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BOOK: Professional Java EE Design Patterns
This is the forum to discuss the Wrox book Professional Java EE Design Patterns by Murat Yener, Alex Theedom; ISBN: 978-1-118-84341-3
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Old August 27th, 2015, 06:41 AM
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Default Entity Manager Dao Factory Thread Safety

In the example you have a MovieDaoFactory which is Application Scoped.

In it you inject an Entity Manager which is not a thread safe object.

Then you produce a MovieDaoImpl without specifying a scope which means it is produce as application scoped.

Which in turn means that the DAO uses a non thread safe instance of Entity Manager.

Am I wrong in the above thinking? Please explain!

Thank you in advance


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