javax.persistence: public class: ManyToOne

javax.persistence
public class: ManyToOne [javadoc | source]

javax.persistence.ManyToOne

This annotation defines a single-valued association to another entity class that has many-to-one multiplicity. It is not normally necessary to specify the target entity explicitly since it can usually be inferred from the type of the object being referenced.

author: Emmanuel - Bernard

Method from javax.persistence.ManyToOne Summary:
cascade, fetch, optional, targetEntity

Method from javax.persistence.ManyToOne Detail:
CascadeType[] cascade() { } The operations that must be cascaded to the target of the association. By default no operations are cascaded.
FetchType fetch() { } Whether the association should be lazily loaded or must be eagerly fetched. The EAGER strategy is a requirement on the persistence provider runtime that the associated entity must be eagerly fetched. The LAZY strategy is a hint to the persistence provider runtime.
boolean optional() { } Whether the association is optional. If set to false then a non-null relationship must always exist.
Class targetEntity() { } The entity class that is the target of the association. Defaults to the type of the field or property that stores the association

Method from javax.persistence.ManyToOne Detail:

 CascadeType[] cascade() {

}

The operations that must be cascaded to the target of the association. By default no operations are cascaded.

 FetchType fetch() {

}

Whether the association should be lazily loaded or must be eagerly fetched. The EAGER strategy is a requirement on the persistence provider runtime that the associated entity must be eagerly fetched. The LAZY strategy is a hint to the persistence provider runtime.

 boolean optional() {

}

Whether the association is optional. If set to false then a non-null relationship must always exist.

 Class targetEntity() {

}

The entity class that is the target of the association. Defaults to the type of the field or property that stores the association