Toggle that some @Entity class fields' are persistent or not with annotation and property.
Whether a field is persistent or not is judged by Hibernate using @Transient,
and if we'd like to treat a field persistent on development and transient on production,
@Transient should be given after checking Spring properties.
To achieve this, we listen Spring application loaded event,
checking all @Entity classes and modify class definition using Javassist.
./gradlew bootRun
Change property:
./gradlew bootRun -Dapplication.persistent-conditionally.os-foo=false
./gradlew test
Change property:
./gradlew test -Dapplication.persistent-conditionally.os-foo=false