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Performance question

.g. a date field you want to query for. Is there an improvement in performance if I create a "mirror" date field in the original entity, removing the need to traverse through the referenced other entity? So, querying for "all objects with object.otherobject.date > 1.1.1980" is slower

Replication error on slave restart

recording files unless they are needed for slave servers that are currently offline. If a recording ... , master has not been restarted ever. 2) I opened master db with explorer [DATA PRESENT - AND UP TO DATE] 3 ... ), restarted and opened it with explorer [DATA PRESENT - BUT NOT UP TO DATE (more simular with slave

Entity listener - event instead of object

Hi, Currently I'm playing with entity listener to implement auditing with difference between values ... ;             final String entityName = event.getEntity().getClass().toString();             final Date transTime = new Date(); // new Date(event.getSource().getTimestamp());             final EntityMode


Annotation Element javax.persistence.Temporal TemporalType value The type used in mapping java.util.Date or java.util.Calendar. Since: JPA 1.0


Method javax.persistence.criteria.CriteriaBuilder Expression<X> greatest( Expression<X> x ) Create an aggregate expression for finding the greatest of the values (strings, dates, etc). Parameters: x - expression representing input value to greatest operation Returns: greatest expression Since: JPA 2.0


()is executed on a query and there is no result to return. This exception will not cause the current ... within this Throwable object information about the current state of the stack frames for the current


getPersistenceProviderResolver() Returns the current persistence provider resolver. Returns the current persistence provider resolver. Returns: the current persistence provider resolver Since: JPA 2.0 void


. This exception will not cause the current transaction, if one is active, to be marked for rollback. Since: JPA 1 ... information about the current state of the stack frames for the current thread. Returns: a reference


Method javax.jdo.spi.JDOImplHelper void registerDateFormat( DateFormat df ) Register a DateFormat instance for use with constructing Date instances. The default is the default DateFormat instance. If the new instance implements SimpleDateFormat, get its pattern for error messages. Parameters: df - the DateFormat instance to use Since: JDO 2.0


well as Date and its jdbc subtypes and Enum types. Since: JDO 2.2

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