Refactoring PostgresqlDomainService to avoid duplication

[pascalgrimaud]

No description provided.

[codecov]

Codecov Report

Merging #378 (e5583da) into main (bf9f8cc) will not change coverage.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##                main      #378   +/-   ##
===========================================
  Coverage     100.00%   100.00%           
- Complexity       549       561   +12     
===========================================
  Files             93        93           
  Lines           1772      1781    +9     
  Branches          37        37           
===========================================
+ Hits            1772      1781    +9     

Impacted Files	Coverage Δ
...server/springboot/database/mysql/domain/MySQL.java	100.00% <100.00%> (ø)
...boot/database/mysql/domain/MySQLDomainService.java	100.00% <100.00%> (ø)
...ingboot/database/postgresql/domain/Postgresql.java	100.00% <100.00%> (ø)
...ase/postgresql/domain/PostgresqlDomainService.java	100.00% <100.00%> (ø)

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