[Design Modes] One code extraction function actually uses 3 design modes, the aircraft is too large to pull

The manager of Dubi came to Egan again for help

Egan took this job and looked at his dwindling hair

There are close to one hundred Dao interface classes. Is this work done by humans?

How to move this, it needs a crane, should I build it myself?

Suddenly Egan had a flash of inspiration: Then I will build a crane myself

First write a script to copy the Dao interface to the basic service module. The witty Egan thought of directly using DOS commands to migrate.

First, you need to create the target directory (mkdir command), and then execute the copy command, which is probably like this

After thinking about it, one by one execution was slow in the past, so let's write a program.

Egan conceived the main components:

Copy Dao interface and Dao.xml to the corresponding basic service module
Copy entity classes (dto, entyty, etc.) to the corresponding data interface service module
Analyze the Dao interface to remove internal impurities to obtain the DataServiceIntf interface and save it to the data interface service module
Analyze the Dao interface to remove the internal impurity solution; the analytic method gets the parameters and turns the abstract method into a concrete method, and calls Dao's corresponding method internally. Save to the basic service module class name XXXDataService

That's almost it, after classification, it becomes three categories:

Copy files without parsing
Need to parse and process
Files that do not need to be processed (used to match the above 4 components)

In this way, an interface class and three abstract methods are abstracted

Then the Dao interface classes, Dao.xml, and entities are directly copied. The difference here is that the path of the target file is different. Then you can write a moderate abstract class to abstract the target file path.

The interface and abstract class are almost written, and then all the classes are created first. The class diagram is almost like this

Write Dao file processor implementation class

Write entity file processor implementation class

Perfect, the copy method is finished like this.

15.5.png

Like, Dao transfer DataServiceIntf has also been written

Egan continues to write the remaining classes

The preparation is complete.

Finally, only the startup class is left, and the file traversal processing is required

Tick tick

The writing is finally finished

Start a try. All successfully processed.

Completed the task in less than a day, hahaha, brag about it, celebrate, and have dinner tonight

Hee hee, I won’t tell the manager of Dubi today that it’s finished, just take a dip, and tell him that it’s finished tomorrow, let him give him a wave of rewards.