object oriented analysis and design ebook

Object | concept | design In object-oriented design and implementation, we must spend time and energy figuring out these concepts: abstraction, encapsulation, inheritance, and polymorphism to and object-

derived class. p103(53) Do not confuse the optional inclusion with the need for inheritance. Modeling an optional inclusion into a class where inheritance can lead to flooding. p108(54) When creating an inheritance hierarchy, try creating a reusable framework, rather than a reusable component. p112(55) If you use multiple inheritance in your design, let's say you made a mistake. If you don't make a mistake, you need to try to prove it. P120(56) If yo

classes in the system domain. (20) do not change operations into classes. Question any class whose name is a verb or a derived Automatic Word, especially a class with only one meaningful action. Consider whether the meaningful behavior should be migrated to an existing or undiscovered class. (21) We often introduce a proxy class when creating an analysis model for an application. In the design phase, we of

paragraphs, and other parts unrelated.b) Module Design:The idea of modular design is actually a kind of "divide and conquer" thought, divides a big task into several subtasks, each sub-task is relatively simple.After getting a program module, according to the function of the program module divided it into several sub-modules, if the size of these sub-modules is too large, but also can be divided into smaller modules. This process is implemented using

your system. Be especially careful with classes whose names contain driver, Manager, System, Susystem. Plan an interface instead of implementing one. Be careful with classes that have a large number of access methods defined in the public interface. A large number of access methods means that the relevant data and behavior are not centrally stored. Be cautious about classes that contain too many non-communicating behaviors. Another manifestation of this problem is that many get and set func

/objects in your system. Be especially careful about the classes whose names include Driver, Manager, System, and Susystem. Plan an interface instead of implementing an interface. Be careful with classes that define a large number of access methods in public interfaces. A large number of access methods mean that related data and behaviors are not stored in a centralized manner. Be careful with classes that contain too many non-communication behaviors. Another manifestation of this problem is

61 empirical principles of Object-Oriented Design Excerpted from the good revelation-Arthur J. Riel (1)All data should be hidden inside the class. P13 (2)The class user must be dependent on the common interfaces of the class, but the class cannot depend on its users. P15

number of access methods in public interfaces. A large number of access methods mean that related data and behaviors are not stored in a centralized manner.(15) Be careful with classes that contain too many non-communication behaviors. Another manifestation of this problem is in your application.ProgramMany get and set functions are created in the public interface of the class. (16) In an application composed of an object-

Object-Oriented Design, ORM, and nhib.pdf) The ORM design is actually an O-to-D process, that is, the data entity is finally generated by the object. however, the problem is that in traditional design, we must

Just like the location of Newton's three major laws in classical mechanics, the open-closed principle is the cornerstone of object-oriented reusable design (Object Oriented Design or OOD. Other

from other classes in the system domain. (20) do not change operations into classes. Question any class whose name is a verb or a derived Automatic Word, especially a class with only one meaningful action. Consider whether the meaningful behavior should be migrated to an existing or undiscovered class. (21) We often introduce a proxy class when creating an analysis model for an application. In the design