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Manual
7

Obtaining a JPA Database Connection

every thread usually has its own EntityManager instance while at the same time sharing a single
Manual
7

Retrieving JPA Entity Objects

. Therefore, it is recommended to avoid unnecessary time consuming operations in no-arg constructors
Manual
7

Schema Update

ObjectDB tries to apply the specified schema updates every time a database is opened. When using client
Tutorial
7

Step 4: Run the Application

) When you run the application for the first time, a new ObjectDB database file is generated in
Tutorial
7

Step 4: Run the Application

for the first time, a new ObjectDB database file is generated in the db subdirectory under the ObjectDB
Manual
7

WHERE clause (JPQL / Criteria API)

difference in query execution time if proper indexes are defined. WHERE Filter in Multi Variable Queries In
Result
7

ObjectDB License

, the products, services, prices, and programs mentioned in this site at any time, at its sole discretion.
JDO Doc
5

javax.jdo.Transaction

time. Optimistic transactions do not hold data store locks until commit time. Returns: the value ... of the restoreValues property Since: JDO 1.0 boolean getRetainValues() If true, at commit time instances retain their field values. If true, at commit time instances retain their field values. Returns: the value
JDO Doc
4

javax.jdo.PersistenceManager

exist at that time. Further, if a relationship is established to this instance, then the transaction ... using this method can order their operations according to a single time source. Implementations use the setting of the server time zone to prepare a Date instance that represents UTC time
Forum
4

500Mb ObjectDb database opening issue

Hi, I have observed that 500 Mb objectDb database opening time is very slow (~3 seconds) for following code long time = System.currentTimeMillis(); m_EntityMgrFactory = Persistence ... (); LOGGER.info( String.format( "took [%d] ms", System.currentTimeMillis() - time ) ); Does exist