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side, the current date and time expressions are re-evaluated on the server on every query execution to reflect

reflected by its persistent fields is stored. By default, any field that is not declared as

The JPA Metamodel API, which is introduced in JPA 2.0, enables examining the classes, fields and properties of the persistent object model, similarly to the Java reflection API. The main interface of the JPA Metamodel API is:

a Double object reflecting the average x value of all the Point objects in

query always returns a single result object, which is a Long object reflecting the number

directory on the server side). A new subdirectory with a name that reflects the current date

in the Explorer might display cached content that does not reflect the up to date data in

">@IdClass annotation. The ID class reflects the primary key fields and its objects

as reflected by its persistent fields is stored. Persistent fields, by default

that reflects the specific error that occurred. A transaction is always expected to be atomic