About long

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Wrong data stored in time only fields

DateTime AS r");         Long r = (Long) q.getSingleResult();                 System.out.println ... ) {         long dateTimeMs = dateTime.getTime();         long reminderMs  = dateTimeMs % 1000 ... ",         allocationSize=1     )     public static class DateTime {         private Long id
JPA Doc
2

count(x)

Method javax.persistence.criteria.CriteriaBuilder Expression<Long> count(   Expression x ) Create an aggregate expression applying the count operation. Parameters: x - expression representing input value to count operation Returns: count expression Since: JPA 2.0
JPA Doc
2

countDistinct(x)

Method javax.persistence.criteria.CriteriaBuilder Expression<Long> countDistinct(   Expression x ) Create an aggregate expression applying the count distinct operation. Parameters: x - expression representing input value to count distinct operation Returns: count distinct expression Since: JPA 2.0
JDO Doc
2

deletePersistentAll()

Method javax.jdo.Query long deletePersistentAll() Deletes all the instances of the candidate class that pass the filter. Returns the number of instances of the candidate class that were deleted, specifically not including the number of dependent and embedded instances. Dirty instances of affected
JDO Doc
2

deletePersistentAll(parameters)

Method javax.jdo.Query long deletePersistentAll(   Map parameters ) Deletes all the instances of the candidate class that pass the filter. Parameters: parameters - for the query Returns: the number of instances of the candidate class that were deleted Since: JDO 2.0 See Also: deletePersistentAll()
JDO Doc
2

deletePersistentAll(parameters)

Method javax.jdo.Query long deletePersistentAll(   Object... parameters ) Deletes all the instances of the candidate class that pass the filter. Parameters: parameters - for the query Returns: the number of instances of the candidate class that were deleted Since: JDO 2.0 See Also: deletePersistentAll()
JDO Doc
2

getKey()

Method javax.jdo.identity.LongIdentity long getKey() Return the key. Returns: the key Since: JDO 1.0
JPA Doc
2

javax.persistence.Id

: @Id public Long getId() { return id; } Since: JPA 1.0 See Also: Column GeneratedValue Learn
JPA Doc
2

javax.persistence.LockModeType

.PESSIMISTIC_WRITE, and LockModeType.PESSIMISTIC_FORCE_INCREMENT are used to immediately obtain long
JPA Doc
2

javax.persistence.MapKeyJoinColumn

; ... } @Entity public class Movie { @Id long id; String title