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Forum
2

Can't modify @EmbeddedId in ObjectDB Explorer

a primary key before persisting an entity, and it cannot be modified later. Therefore replacing a primary key requires creating a new entity object with the new primary key, copying the content ... to keep primary keys fixed (in RDBMS too). Accordingly, currently this feature has a low priority. zmirc
Forum
2

Mismatch client-server protocol prefix

it's happening. com.objectdb.o.UserException: Attempt to reuse an existing primary key value ... - it is weird, thanks for updating. The "Attempt to reuse an existing primary key value" exception is thrown ... ago but the primary key exception raises every few calls of our logging method. The cause is unclear
Forum
2

Slow searching with two indexes

- one is the primary key (id) and so is different for each object, and the other is an object reference that only has a few tens of different values.   When I query by just the primary key, it's (of course) extremely ... to get candidates for querying the primary key.  This is the slow part.   I'm looking for a way to optimise
JPA Doc
2

MapKeyJoinColumn.name

of the foreign key column for the map key. The table in which it is found depends upon the context. If the join is for a map key for an element collection, the foreign key column is in the collection table for the map value. If the join is for a map key for a ManyToMany entity relationship or for a OneToMany
JDO Doc
2

javax.jdo.Query

should be a String containing a SQL SELECT statement. Since: JDO 2.0   void addExtension(String key ... to this query. The key and value are not standard. An implementation must ignore keys that are not recognized. Parameters: key - the key of the extension value - the value of the extension Since: JDO 2.0 void
Forum
2

Broken @ManyToOne reference

is only part of the primary key now. Hi support,   just tried the fixed version. Two notes: 1. For a composite key ... class to represent composite primary keys in a portable JPA way. Apparently implementing that Hibernate ... , Vladimir Thank you for this report. Adjustments are needed to support the new partial primary key
JPA Doc
2

MapKeyColumn.name

Annotation Element javax.persistence.MapKeyColumn String name (Optional) The name of the map key column. The table in which it is found depends upon the context. If the map key is for an element collection, the map key column is in the collection table for the map value. If the map key
Issue
2

[ObjectDB 2.3.7_08] Unexpected exception (Error 990)

information that you require. Thank you. The stack trace indicates an unexpected primary key value ... been changed recently? How exactly the primary key is defined? Which value is used as a primary key in
Issue
2

InternalException

the specific detached object that causes the exception has no id (primary key) fields. ObjectDB supports ... I'm confused as to how this is possible. We're using an application id as the primary key so I ... is possible as a result of schema change, in which id fields are removed. Notice that changing the primary
Forum
2

JPA and handling large data sets

results ordered by the primary key, use the value of the primary key of the last object in one batch as a constraint in the next query execution, which will retrieve only objects with larger primary key as