About @Embedded

forum_thread

Eclipse4 RCP - No Persistence provider for EntityManager

Hello, I'm developing an Eclipse4 RCP application which uses ObjectDB and have the following problem after calling Persistence.createEntityManagerFactory("test.odb") : javax.persistence.PersistenceException: No Persistence provider for EntityManager I'm using the latest ObjectDB 2.6.2.b03. It is integrated in our target platform. It is noticed that since 2.6.2.b02 there is no more integrated javax.persistence & javax.transaction. #1 2015-06-09 12:20 Hello, I'm developing an Eclipse4 RCP application which uses ObjectDB and have the following problem ...

 
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Changes in detach behaviour?

Hello! Today i upgraded to 2.3.5_04. My program stopped working. After some debugging i found out that all fields of retrieved objects are on their default value till i first call a getter or detach them explicitly. Up to 2.3.4 they where initialized immediately. The problem in my case is that i have a Spring DAO. It does the following: I call for example getUserByName("blub). #1 2011-12-28 10:31 Hello! Today i upgraded to 2.3.5_04. My program stopped working. After some debugging i found out that al ...

 
forum_thread

Explorer in 2.3

First, the new Explorer in ObjectDB is fantastic! This is exactly what we've needed - an easy way to do ad-hoc JPQL queries and navigate through the results and even make small changes to primitive data and Strings. After playing with it for a while, here is a list of additional features I'd love to have: 1. Export of selected data: a. Simple - Select a range of cells or a column header and copy text to the clipboard or save to a file (csv, html, etc..). (There appear to be copy menu options, but I cannot get them to work.) ... connections'. 2. When editing a field in an @Embedded object, I get an error message: "Attempt to lock a non entity ...

 
issue

JPA Composite Key make Object Db throws "Unexpected exception (Error 990)"

Hello Object Db community :) I am using this wonderful library and I caught a strange exception while testing the "composite key" feature in JPA. Let's see what I am doing : @Entity public class Book {     @EmbeddedId BookId id; } @Embeddable Class BookId {     Integer bookIdCountry;     ECountry country; } My BookId contains 2 attributes: One Integer and one enum. Bug Version: 2.4.0 Priority: Normal Status: Fixed Replies: 3 Type:  Bug ...

 
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Upgrade to 2.4.1_02

Hi there, The upgrade to 2.4.1_02 fixed the initial problem, however there still seems to be an issue. To me it appears that Embeddable might be being lazy loaded, but I cannot be sure. I have attached a testcase demonstrating this issue. Its failing on the merge. Thanks P. #1 2012-07-04 01:22 Hi there, The upgrade to 2.4.1_02 fixed the initial problem, however there still seems to be an issue. To ...

 
issue

out of memory error

we had a system crash on GC overhead limit reached, these are the last logs: Bug Version: 1.04 Priority: Normal Status: Active Replies: 1 Type:  Bug ...

 
forum_thread

Cannot initialize db after inserting a java.util.List

Hi, I've spent some time trying to figure this out without success, so I'm asking for much appreciated help. I have an entity class like this: class Test { private List<String> list = new ArrayList<String>(); } I can persist and retrieve the obj just fine using standalone program, but whenever I access the db through a servlet container I get this error: objectdb.java.util.ArrayList cannot be cast to com.objectdb.spi.TrackableSysType This happens during EntityManagerFactory initialization. #1 2010-12-24 03:05 Hi, I've spent some time trying to figure this out without success, so I'm asking for much appreciated he ...

 
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Corrupted Database or error in ObjectDBExplorer?

Hello, we have problems when we open our Database file with the ObjectDB-Explorer (2.6.8_b8). Can you analyze the problem and tell us if its a problem of the explorer or a real problem in the Database-File? An analysis with the DB-Doctor found no problems.   We observe the error if we try to open the Tree or Table Window for com.btc.ep.analysis.test.bl.internal.dmos.RequirementBasedTestCaseImpl  (its the 9th entity)   #1 2016-10-28 13:20 Hello, we have problems when we open our Database file with the ObjectDB-Explorer (2.6.8_b8). Can ...

 
forum_thread

Mismatch client-server protocol prefix

Hello! We migrated one of our legacy webservices to Spring Boot/Spring MVC. Now i have a strange problem. At first the app runs perfectly for a couple of hours. After that it stops working and I get the following exception: #1 2015-06-17 16:02 Hello! We migrated one of our legacy webservices to Spring Boot/Spring MVC. Now i have a strange prob ...

 
manual

SELECT clause (JPQL / Criteria API)

Explains how to use the SELECT clause and projections in a JPA/JPQL query. The ability to retrieve managed entity objects is a major advantage of JPQL. For example, the following query returns Country objects that become managed by the EntityManager javax.persistence.EntityManager JPA interface Inte ...