah Penggunaan UML (1)• Buatlah daftar business process dari level tertinggi untuk mendefinisikan aktivitas dan proses yang mungkin muncul.• Petakan use case untuk tiap business process untuk mendefinisikan dengan tepat fungsionalitas yang harus disediakan oleh sistem. Kemudian perhalus use case diagram dan lengkapi dengan requirement, constraints dan catatan-catatan lain.• Buatlah deployment diagram secara kasar untuk mendefinisikan arsitektur fisik sistem.• Definisikan requirement lain (non-fungsional, security dan sebagainya) yang juga harus disediakan oleh sistem.• Berdasarkan use case diagram, mulailah membuat activity diagram.
    • Langkah-langkah Penggunaan UML (2)• Definisikan objek-objek level atas (package atau domain) dan buatlah sequence dan/atau collaboration diagram untuk tiap alir pekerjaan. Jika sebuah use case memiliki kemungkinan alir normal dan error, buatlah satu diagram untuk masing-masing alir.• Buarlah rancangan user interface model yang menyediakan antarmuka bagi pengguna untuk menjalankan skenario use case.• Berdasarkan model-model yang sudah ada, buatlah class diagram. Setiap package atau domain dipecah menjadi hirarki class lengkap dengan atribut dan metodanya. Akan lebih baik jika untuk setiap class dibuat unit test untuk menguji fungsionalitas class dan interaksi dengan class lain.• Setelah class diagram dibuat, kita dapat melihat kemungkinan pengelompokan class menjadi komponen-komponen. Karena itu buatlah component diagram pada tahap ini. Juga, definisikan tes integrasi untuk setiap komponen meyakinkan ia berinteraksi dengan baik.
    • Langkah-langkah Penggunaan UML (3)• Perhalus deployment diagram yang sudah dibuat. Detilkan kemampuan dan requirement piranti lunak, sistem operasi, jaringan, dan sebagainya. Petakan komponen ke dalam node.• Mulailah membangun sistem. Ada dua pendekatan yang dapat digunakan - Pendekatan use case, dengan meng-assign setiap use case kepada tim pengembang tertentu untuk mengembangkan unit code yang lengkap dengan tes. - Pendekatan komponen, yaitu meng-assign setiap komponen kepada tim pengembang tertentu.• Lakukan uji modul dan uji integrasi serta perbaiki model berserta codenya. Model harus selalu sesuai dengan code yang aktual• Piranti lunak siap dirilis.
    • Extending the UML• Stereotypes can be used to extend the UML notational elements• Stereotypes may be used to classify and extend associations, inheritance relationships, classes, and components• Examples: – Class stereotypes: boundary, control, entity, utility, exception – Inheritance stereotypes: uses and extends Copyright © 1997 by Rational Software Corporation – Component stereotypes: subsystem