AOP aspect programming ---- Basic Concept (3)
Aspective programming ideas is simple. From the course-oriented process, the programming to the object-oriented programming to the interface-oriented programming to the component, the history of the module programming. We can know that the evolution of programming methodology is a step-by-step "boundary" that expands programmed. So far, our programming world is "class, interface, or components". In this boundary, we believe that a class implements an interface, which cannot dynamically implement another interface, existing behavior It is basically fixed before compilation or is the method of internal definitions, or it is either inheritance and implementation of the interface inherited. However, in actual programming, we met "cross border", need multiple classes, interfaces, and component cooperation, such as multi-threaded concurrent access, program flow centralized control, serialization, and program status, and There are multiple "classes, interfaces, and component boundaries" to participate in the work that can be completed. In order to better handle multiple borders to complete the work of the same aspect, the facing programming appears. Here, we can refer to the integration of collaborative work together to work together to complete the same task. You can think that it is actually a bigger class. This class is mainly composed of the classes and interfaces in our OOP. Of course, these classes and interfaces are in this intimate, so that they can convert each other. In fact, this is not big, the appearance of the interface is not the behavior of dynamic changing classes? Aspective programming is just an extended extension, and this change is raised to this level. Write here, I feel quiet, but the world is still not quiet, because the actual use of this idea programming, it takes a long time, and more tool developers support.
In my future articles, I want to make a look at the concept: 1. Inter-Type Declarations Border Internal Type Declaration: Inter-Type declaration has many forms in AspectJ, using him to describe the relationship between classes, class itself member and Structural information. 2, join point connection point: The connection point is a point defined in the program process. 4, Crosscutting Concerns: Consider the boundary cross 5, PointCuts connection point set: The set of multiple connection points in the program runs. 5, Advice Notification Point Behavior: The connection point set is like a "structure" that includes multiple "structures", which does not have behavior, and its behavior is implemented by notification point behavior. The above nouns are mainly used in the introduction of aspectj.
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