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26

NULL prefered in ORDER BY?

Hi! Is there a way to NOT prefer NULL in Order BY? I.e. assume this: @Entity class Hint {     private String name; } @Entity class Test {     private Hint hint; } I've got a few Test entries, some do have a hint assigned, some do not (NULL). Now when I do something like SELECT FROM
5

javax.persistence.FetchType

on the persistence provider runtime that data must be eagerly fetched. The LAZY strategy is a hint ... . The implementation is permitted to eagerly fetch data for which the LAZY strategy hint has been specified. Example
4

queries under 2.7.6_4 significantly slower than under 2.7.6

a workaround you can use a query hint to request a specific preferred query as discussed in issue #2379. However, during the work on this issue it was found that the new query plan hint feature ... a hint) to use a query plan with a specific index. It should be executed much faster
4

queries more than 10 times slower using 2.8.1 versus 2.7.6

Support the query hint does not help, measures: version 2.8.1 query: select distinct o from ObjectNode o ... , how can we proceed ? hgzwicker Hans-Georg Zwicker As explained in answer #9 the hint ... post #6 that we haven't analysed, and therefore cannot suggest the particular recommended hint
4

ManyToOne.fetch

is a hint to the persistence provider runtime. Default value: javax.persistence.FetchType.EAGER Since: JPA 1.0
4

javax.persistence.ElementCollection

must be eagerly fetched. The LAZY strategy is a hint to the persistence provider runtime. Default value
4

OneToMany.fetch

is a hint to the persistence provider runtime. Default value: javax.persistence.FetchType.LAZY Since: JPA 1.0
4

Basic.optional

Annotation Element javax.persistence.Basic boolean optional (Optional) Defines whether the value of the field or property may be null. This is a hint and is disregarded for primitive types; it may be used in schema generation. If not specified, defaults to true. Default value: true Since: JPA 1.0
0

javax.jdo.datastore.Sequence

. Since: JDO 2.0 void allocate(int additional) Provides a hint to the implementation that the application will need additional sequence value objects in short order. Provides a hint
0

evict(pc)

Method javax.jdo.PersistenceManager void evict( Object pc ) Mark an instance as no longer needed in the cache. Eviction is normally done automatically by the PersistenceManager at transaction completion. This method allows the application to explicitly provide a hint to the PersistenceManager

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