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Object Interaction

Adaptation and ExtensionBuschmann et al.: POSA 4, Wiley, 2007

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Observer

Object Interaction

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Mediator 1/2

Object Interaction

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Mediator 2/2

director->WidgedChanged(this)

DialogDirector

ShowDialog()

CraeteWidgets()

WidgedChanged( : Widged)

Widget

Changed()

Mediator

ListBox

GetSelection()

EntryField

SetText()

Button

FontDialogDirector

CreateWidgets()

WidgedChanged( : Widged)

GAMMA et al.:Design Patterns, Elements of Reusable Object-Oriented Software,Addison Wessley Longmann, 1998

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Command 1/2

Object Interaction

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Command 2/2

+Add(inout Document)

Application

+Add(in MenuItem)

Menu

+Clicked()

MenuItem

+Execute()

Command

+Open()

+Close()

+Cut()

+Copy()

+Paste()

Document

Command -> Execute ()

-End1

1

-End2

*

-End3

1

-End4

*

-End5

1

-End6

*

+Execute()+AskUser()

OpenCommand

+Execute()

PasteCommand

+Execute()

ConcreteCommand

+Execute()

MacroCommand

1

*

for all c in command

c->Execute();

Client

Receiver

Invoker

name = AskUser();

doc = new Document(name);

application->Add(doc);

doc->Open();

document->Paste();

receiver->Action();

*

*

GAMMA et al.:Design Patterns, Elements of Reusable Object-Oriented Software,Addison Wessley Longmann, 1998

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Memento

Object Interaction

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Data Transfer Object

Object Interaction

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Message

Object Interaction

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Bridge 1/2

Adaptation and Extension

Several different implementation (platform specific, runtime decision,).

Interface abstraction refinement.

Separate implementor hierarchy, providing various implementation.

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Bridge 2/2

GAMMA et al.:Design Patterns, Elements of Reusable Object-Oriented Software,Addison Wessley Longmann, 1998

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Object Adapter 2/2

GAMMA et al.:Design Patterns, Elements of Reusable Object-Oriented Software,Addison Wessley Longmann, 1998

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Chain of Responsibility

Adaptation and Extension

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Interpreter 1/3

Adaptation and Extension

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Interpreter 1/3

GAMMA et al.:Design Patterns, Elements of Reusable Object-Oriented Software,Addison Wessley Longmann, 1998

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Interpreter 1/3

GAMMA et al.:Design Patterns, Elements of Reusable Object-Oriented Software,Addison Wessley Longmann, 1998

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Interceptor

Adaptation and Extension

Registering out of-band service extensions

via predefined callback interfaces.

Trigger when specific events occur.

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Visitor 1/4

Adaptation and Extension

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Visitor 2/4

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Visitor 3/4

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Visitor 4/4

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Decorator 1/3

Adaptation and Extension

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Decorator 2/3

window->SetContents(

new BorderDecorator(

new ScrollDecorator(textView), 1

)

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Decorator 3/3

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Execute-Around Object

Adaptation and Extension

Constructor and destructor to perform pre- and post-sequence actions.

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Template Method

Adaptation and Extension

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Strategy

Adaptation and Extension

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Null Object

Napojenie DB.

Priehradky platov zamestnancov.

Adaptation and Extension

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Wrapper Facade

Adaptation and Extension

Avoid accessing low-level function-based APIs directly.

Faade interface partitioning,