Mechanism for reducing software coupling degree through software type data interaction bus

Abstract

The invention discloses a mechanism for reducing the software coupling degree through a software type data interaction bus, which is a universal development framework for realizing data interaction based on publishing and subscribing, and aims to isolate a publisher from a subscriber through bus type management so as to realize the purposes of reducing the software coupling degree and improving the software coupling degree. The output end of the subscriber is connected with the input end of the connection module, the service management module is in bidirectional connection with the publisher, the data publisher and the data subscriber are independently defined through isolation of a bus, and the publisher only cares about data collection and publishing and does not cares about how a user uses data; a subscriber only cares about required data and does not cares about how to generate the data, a publisher and the subscriber carry out uplink data and downlink data interaction through an asynchronous interface of a bus, the data is in a standard data format and is packaged into standard data interfaces of attributes, methods, notifications and the like, the bus is responsible for data synchronization and notifications, and the publisher and the subscriber carry out uplink data and downlink data interaction through the asynchronous interface of the bus. Standardized messages are transmitted on the bus, multiple data formats are supported, and a universal development framework is formed through the mechanism.

Description

technical field [0001] The invention relates to the technical field of software coupling, in particular to a mechanism for reducing software coupling through a software-type data interaction bus. Background technique [0002] Coupling (English: Coupling, dependency, or coupling force or coupling degree) is a software measure, which refers to the degree of information or parameter dependence between modules and modules in a program. Cohesion is a concept opposite to coupling. Generally speaking, low coupling means high cohesion and vice versa. Both coupling and cohesion were proposed by Larry Constantine who proposed the concept of structured design [1]. Low coupling is a characteristic of well-structured programs, and low-coupling programs are more readable and maintainable. [0003] At present, there are usually four ways to reduce software coupling: reducing software coupling through programming skills, reducing software coupling through design patterns, reducing softwar...

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Problems solved by technology

[0005] Reducing the degree of software coupling through design patterns Usually, the mode design is relatively single, and there are coupling degrees among multiple design modes; the granularity of reducing the coupling degree of a single mode is relatively coarse, which cannot solve the logical dependencies inside the module, and the fine-grained coupling degree still exists

[0006] Reduce the degree of software coupling by reducing logical dependencies. Most of the degree of software coupling is caused by direct or indirect dependencies between logics. The dependencies at the grammatical level can be resolved or reduced through programming skills, but the dependencies between logics are unavoidable. Calls between logics occur at any time. If you reduce software dependencies by reducing logic requirements, you will reduce coupling by sacrificing software functions.

[0007] Reducing software coupling through software frameworks is more dependent on existing software frameworks. Software frameworks are similar to design patterns that reduce coupling through top-level design, which can reduce coupling at the top level of software to a certain extent. However, the framework limits the implementation of software. The scope must be implemented according to the framework specifications, the flexibility of software implementation cannot be guaranteed, and the scalability is relatively poor. At the same time, similar to the pattern design, it cannot solve the logic coupling degree inside the module.

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