Pro Jakarta Persistence in Jakarta EE 10: An In-Depth Guide to Persistence in Enterprise Java Development

© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2022

L. Jungmann et al.Pro Jakarta Persistence in Jakarta EE 10https://doi.org/10.1007/978-1-4842-7443-9_6

6. Entity Manager

Lukas Jungmann¹  , Mike Keith², Merrick Schincariol³ and Massimo Nardone⁴

(1)

Prague, Czech Republic

(2)

Ottawa, ON, Canada

(3)

Almonte, ON, Canada

(4)

HELSINKI, Finland

 

Entities do not persist themselves when they are created. Nor do they remove themselves from the database when they are garbage-collected. It is the logic of the application that must manipulate entities to manage their persistent lifecycle. Jakarta Persistence provides the EntityManager interface for this purpose in order to let applications manage and search for entities in the ...