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Defines a single-valued association to another entity class that has many-to-one multiplicity.(Annotation of JPA)



Hello, I have a persistent class which looks something like this: @Entity public class Test { private String string; private Date date; @Transient private boolean test; // getters/setters } When I persist the class the transient 'boolean test' is stored in the database, maybe I am doing it wrong but I expect... false in your searched field). Try to store a true value and see that the Explorer still shows false value. The ...


Problem on JPA Merge Entity.

Hello, I have a problem with the EntityManager.merge() function. I set a property value of an entity (statement) with an other entity (newSingleConstraint). newSingleValue is already persisted. I do this myself (no use of cascade because sometimes the newSingleValue is already in database).   The statement update don't throw exception. And when i try to reload statement the value i have set before is a null value. I check with the Explorer, the statement has a null value on the property and the newSingleValue is present.... - in which methods it is true and in which false? In addition, verify that the same EntityManager ...


How to convert a boolean to an int in the query?

How to convert a boolean to an int in the query? I have five parameters of type boolean in the entity object - approveEmail, approvePhoneNumper, ... I can not sort them ORDER BY approveEmail, approvePhoneNumper, .... because the parameters equivalent. I want to sort them in the query by their sum ORDER BY (approveEmail + approvePhoneNumper + ... ) But I get an exception com.objectdb.o._PersistenceException: Invalid operand type boolean for operator + ... int ) approvePhoneNumber + ... true and Boolean.TRUE are converted to 1. false and Boolean.FALSE are ...


Enhanced classes problem

Hell, we have problem with the OEM enhancement licencing. When we used runtime licencing using machine activation code, everything works fine. But when we enhanced our classes with OEM licence, following errors occurs: ... ( "objectdb.temp.no-lazy-o2o-inverse" , "true" ) ; or as a JVM parameter: > java -Dobjectdb.temp.no-lazy-o2o-inverse=true ... Please let me know if it makes any difference. ...


Problem with byte arrays in JDO - ClassCastException

A bizarre ClassCastException is thrown if I attempt to obtain a byte array field as the result of a Query: Exception in thread "main" java.lang.ClassCastException: java.lang.Boolean cannot be cast to [B at spiffy.test.ObjectdbTest.main(ObjectdbTest.java:44) ... <field name = "id" primary - key = "true" / > <field name = "name" persistence - ...



Instances of the type EntityType represent entity types.(Interface of JPA)


Should I be able to persist a JFrame (or gui components in general)?

    I did the following: 1. (using Netbeans 8.02 & last available java 7 sdk) I sort of follow your tutorial(s) while applying the ideas to a sample that came with the IDE called GUIFormExamples (under samples). ... ( ) ; a. setVisible ( true ) ;   em. getTransaction ( ) . ... enough to define the persistence, 2 things will still be true. First, there ought to be a system that at least takes into account the ...


Entity is not related to ObjectDB, but i get exception from ObjectDB

Here is the description of the problem we are facing:
We have an entity DialogActionNew which previously was located in ObjectDB and recently has been transferred to PostreSQL. We are using ORM Hibernate
When getting this entity from PostgreSQL with the key EntityManager.find(id), we receive another entity - DialogNew, which has an exception: ...   <exclude-unlisted-classes > true </exclude-unlisted-classes > <properties > ... name = "hibernate.show_sql" value = "true" /> <property name = ...


Failing to read entities under load in multithreaded tests

Hi, We are experiencing an issue in our application that only occurs under load - we sometimes fail to read entities from the database. ... private boolean entriesInheriting = true ;   private long oidId ;   private ...