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Manual
6

WHERE clause (JPQL / Criteria API)

difference in query execution time if proper indexes are defined. WHERE Filter in Multi Variable Queries In
Manual
6

Obtaining a JPA Database Connection

every thread usually has its own EntityManager instance while at the same time sharing a single
JDO Doc
4

javax.jdo.Transaction

until commit 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 in ... 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
JDO Doc
4

javax.jdo.Constants

_SERVER_TIME_ZONE_ID The name of the persistence manager factory element's "server-time-zone-id" attribute. The name of the persistence manager factory element's "server-time-zone-id" attribute ... " Since: JDO 2.1 See Also: PersistenceManagerFactory.getRetainValues() String PROPERTY_SERVER_TIME_ZONE_ID
JPA Doc
4

javax.persistence.criteria.CriteriaBuilder

: expression for current date Since: JPA 2.0 Expression<Time> currentTime() Create expression to return current time. Create expression to return current time. Returns: expression for current time Since: JPA
JPA Doc
4

javax.persistence.TemporalType

. Since: JPA 1.0 Learn how to define and use date and time fields in Chapter 2 of the ObjectDB/JPA manual. TemporalType DATE Map as java.sql.Date Map as java.sql.Date Since: JPA 1.0 TemporalType TIME Map as java.sql.Time Map as java.sql.Time Since: JPA 1.0 TemporalType TIMESTAMP Map as java.sql.Timestamp
JPA Doc
3

currentTime()

Method javax.persistence.criteria.CriteriaBuilder Expression<Time> currentTime() Create expression to return current time. Returns: expression for current time Since: JPA 2.0
JDO Doc
3

getServerDate()

Method javax.jdo.PersistenceManager Date getServerDate() Get the Date as seen by the server. Clients 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