Advanced design patterns

A tour of advanced design patterns in Python, including MVC, KVO and ORM.

Transcript

1. Złożone wzorce projektowe MVC, KVO, ORM. Z czym to się je?
2. Marek Stępniowski http://stepniowski.com @mstepniowski
3. Gamma, et al. Design Patterns Time Hunt, Thomas The Pragmatic Programmer Martin Fowler Patterns of Enterprise Application Architecture Cormen, et al. Introduction to Algorithms Kent Beck Test-Driven Development Python Abelson, Sussman Structure and Interpretation of Computer Programs Chris Okasaki Purely Functional Data Structures My first language Stages of a programmer Level 9000 0
4. Gamma, et al. Design Patterns Hunt, Thomas The Pragmatic Programmer Cormen, et al. Introduction to Algorithms thon
5. t al. erns as atic er Martin Fowler Patterns of Enterprise Application Architecture Test-Driven Development Abelson, Sussman Structure and Interpretation of Computer Programs
6. Wzorce projektowe Architektura dużych aplikacji w Pythonie last year
7. Design pattern def. General reusable solution to a commonly occurring problem within a given context in software design. A design pattern is a description or template for how to solve a problem that can be used in many different situations. last year
8. Alan Shallowey James R. Trott last year
9. Abstract Factory Factory Method Builder Prototype Singleton Adapter Bridge Composite Decorator Facade Flyweight Proxy Chain of Reponsibility Command Interpreter Iterator Mediator Memento Observer State Strategy Template Method Visitor DP last year
10. Adapter Bridge Composite Decorator Facade Flyweight Proxy Memento Observer State Strategy Template Method Visitor Multiton Object Pool RAII Front Controller Null Object Publish/Subscribe Blackboard Servant Specification CC last year
11. Foreign Key Mapping Association Table Mapping Dependent Mapping Embedded Value Serialized LOB Single Table Inheritance Class Table Inheritance Concrete Table Inheritance Inheritance Mappers Metadata Mapping Database Session State Gateway Mapper Layer Subtype Separated Interface Registry Value Object Money Special Case Plugin Service Stub Record Set PoEAA last year
12. Embedded Value Serialized LOB Single Table Inheritance Class Table Inheritance Concrete Table Inheritance Inheritance Mappers Metadata Mapping Separated Interface Registry Value Object Money Special Case Plugin Service Stub Record Set Model Template View Model View Presenter Model View ViewModel Layers KVO KVC inne last year
13. hipotetyczna firma last year
14. Adapter Abstract Factory Method Factory Template Method Null Object Plugin Strategy Observer State 9 last year 9/86
15. My God! It’s full of patterns! last year
16. A B last year
17. A B last year
18. A B C last year
19. A B C last year
20. A B C last year
21. Patternitis last year
22. No silver bullet! last year
23. MVC ORM bindings KVO KVC delegate responder chain run loop observer unit of work data mapper identity map active record
25. MVC Model View Controller
26. Controller Model View MVC
27. Controller Model View MVC
28. Controller Model View MVC
29. +notify(*) Observer +notify(*) ObserverA +notify(*) ObserverB notifyObservers(*) for observer in observerCollection: observer.notify(*) +registerObserver(1) +unregisterObserver(1) +notifyObservers(*) observerCollection Observable Observer
30. View Model Model 1
31. Front Controller View Model Model 1
32. Front Controller View Model Model 2 Template
35. MVC Controller View Model
36. MVC Controller View Model Subview1 Subview2
37. MVC Controller View Model Subview1 Subview2 Subcont1 Subcont2
38. MVC Controller View Model Subview1 Subview2 Subcont1 Subcont2
40. MVC Controller View Model Subview1 Subview2 Subcont1 Subcont2
41. MVC Controller View Model Subview1 Subview2 Subcont1 Subcont2 responder chain
42. MVC Controller View Model Subview1 Subview2 Subcont1 Subcont2 first responder
43. MVP Controller View Model Subview1 Subview2
44. MVP Controller View Model Subview1 Subview2
45. MVP Controller View Model Widget1 Widget2 View Widget Presenter
46. KVC Key-Value Coding
47. KVC Model Widget1 Widget2 View Presenter Widget widget
48. KVC Model Widget1 Widget2 View Presenter Widget widget.widget2
49. KVC Model Widget1 Widget2 View Presenter Widget widget.widget2.attr attr @avg @count @min @sum @distinctUnionOfSets
50. KVO Key-Value Observing
51. setName @property changed:name
52. bindings
53. run loop
54. ember • MVC • Templates • KVC/KVO • MVP • Templates • KVC/KVO • bindings • run loop
55. Person = Ember.Object.extend({ firstName: null, lastName: null, fullName: Ember.computed(function(key, value) { // getter if (arguments.length === 1) { var firstName = this.get('firstName'); var lastName = this.get('lastName'); return firstName + ' ' + lastName; // setter } else { var name = value.split(" "); this.set('firstName', name[0]); this.set('lastName', name[1]); return value; } }).property('firstName', 'lastName') }); var person = Person.create(); person.set('fullName', "Peter Wagenet"); person.get('firstName') // Peter person.get('lastName') // Wagenet
56. ORM Object-relational mapping
57. ORM Active Record Data Mapper Unit of Work
58. Active Record
59. class Person(Entity): name = Field(String(128)) addresses = OneToMany('Address') class Address(Entity): email = Field(Unicode(128)) owner = ManyToOne('Person')
60. Data Mapper
61. Unit of Work
62. Identity Map
63. Lazy Load
64. ORM Active Record Data Mapper Unit of Work
65. ORM Active Record Data Mapper Unit of Work
66. Marek Stępniowski http://stepniowski.com @mstepniowski
67. http://stepniowski.com/p/patterns