Frequent state transitions, relying on coding to realize business, ultimate solution, process engine to process process and state
Docking various order scenarios, micro-business, O2O, Leipai, Baogou. . . It needs to have good extensibility. At present, the algorithm is abstracted through the template method mode.
In the analysis and design of object-oriented systems, we often encounter such a situation: for a certain business logic (algorithm implementation), there are different detailed implementations in different objects, but the logic (algorithm) framework (or general application algorithm) is the same. Template Method provides an implementation framework for this situation. The Template Method pattern uses inheritance to achieve this: put the logic (algorithm) framework in the abstract base class, define the detailed interface, and implement the details in the subclass.
Sub-library and sub-table in business
Process the logistics data synchronized by its system, save it first, and then try
Other requirements, order splitting, merging...
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The old driver is still very important, the old driver's solution to the problem comes from the production practice......