12th recipe of 2019

The year is almost over and I still haven’t met my goal for the year (15 new recipes in my blog in 2019). This is the 12th and it has been around for, at least, 2 years. It is old but I still use it when working with JPA in my projects. Therefore, here goes a recipe about how to implement JPA generic converters to serialise data as JSON to the database and back.

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