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EclipseLink 1.1.0_ 1.1.0.r3634 API Reference | |||||||||
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@Target(value={METHOD,FIELD})
@Retention(value=RUNTIME)
public @interface ManyToOneThis 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.
Example:
@ManyToOne(optional=false)
@JoinColumn(name="CUST_ID", nullable=false, updatable=false)
public Customer getCustomer() { return customer; }
| Optional Element Summary | |
|---|---|
CascadeType[] |
cascade
(Optional) The operations that must be cascaded to the target of the association. |
FetchType |
fetch
(Optional) Whether the association should be lazily loaded or must be eagerly fetched. |
boolean |
optional
(Optional) Whether the association is optional. |
java.lang.Class |
targetEntity
(Optional) The entity class that is the target of the association. |
public abstract java.lang.Class targetEntity
Defaults to the type of the field or property that stores the association.
public abstract CascadeType[] cascade
By default no operations are cascaded.
public abstract FetchType fetch
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.
public abstract boolean optional
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EclipseLink 1.1.0_ 1.1.0.r3634 API Reference | |||||||||
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