Korean Advanced Topics

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Grails? ??? ??(separation of concerns) ???? ???? Grails ??????? ? ???? ???? ????:

???? ?? ??: business logic controlled by a middle tier that supports transactional demarcation. Artifacts are:

???? ?? ??? ??? ? ??? ???? ???. ??? ?? ??? ???? ??? ?? ? ?? ??? ?? ???? ?????.

Bean? ??(injection)? ???? ?? ?? ??? ?? ??? ?? ?????.

CountryService countryService

? ??? ?? CountryService ??? Bean? ????.

??? ?? ??? ??? ?? "byName" ??? true? ?????:

boolean byName = true

? ??? "countryService"?? ???? ??? Bean? ??? ????.

When beans should not be available for injection create an "available" property and set it false. This property can be used to avoid type conflicts.

boolean available = true

?? ??? ??? ?? ??? ??? ???? ??? ? ??? ?? ??, ? ??? ??? ?? ???? ????:

class SomeService {
    boolean transactional = false
    String transactional = "false" // this property is ignored for configurational purposes.
}