How can the functionality of the @Transactional annotation in Spring be modified to achieve the desired results?

The @Transactional annotation in Spring manages transactions at the method or class level. To modify its behavior, you can use the annotation's parameters or create custom aspects.

Main ways to modify:

• Annotation parameters:

  • propagation — defines the behavior of nested transactions.
  • isolation — transaction isolation level.
  • timeout — transaction timeout.
  • readOnly — optimization for read-only operations.
  • rollbackFor and noRollbackFor — specify which exceptions should trigger or prevent a rollback.

• Creating a custom aspect: You can write an aspect using Spring AOP that intercepts method calls and adds additional logic around transactions.

Example of using parameters:

@Transactional(propagation = Propagation.REQUIRES_NEW, rollbackFor = Exception.class)
public void someMethod() {
    // code
}