About relation

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JPA Doc
3

javax.persistence.OptimisticLockException

trace elements that will be returned by getStackTrace() and printed by printStackTrace() and related ... printStackTrace() and related methods. This method, which is designed for use by RPC frameworks
JPA Doc
3

javax.persistence.PersistenceException

printStackTrace() and related methods. Sets the stack trace elements that will be returned by getStackTrace() and printed by printStackTrace() and related methods. This method, which is designed for use by RPC
JPA Doc
3

javax.persistence.PessimisticLockException

trace elements that will be returned by getStackTrace() and printed by printStackTrace() and related ... printStackTrace() and related methods. This method, which is designed for use by RPC frameworks
JPA Doc
3

javax.persistence.QueryTimeoutException

that will be returned by getStackTrace() and printed by printStackTrace() and related methods. Sets the stack trace elements that will be returned by getStackTrace() and printed by printStackTrace() and related methods
JPA Doc
3

javax.persistence.RollbackException

printStackTrace() and related methods. Sets the stack trace elements that will be returned by getStackTrace() and printed by printStackTrace() and related methods. This method, which is designed for use by
JPA Doc
3

javax.persistence.TransactionRequiredException

printStackTrace() and related methods. Sets the stack trace elements that will be returned by getStackTrace() and printed by printStackTrace() and related methods. This method, which is designed for use by RPC
JDO Doc
3

Persistent.dependent

Annotation Element javax.jdo.annotations.Persistent String dependent Whether related object(s) of this member are dependent and so deleted when this object is deleted. Returns: whether the related object(s) of this member are dependent Default value: "" Since: JDO 2.1
JDO Doc
3

Persistent.mappedBy

Annotation Element javax.jdo.annotations.Persistent String mappedBy Name of the related member in the other class where this value is mapped (bidirectional relationship). Returns: the related member in the other class Default value: "" Since: JDO 2.1
Forum
2

Performance problem

(probably related to the number of related objects) First version of code:     EntityManagerFactory emf ... which are in relations to USER class. Our main question after investigating application code is whay does ... . You wrote that there are only 4 EAGER relationships in User. Did you check which of them is related
JDO Doc
2

Constants.ORM_DTD_RESOURCE

Static Field javax.jdo.Constants String ORM_DTD_RESOURCE The name of the resource for the DTD of the standard JDO object-relational mapping metadata file. Since: JDO 2.1