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javax.persistence.MapKey

Annotation MapKey MapKeyClass annotation is not used when MapKeyMapKey

MapKey.name

Annotation Element MapKey" title="Annotation in javax.persistence">javax.persistence.MapKeyString name

JPA Entity Fields

specifying a selected key field using the MapKey">MapKey annotation:MapKey">@MapKey(MapKey/name">name="name") Map<

JPA Annotations for Relationships

="OrderBy|MapKey"> Details about all these annotations are provided

Why are my Map entries not stored?

.ALL, orphanRemoval=true) @MapKey(name="state") @MapKeyEnumerated(EnumType.STRING) private Map states = new HashMap(); Is this correct now? "mappedBy" is not required? But I have to set "@MapKey ... also without specifying @MapKey, etc.). Using @MappedBy:

Is it possible to remove parent/child entities without refresh?

javax.persistence.ManyToOne; import javax.persistence.MapKey; import javax.persistence.OneToMany ... = true)   @MapKey(name = "childName")   private Map<String, ChildEntity> children

Merge with Parent/Child entities not possible

.Id; import javax.persistence.ManyToOne; import javax.persistence.MapKey; import javax.persistence ... = CascadeType.ALL, mappedBy = "parent", orphanRemoval = true)   @MapKey(name = "childName")  

Object explorer cannot open odb file. ObjectDB many-to-many relationship

= "user") @MapKey     private Map<Assignement.PK, Assignement> assignements ... ;         @OneToMany(mappedBy = "project") @MapKey    

javax.persistence.MapKeyClass

>ManyToMany). The MapKey annotation is not used when MapKeyClass

NullPointer when accessing persistent field

class="pre-java"> @OneToMany(cascade=CascadeType.ALL, mappedBy="z_component") @MapKey(name="z ... (cascade=CascadeType.ALL, mappedBy="z_aqera") @MapKey(name="z_registerId")     private