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Issue
16

JPQL support for mapped by (inverse) collections

As discussed and demonstrated in this forum thread, collection operators and methods (IS EMPTY, SIZE, MEMBER OF, IN) are currently not supported for mapped by (inverse) collections. These operations are supported for direct (not mapped by) collections. Navigation and JOIN is supported
Forum
16

LEFT JOIN FETCH over empty embedded collection returns no results

to my inquiry a few months ago. However, I have run into one problem: if an embedded collection is empty, but I attempt to LEFT JOIN FETCH all the members of a collection within a (non-existent) member of the first collection, the result of the overall query is an empty set. To use the example from
JPA Doc
16

javax.persistence.criteria.CollectionJoin

>, FetchParent, From, Join, Path, PluralJoinCollection,E>, Selection, TupleElement The CollectionJoin interface is the type of the result of joining to a collection over an association or element collection that has been specified as a java.util.Collection. Since: JPA 2.0 Selection
JPA Doc
16

javax.persistence.criteria.CriteriaBuilder

Predicate isEmpty( Expression collection) Create a predicate that tests whether a collection is empty. Create a predicate that tests whether a collection is empty. Parameters: collection - expression ... - expression to be tested Returns: predicate Since: JPA 2.0 Predicate isMember(E elem, Expression collection
Forum
15

Composite index support collection

Hello, is there any chance that you support composite indices with fields and collections combined in the future? We need such feature in our application and would be very happy to see it in ... of one collection). Hello, yes, one collection would be fine for our use cases. Do you have any concrete
Forum
15

Eager Fetch is not stable for collection or map types?

Hi, thanks very much for your helpful software. The problem is the storage of collection or map ... is we confirm that the collection or map are stored successfully by using explorer tools when the JVM stopped ... () of collection or map before closing the EntityManager, data can be retrieved successfully:    public
Forum
15

Navigation to Collection Elements

Greetings ObjectDB team, Suppose I have a collection typed field (list/map/set...) in my persistent ... handling such expressions. Indexes are supported in handling more conventional collection expressions (by ... queries, and anyway, collections are preferred over arrays when using JPA/JDO (and they might be even more efficient). geekox86
Issue
15

Remove of an entry from a @OneToMany collection is not possible if the enhancer is disabled

Hello! When the JPA entities are not enhanced the removal of an entry from a @OneToMany collection ... . It represents an issue with non enhanced classes, but it is not related to @OneToMany collection. Any change ... .0_04. The problem with the @OneToMany collection is still not fixed. You are right, sorry
Forum
15

Search through collection for value using index

I have an entity that contains a java collection of a Long id of user entities that can modify ... could do something besides a java collection if there is a better approach. You can define an index on a collection field as explained in the manual, and the index will be used automatically by queries
JPA Doc
15

javax.persistence.criteria.ListJoin

interface is the type of the result of joining to a collection over an association or element collection that has been specified as a java.util.List. Since: JPA 2.0 Selection alias(String name ... ) Create a fetch join to the specified collection-valued attribute using an inner join. Create a fetch