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Forum
7

problems with OEM license/enhancing

with the OEM license activation, we cannot start the application on another workstation. We receive a message ... , probably the OEM activation key is not available during enhancement. Check the location of the objectdb.jar file and make sure that the objectdb.conf file with the activation key is located in
Manual
7

Index Definition

field (similar to how primary keys behave). @Index represents either an ordinary index ... can only be defined on ordinary persistent fields (not on primary key / version fields). Composite Index A composite ... that ObjectDB maintains in the file system rather than in memory. The keys of the BTree
JDO Doc
6

JDO Predefined ID Classes

An object ID is a combination of a persistence capable class and a primary key. It provides ... for persistence capable classes with a simple single field primary key: Object IDs are used in many ... but should not be used as the type of a primary key field in a persistence capable class. For example
Manual
6

Auto Generated Values

generated for that field. This is primarily intended for primary key fields but ObjectDB also supports this annotation for non-key numeric persistent fields as well. Several different value generation ... for entity objects with no primary key fields defined (as explained in the previous section). The same
Manual
6

JPA Entity Fields

(Mapped By) fields Primary key (ID) fields Version field The first three groups (transient, persistent ... two groups (primary key and version fields) can only be used in entity classes. Primary key fields are discussed in the Primary Key section. Transient Fields Transient entity fields are fields
Result
6

Activation completed successfully!

> elements, one per licensed machine. Any non matching activation code is quietly ignored by ObjectDB. If you are using the ObjectDB OEM license - you should only activate ObjectDB on developer machines. Classes that are enhanced by the ObjectDB Enhancer (when using the OEM license) are signed
Forum
6

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 ... attached. Thanks. Could you please provide details on the primary key of JdoBlob2? Is it composite ... a combination of class + primary key and therefore it seems a bit strange to use it as the type
Manual
6

Retrieving JPA Entity Objects

of entity classes and to keep them simple as possible. Retrieval by Class and Primary Key Every entity object can be uniquely identified and retrieved by the combination of its class and its primary key ... whose primary key is 1: Employee employee = em.find(Employee.class, 1); Casting of the retrieved
Manual
6

Defining a JPA Entity Class [2011-02-11]

for persistent fields, how to define and use a primary key and what a version field is and how to use it. If you are already familiar with JPA you might have noticed that the Point entity class has no primary key ... defined primary key is not required. On the other hand, ObjectDB also supports explicit JPA primary
Manual
6

Defining a JPA Entity Class

for persistent fields, how to define and use a primary key and what a version field is and how to use it. If you are already familiar with JPA you might have noticed that the Point entity class has no primary key ... defined primary key is not required. On the other hand, ObjectDB also supports explicit JPA primary