18 | Optimistic locking: prevent version increment on entity collection attribute I seem to have some issues. I have changed my classes to have a OneTomany mappedBy relationship as ... ; @OneToMany(mappedBy="document") private ArrayList<Reading> readings = new ArrayList ... { private static long ID_SEQ = 0; @Id private long id = ID_SEQ++; @OneToMany(mappedBy |
18 | Why are my Map entries not stored? id; @OneToMany(fetch = FetchType.EAGER, cascade=CascadeType.ALL, mappedBy = "ticket ... ) private Map states = new HashMap(); Is this correct now? "mappedBy" is not required? But I have to set "@MapKey"? Or is this optional? itsme Martin Petzold You have 2 options: Not using @MappedBy: In |
16 | Bidirectional OneToMany is slow on updated items = {CascadeType.ALL}, fetch = FetchType.LAZY/*, mappedBy = "person"*/) private Set<Address> addressSet = new ... for the reply. This looks great. But without the mappedby, there are to independent relations ... to change the code. Instead set a property to force objectdb to handle all mappedby as ordinary |
16 | Detaching objects after JOIN FETCH: 1. When not using mappedBy, like in example above, detached objects are visible even after closing em. 2. When using mappedBy in class B (this is the case in my code), detached objects from relation are not visible. I should add mappedBy in the example above, but I totally forget |
16 | Version 2.2.7 build 7/8 issueHi all, I have problems with builds 7 and 8 when trying to sort entities with mappedBy ... with null objects! With builds 6 and 5 works it correctly. Removing mappedBy from @OneToOne(mappedBy ... ; @OneToOne(mappedBy = "address") private Customer customer; public Customer |
14 | Error: Failed to write value of field X using reflection (oneToMany relation) coche } @Entity public class Cliente extends Persona{ @OneToMany(mappedBy="Pedido ... case file is adjunct. elnll002 Facundo Curti You have to change the value of the mappedBy attribute: @OneToMany(mappedBy="cliente") i.e. specify the field name on the owner side without the class name. support Support |
11 | joining of tables() { return address; } in Address class: @ManyToMany(mappedBy = "address") public Set ... also add a reference back from Address to Employee with a mappedBy setting. You can use |
11 | Problem persisting a TreeSet field relationship: @ManyToOne private Message parent; @OneToMany(mappedBy = "parent") private TreeSet ... field instead of as an inverse field - remove he mappedBy setting, and update the TreeSet explicitly |
11 | Missing (null) elements in eager loaded references extends BaseCostElement { @OneToMany(mappedBy = "parent", fetch = FetchType.EAGER) private List ... class DataElement extends BaseCostElement { @OneToMany(mappedBy = "parent", fetch = FetchType |
2 | NullPointer when accessing persistent field.ALL, mappedBy="z_component") @MapKey(name="z_schemeName") private java.util.Map<java.lang.String ... public static class A { @OneToMany(targetEntity = B.class, mappedBy = "a") private ... was being accessed. @OneToMany(cascade=CascadeType.ALL, mappedBy="z_aqera") @MapKey(name="z_registerId |
