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JPA and Hibernate -- Manual Flush

Greg Charles
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Joined: Oct 01, 2001
Posts: 2840
    
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I've read in several places, including "Seam in Action" (Manning), that an important part of Hibernate not supported by JPA is manual flush. However, the JPA EntityManager does have a flush() method, so I'm a bit confused. Does it mean that JPA allows manual flushes, but you can't stop it from also auto-syncing to the database as it sees fit? Or does it mean that em.flush() won't have any effect unless using the Hibernate implementation of JPA?
 
It is sorta covered in the JavaRanch Style Guide.
 
subject: JPA and Hibernate -- Manual Flush
 
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