About detach

101-110 of 164Refresh
Forum
2

List of Enum Values in an entity

this tutorial on detached Guest instances, and in detached objects only fields that have been loaded before detachment (e.g. defined as eager rather than lazy, or accessed) are available. One way to solve
Forum
2

Puzzler: Not getting cascades on read from Spring context

Fetching doesn't work by default for detached objects. Please read see this issue and as a workaround you may try setting objectdb.temp.no-detach. Would it make sense to call entityManager.merge(o ... , if possible, to arrange fetching of the relevant data before detachment. dhosek
Forum
2

Accessing objects to make them available after EntityManager close?!

objects? Many thanks Closing the EntityManager changes the state of the managed object to detached, and in detached objects only fields that have already been loaded when the EntityManager ... the fetch policy as EAGER or run queries with JOIN FETCH. Alternatively you may consider the non standard "objectdb.temp.no-detach" extension. mmmndt2015
Forum
2

UserException - Object User#2 belongs to another EntityManager

.JpaQuery.getResultList(JpaQuery.java:686) ... 107 more The problem can be fixed by detaching User ... for running the query). When an EntityManager is closed all its objects should be detached automatically ... as soon as possible. Accordingly, detaching the object before using it as a query parameter
Result
2

ObjectDB version 2.6.4

Added memory only database mode. Added an option to cascade detachment to embedded objects. Added ... memory management in multi flush transactions. Extended detachment of embedded objects to collections ... handling large objects with long primary keys as query results (issue #1717). Fixed detachment
Forum
2

Can't get arraylist/vector type attributes

entity objects become detached, and content that has not been retrieved from the datbase ... the EntityManager or load it eagerly (FetchType.EAGER). See also "objectdb.temp.no-detach" as a possible quick workaround. Loading it eagerly worked
Forum
2

Different behavior with persist() and queried instances?

the entity manager so my object gets detached. Between the persist() and the commit() call, my list ... .ArrayList). However, after detaching it becomes a regular java.util.Array again which of course
Forum
2

Dirty checking

, the JPA state diagram seems to indicate that post commit entities are automatically set to 'Detached ... , they won't be retrieved for the detached object. I'm not sure how ObjectDb handles that, am guessing
Forum
2

Does ObjectDB create one instance of each entity class on (web app) load ?

are configurable 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 than entity fetch graphs, too.       webel
Forum
2

Entity listener - event instead of object

). 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. lwalkowski