ObjectDB Database Search

;call, if the retrieved entity is dirty, call EntityManager# detach  on it and then call pm.getObjectById   ... the entity to become impossible to commit. Option 2 with EntityManager# detach sounds robust ... . detach that would do the same; PM.detachCopy doesn't work. I found that ObjectDB's implementation

if they are implementing interfaces PersistenceCapable and Detachable after postprocesing and they do not. I ... PersistenceCapable and Detachable as Isaid earlier Tomasz Tomasz Wozniak The ObjectDB 2 Enhancer doesn't use

objects from Hibernate, detaches them and then persists them using ObjectDB. A tool ... answers! retrieves entity objects from Hibernate, detaches them and then persists them using ObjectDB

: After the commit and persist calls I do close the entity manager so my object gets detached . Between ... the odb specific fields (it is an objectdb.java.util.ArrayList). However, after detaching

that EntityManager is closed and the result object becomes detached . Since the relationship between Foo And Bar is lazy - it is unavailable in a detached Foo instance and the collection looks empty. support Support

(which has never been detached ). According to JPA - the merge operation is ignored for Customer - but cascaded to Item ... check, so merge is called only on detached entities. If objectdb follows jpa, maybe we should ask jpa

). You may create a copy of that object (maybe by JPA's  detach + merge or by JDO's detachCopy ). Then you may be able to compare on @PostUpdate the entity object after the update with the cloned detached entity object before the update. support Support

Paul. pedwards Paul Edwards The difference between the two tests is that Spring JPA returns detached ... after detach . Your Spring JPA test passes if you set eager fetch for that collection:   

is an unusual one, in that it keeps all objects in memory at all times, in a Detached state (I realise ... to happen would be for there to be some way to re-attach the detached salesman with some form of 'I

is selected). If a detached object is modified, it has to be merged (maybe merge is your missing method ... the beans, and then you do not have detached objects and merge is not required. This is how ObjectDB

and detach all managed entity objects: ... Rolling back a transaction - either by invocation of rollback or ... ; AlphaOne Ron Brennan It is correct. All the entity objects are detached on rollback

.get(0);     em. detach (unit);     unit.getChannelConfigurationSets ... in our webapp. A unit entity gets detached , the user edits it, its merged

, retrieving only the needed ones, creating new ones (which I want to commit), detaching the ones I've ... the activity to multiple threads. Another option is to detach specific objects from the persistence

that also suggests a new setting ("objectdb.temp.no- detach ") that may be useful for you. Regarding setting Spring Framework transactions in a way that JPA managed entities will not be detached on exiting

entities are automatically set to ' Detached ' state.  However, unless the relevant parts of the object graph have already been retrieved, they won't be retrieved for the detached object. I'm not

the EntityManager  managed entity objects become detached , and content that has not been retrieved ... ). See also "objectdb.temp.no- detach " as a possible quick workaround. support Support Loading it eagerly worked Unknown unknown

with a pre- detach loader that "visits" any data and relationships needed for particular views, rather than relying on one-size-fits-all EAGER. This pre- detach loader approach is even more flexible

the EntityManager after every operation your Company instance becomes detached . A detached entity

= {CascadeType.REFRESH, CascadeType. DETACH }) private ModelElementImpl element; @OneToMany (fetch = FetchType.EAGER, cascade = {CascadeType.REFRESH, CascadeType. DETACH }) private HashMap mappingMap = new

={CascadeType. DETACH ,CascadeType. MERGE ,CascadeType. REFRESH }) @JoinTable(name="PERSON_CONTRACT ... = FetchType. EAGER , cascade={CascadeType. DETACH ,CascadeType. MERGE ,CascadeType. REFRESH }, mappedBy

and starting Tomcat entity objects in the session will be detached . Thank you for this report. support Support

viewing TreeSet and TreeMap in the Explorer. Fixed detachment of entities by replacing proxy objects

method) it is filled automatically. Unless the Node object is detached , for example if the EntityManager

data from MySQL using JPA as entity objects, detach the retrieved entity objects and then persist

are automatically detached at the end transaction. Yes, if A holds an older version of that object

is the entity detached (why?). When I merge it, I can remove it without problems... The Customer class

