About collection

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Forum
26

Delete object from collection versus delete from JPQL

objects? There are cases where the JPQL syntax is more expressive than operating on a collection
Issue
26

delete of a collection in explorer changes type

accidently we used the option delete on a collection of type ArrayList. On doing so the type changed to List. we are using explorer version 2.7.1_02 How can we change that back again ? Is it only an issue with the type of the field as shown by the Explorer or
Forum
26

How to Persist a Map of beans to collections of beans?

persistence capable classes). Support of map values which are collections is non standard and may be limited
Issue
26

Internal exception: NPE on criteria query with IN clause and empty collection

already narrowed the cause to the fact that I use JPA criteria query API, and I pass an empty collection to IN
Forum
26

Is there a way to set EAGER fetch on all "ToMany" collection relationships

Given that the default seems to be FetchType.LAZY for all collections @OneToMany and @ManyToMany. Such as a configuration option. Instead of having to explicitly set fetch in annotation code in every relationship. No. There is no such configuration option, since having EAGER as the fetch type
Issue
26

New Java 8 (JDK 1.8) Collection Methods

ObjectDB version 2.5.5 (and above) supports Java 8 (JDK 1.8). Tracking changes to collections and maps using some new Java 8 methods is currently not fully supported. The main known issue is that orphan removal does not happen as a result of removing a reference to an object
Forum
26

NontransactionalWrite error using Collections.sort .

Hi, i started to use ObjectDB today and i'm having problem using command Collections.sort in persisted object.  Attempt to modify an object with no active transaction when NontransactionalWrite is disabled: br.ufpa.linc.MetriX.api.model.Interface#105 (error 635)   I don't want to modifi de object
Issue
25

After using the enhancer, Lazy loaded collections are no longer loading. They are set as null

After using the enhancer, Lazy loaded collections are no longer loading. They are set as null
Forum
25

how to persist an object twice into two diff. collections of two diff. classes

how to persist an object twice into two diff. collections of two diff. classes
Forum
25

Persisting collection where members are subclasses

Persisting collection where members are subclasses