About mapped

forum_thread

JDO sequences from ORM file

I want to use sequences in JDO without using annotations. Normally this is done with a package-X.orm file, where X is a value passed to the PersistenceManagerFactory as the value of property "mapping". I'm encouraged to see that the JDO zip that comes with ObjectDB includes the DTD/XSD for this type of file, though I can't see a mention of it in the manual. #1 2013-03-12 17:07 I want to use sequences in JDO without using annotations. Normally this is done with a package-X.orm file, where ...

 
forum_thread

Threading Problem (maybe with Criteria)

Hi all I found some threading problems I do not understand: here is the the link to the testcase http://www.advolux.de/weblink%20forum/test.zip #1 2013-08-26 21:15 Hi all I found some threading problems I do not understand: After creating some testobjects (i.e. ...

 
forum_thread

@Entity saved in Tomcat session - problem

Hi, I have found a problem, when storing @Entity object in Tomcat session. When starting or stopping Tomcat, I get nasty exception - please check attached log. Strange thing is, that after this exception everything works perfectly fine. The problem appears after using Enhancer. The nasty solution is to create copy of @Entity class as normal POJO and use it to store in session. The problem is, that we need the same logic for temporary users (without storing in DB) and permanent users (stored in database). A separate POJO makes the whole logic quite complicated.... session before shutdown) that failed due to an inverse (mapped by) field in the entity object. Version 2.0.3 should fix this ...

 
api-jpa

javax.persistence.Embedded

Specifies a persistent field or property of an entity whose value is an instance of an embeddable class.(Annotation of JPA)

 
api-jdo

Persistent.mappedBy

Name of the related member in the other class where this value is mapped (bidirectional relationship).(Annotation Element of javax.jdo.annotations.Persistent)

 
forum_thread

Understanding limitations of schema evolution

Hi, I am trying to understand the limitations of schema evolution and have read the material on http://www.objectdb.com/java/jpa/entity/schema as well as the link therein regarding manual schema update when changing a field’s name Yet, i am confused regarding how to handle the case where one re-factors a class by moving one if it's Fields to a different class. Is this case managable? Thanks #1 2014-10-31 12:31 Hi, I am trying to understand the limitations of schema evolution and have read the material on http://www.objectdb.c ...

 
api-jpa

javax.persistence.Embeddable

Defines a class whose instances are stored as an intrinsic part of an owning entity and share the identity of the entity.(Annotation of JPA)

 
api-jpa

AttributeOverride.name

(Required) The name of the property whose mapping is being overridden if property-based access is being used, or the name of the field if field-based access is used.(Annotation Element of javax.persistence.AttributeOverride)

 
api-jpa

SqlResultSetMapping.columns

Specifies the result set mapping to scalar values.(Annotation Element of javax.persistence.SqlResultSetMapping)

 
forum_thread

Is ObjectDB the only object database that supports JPA?

Other Object database does'nt support JPA?   #1 2012-09-07 13:01 Other Object database doesn't support JPA?   edit ...