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EntityManager JPA or JDO impl and different behavior

another problem with lazy loading. In the attached project it's demonstrated how, by having a Map

@AttributeOverrides , and postgresql + own TYPE

front my keyboard with trying. It is only one file, having 135 line. Very much thank you for your help

Using Enum type in NamedQuery: Field is not found in type

I'm trying to switch an application that worked fine in Hibernate to ObjectDB and am having issues with queries that reference enum types. On my entity object is a static enum public static enum Type {     A,B,C }

Issue with alias

-> WHERE -> GROUP BY -> HAVING -> SELECT -> ORDER BY and you cannot use

OptimisticLockException

them? I would have thought that would be done automatically. Having used

@PrePersist Implementation

Hi Please help me.I have requirement like In my project having arround 100 pojos .I have used @EntityListener and @prePersist annotaions to invoke my action class .. But problem is how can i get oldvalue and new value of current form of pojo in side my @entity

Calendar in Criteria Querys

Hi, i am having troubles creating criteria querys for Calendar objects. As far as I can see CriteriaBuilder has no methods for checking if one Calendar is bevor or after another. Javas Calendar Class got such methods, but i dont know how to use those in my query. suez

Duplicate a table

Hello, I would like to know if it's possible to copy the content of a table representing one class of object to another table whithout having to use java object (no object instantiation) ? In fact, I would like to execute a native query like "select * into T0

Invalid/Missing licence when connecting, however correct licence is definitely present

>Most issues with licences that don't work are related to having the activation key in an

Enhancing a class causes it to not save changes.

, it's not causing any problems,   so feel free to tell me to take a hike, but I hate having