About ManyToOne

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2

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

(Assignement.PK.class) public class Assignement {     @Id @ManyToOne(cascade = CascadeType.ALL, optional = false)     private User user;         @Id @ManyToOne(cascade = CascadeType.ALL, optional
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OneToMany and cascade delete problem

{ @ManyToOne private Product product; @ManyToOne private Store store; } Naming
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Optimistic locking: prevent version increment on entity collection attribute

call to make sure the reading will be done from the DB but no success. I have tried to add ManyToOne ... to add ManyToOne of the owning side (Readings), This should not make any difference. > added EAGER
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"Problem" with cross join

=InheritanceType.JOINED) ... @ManyToOne private CI ci; subclass CIstring private String text; I
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@Column( name = "columnName") doesn't work

I have created following entity class with custom fields @Entity public class AfwDataKey { @Id @GeneratedValue @Column(name = "KEY_ID") private long id; private Long timestamp; @ManyToOne @Column(name = "KEY_DESCRIPTOR") private AfwKeyDescriptor keyDescriptor
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@OneToMany(fetch = FetchType.LAZY) list is always null

; @ManyToOne private Parent parent; public int getId() { return id
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_PersistenceException: Type is not found on getSingleResult.

;     @ManyToOne     private Municipio lugarNacimiento;         @OneToMany(mappedBy = "estudiante
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Adding EntityListener Throws Unexpected Internal Exception

() {         super(Product.class);     }     @MapsId     @ManyToOne(fetch = FetchType.LAZY
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An ArrayIndexOutOfBoundsException with nested entities and enhanced entities

{ @ManyToOne (targetEntity = DataTypeImpl.class, cascade = {CascadeType.ALL }, fetch
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Are indexes implicitly created for relationships?

Do the following annotations @OneToMany @ManyToOne @ManyToMany @OneToOne imply @Index  ? Thanks, Carl   Actually these annotations (except @ManyToMany) should apply @Unique on the @One side. But ObjectDB doesn't apply these indexes automatically, because of their overhead (which most users are not