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About mappedBy

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Forum
23

LEFT (OUTER) JOIN problem when mappedBy is defined

invoices without items! Only invoices with items. When I remove mappedBy from @OneToMany annotation, LEFT ... (); } } @Entity public class Invoice { @OneToMany(mappedBy = "invoice", fetch= FetchType.EAGER
Forum
23

mappedBy problem

If I put the mappedBy element to the @OneToMany, the owned side (the many side) will never persist ! for example @Entity public class Employee { @Id @GeneratedValue(strategy = GenerationType ... ,mappedBy="employee") public List
addresses; } @Entity public class Address
JPA Doc
12

javax.persistence.ManyToMany

side. If the relationship is bidirectional, the non-owning side must use the mappedBy element of the ManyToMany ... is the owner of the relationship, the non-owning side must use the mappedBy element of the ManyToMany ... (".") notation syntax must be used in the mappedBy element to indicate the relationship attribute
JPA Doc
11

javax.persistence.OneToOne

. If the relationship is bidirectional, the non-owning side must use the mappedBy element of the OneToOne annotation ... is on the owning side of the relationship, the non-owning side must use the mappedBy element of the OneToOne ... syntax must be used in the mappedBy element to indicate the relationship attribute
JPA Doc
10

javax.persistence.OneToMany

; otherwise the target entity class must be specified. If the relationship is bidirectional, the mappedBy element ... , the mappedBy element must be used to specify the relationship field or property of the entity ... // In Customer class: @OneToMany(cascade=ALL, mappedBy="customer") public Set
JPA Doc
9

javax.persistence.ManyToOne

side must used the mappedBy element to specify the relationship field or property of the entity ... is bidirectional, the non-owning OneToMany entity side must use the mappedBy element of the OneToMany ... side of the relationship. The dot (".") notation syntax must be used in the mappedBy element
JPA Doc
6

javax.persistence.MapKey

. Example 1: @Entity public class Department { ... @OneToMany(mappedBy ... { ... @OneToMany(mappedBy="department") @MapKey(name="name") public
Forum
6

EntityManager.refresh takes a long time

itself with a cascade refresh: @OneToMany(mappedBy = "person", cascade = CascadeType.ALL) private List openIdAuths = new ArrayList<>(); @OneToMany(mappedBy = "person", cascade = CascadeType ... <>(); @ManyToMany(mappedBy = "selectedPersons", cascade = CascadeType.REFRESH) @NotNull
JDO Doc
4

javax.jdo.annotations.Element

) should be indexed. Default value: "" Since: JDO 2.1 String mappedBy Name of the member in the target class
JDO Doc
4

javax.jdo.annotations.Key

.1 String mappedBy Name of a member in the value class where this key is stored. Name of a member in