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11

ClassCastException of same object type

I have ObjectDB partially working with my project. At the moment it seems to be saving objects and retrieving objects ok in the main project. However, when I make a plugin for the project, the new objects are persisted but not retrieved. I get the following error: java.lang.ClassCastException: org
Forum
11

Time Sequence Object Command DB

We (www.s2ssystems.com) have a time-sequential object command database.  I would like ... ) are create object, change object (fields), delete object, and object-method execution commands.   Method commands are generally used to trigger creation of transient objects.  The database can be branched
Manual
11

Setting and Tuning of JPA Queries

since the setter methods in Query and TypedQuery support method chaining (by returning the query object ... uses automatic optimistic locking to prevent concurrent changes to entity objects by multiple users ... that has to be applied on all the result objects that the query retrieves. For example, the following query
Forum
11

OutofMemory error with Object DB 2.0

after persisting 200 records and then the same transaction object from the same PersistentManager ... it will show what objects fill the heap. But one possible reason for OutOfMemoryError in ObjectDB 2.x ... recommended in ObjectDB 2.x, and impossible in ObjectDB 1.x). In that case, new objects are not
Forum
11

Searching lists within objects

want to search using cb.isMember passing an object. This however does NOT work. I'm uncertain ... you can only match isMember if you have a database object. This does not help as I'm never going to have the real object at search time. Trying to use join is problematic as for every extra attribute I
Forum
11

UserException - Object User#2 belongs to another EntityManager

CDI. Problem on method execution, which runs a NamedQuery: com.objectdb.o.UserException - Object 'com ... is thrown only when mixing entity objects of different entity managers (which is forbidden, since every EntityManager manages its own space of managed objects, and a managed object
Forum
11

GWT RPC is throwing serialization exception when I have object db date value

its Class object could not be loaded. For security purposes, this type will not be serialized.: instance ... for all of mine Data Transfer Object. But still I am getting this error. Note: (In gwt RPC you cannot use the Entity objects, You need srializable DTO objects to handle CRUD operations).     The objectdb
Forum
11

collection of embedded objects

1. In general, are there any restrictions of the use of @Embedded objects in collections, compared to @Entity? 2. If you have a large nested collection of @Embedded objects, and you remove the parent ... of @Embedded objects more expensive (time) than searching through collections of @Entity? Thanks
Forum
11

Object comparation never matches

Hi! I'm trying to compare 2 identical objects in SELECT with no success: @Embeddable public ... ;   Which is a part of Customer object: @MappedSuperclass @NamedQueries({     @NamedQuery(         name ... "     ) }) public abstract class Customer implements Serializable {     Object principal; The entity
Forum
11

2.7.3_03 Erroneous "Attempt to modify a primary key of a managed object"

key of a managed object", but my application is not trying to change the primary key.  (ObjectDB ... change, and save some space in memory. You can still use StringIdentity to represent object IDs ... and is the primary key used to save/restore the object into/out of the database.  Another user might try