I have a endpoint mapping a webservice which is used to insert in the dabatabase some keywords:

@Transactional(readOnly = false,isolation= Isolation.SERIALIZABLE)
public Source saveKW(...).

The input is a request.

I would like to add an interceptor on the method in order to validate the parameters. this one will read some values from the DB.

i would like that this interceptor is EMBED in the transaction declared for the endpoint (or this opposite). In other words, i want them to be in the same transaction.

Ideally im looking for something like this with annotation:

@Transactional(readOnly = false,isolation= Isolation.SERIALIZABLE)
@validator("KeyWordValidaor.class")
public Source saveKW(...)

where KeyWordValidaor will be class validating the parameters.

Have you any idea or short examples to implements this like this way or in a other real way?