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Performance issues on aggregate query

these are the classes that are used: public class ObjectNode implements Serializable { private static final ... = new ArrayList<ObjectNode>(); ... public class ObjectProperty implements Serializable { private static

Object comparation never matches

Hi! I'm trying to compare 2 identical objects in SELECT with no success: @Embeddable public class PhoneNumber implements Serializable {     int countryCode;     long number ... "     ) }) public abstract class Customer implements Serializable {     Object principal; The entity

Navigation through Path to evaluate collection

; } @Entity public class ProductData implements Serializable {     @Id @GeneratedValue     private ... ; } @Embeddable public class ApiIdData_ implements Serializable {         private String apiName

Composite Index error 328

Hi , when i try to use this entity as shown below: package persistence.jpa.models; import javax.jdo.annotations.Indices; import javax.persistence.*; import java.io.Serializable; import ... UsrlistEntity implements Serializable { private static final long serialVersionUID

Items in list are doubled, when the entity class is not enhanced

implements Serializable { private static final long serialVersionUID = 1L; @Id ... and setters } @Entity public class Item implements Serializable { private static

turn off auto-serialization

Hi As far as I understand if you have a classe that implements Serializable and is referenced by an Entity it will be automatically stored using standard serialization mechanizm. Is there any option to turn off that feature so that if an un-enhanced (Serializable) class is referenced an error

Unable to store AtomicInteger

In the docs, all serializable types should be persistable. However, when I tried to persist a field of type AtomicInteger, I got the following message: Message: Failed to commit transaction: Attempt to store an instance of a non persistable type java.util.concurrent.atomic.AtomicInteger I am using

[ObjectDB 2.2.5_02] Unexpected exception (Error 990) com.objectdb.o.InternalException: java.lang.NullPointerException: null

class @Entity @Access(AccessType.PROPERTY) public class Chart implements Serializable ... Serializable { private long beginTime; private long endTime; private String periodType

Unlimited JPA Persistable Types

Ashton Hogan Actually you can persist any Serializable type by setting the configuration. There is no point in persisting most of the non serializable types such as Thread, because when retrieved from

Super class' field access fails

Serializable { private static final Integer decrease = 20; // percent // @Id private String

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Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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