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Manual
7

Paths and Types in JPQL and Criteria API

, a NullPointerException is thrown on any attempt to access a field or a method via a null reference. In
Manual
7

JPA Persistence Unit

classes and mapped superclasses), which are referred to by JPA as managed classes, as
FAQ
7

What is the Java Persistence API (JPA)?

programming. A JPA implementation (sometimes referred to as a JPA provider) is needed in order
Manual
7

JPA Query API

above, is referred to in JPA as dynamic query construction because the query string can be built dynamically
Manual
7

Setting and Tuning of JPA Queries

"LAZY". When LAZY is used result entity objects are returned as references (with no content
Manual
7

SELECT clause (JPQL / Criteria API)

FROM Country AS c Using path expressions, such as c.name, in query results is referred to as
Manual
7

ORDER BY clause (JPQL / Criteria API)

Alias variables are referred to as result variables to distinguish them from the identification
Result
7

How to upgrade from ObjectDB 1.0?

. To use embedded objects you must declare classes as embeddable (rather than the reference fields
JPA Doc
7

JPA Queries

are equivalent). Criteria Query Elements Criteria query elements are organized in this reference into
Manual
7

JPA / JDO Class Enhancer

using proxy objects), but persistent fields that reference entity objects directly