. detach (sample); //just to be sure em.close(); emf.close(); System.out.println(sample.title

this difference by setting unloaded collections to null  on detachment , for both mapped an unmapped collections. support Support

Our application has some complex entities. We do batch update(merge detached entity) every 2 minutes. We find the period significant IO costs these days, and disappeared when turn off the batch updating. 1.ObjectDB is in embedded mode. 2.ObjectDB version is 2.3.7 3.Database file size is nearly

a detached entity object (e.g. after clear ). It doesn't seem to be related to the IDE that you use. support

to performance differences) when the EntityManager is closed or results are detached . In this case, LAZY

to be shared by threads, except maybe after detachment . support Support

with the whole C object, with all its parts, as a detached object. I know that I can express one level

fetch, detach , change and merge an object I get the following exception: Caused by: com.objectdb.o

You can retrieve all your objects, detach them, and then persist them to a new database

to use merge only to attach detached objects, and without mixing already managed objects. support

of is now provided under forum posting: Pre- detach loading: retrieval by navigation not working in

Szurgot The exception is thrown during detachment of an object (at the end of commit). Apparently the specific detached object that causes the exception has no id (primary key) fields. ObjectDB

setting objectdb.temp.no- detach ! Info: Builder []: Created: com.greensoft.objectdb.test.mini.entity ... .GS4223.tgz if I set experimental 'objectdb.temp.no- detach ' true on startup, I get INSTEAD (or maybe

to commit and open a new transaction). But this does not sound like a nice solution. We tried to detach ... two of the entity classes so I had a mix of attached and detached classes. Sorry for that. So I

Added support for JTA and Java EE Containers ( issue #8 ). Fixed a bug in indexing entity objects. Fixed a bug in fixing broken references in ObjectDB Doctor. Fixed a bug in modifying enhanced  detached embedded objects. Fixed a spring transformer (LoadTimeWeaver) problem. Fixed a class

Fixed Java Agent / Java EE / Spring enhancement bug. Fixed a bug in merging detached entity objects. Fixed unexpected  NullPointerException in client server mode. Fixed an exception in AVG query on non numeric values ( issue #107 ). Fixed a bug in handling JOIN queries with primary key fields.

I am frequently having an error when merging a detached object outside of a transaction. (Is this allowed? I am not trying to modify the object, just read data from it.) Here is a test case: package com.experiments; import javax.persistence.*; import java.util.HashMap; public class ErrorTest

optimization). Fixed a bug in viewing TreeSet and TreeMap in the Explorer. Fixed detachment of entities by

a NullPointerException on using a collection in a detached object ( issue #527 ). Fixed a bug of changing id type

of more than one class path root ( issue #554 ). Fixed a NullPointerException on detachment of some objects. Fixed Linux "Name or service not known" error on server stop.

Fixed a critical issue that may cause database corruption ( issue #630 ). Initial attempt to enable navigation through lazy loading from detached objects ( feature request #326 ). Improved  toString of criteria queries to use aliases ( issue #12 7). Fixed automatic variable naming in criteria

Fixed a bug of  duplicating new objects during merge . Fixed a username/password issue in using EntityManagerFactory 's getMetamodel . Fixed a bug in detachment of hollow objects on close ( issue #799 ). Fixed a Doctor exception ( issue #796 ). Fixed a Doctor bug in checking byte[] arrays

Second thing after @FetchGroup I've found is read-only hint for EM. You can specify this hint to EM when executing query meaning that returned data will never be edited or persisted. My understanding of this is that each entity returned from query is in detached state as default state. query

Added support of nested paths in JOIN FETCH. Added support of persisting collections and maps of user defined types. Added support of Google (Guava) collections. Added support of inheritance of ID fields. Added support of disabling detachment on rollback in JPA. Added support of using entity