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javax.persistence Annotation Type AssociationOverrides
Implements:
Annotation
@Target(value={TYPE, METHOD, FIELD})@Retention(value=RUNTIME)
此注释用于重写关系属性或字段的多个多对一或一对一映射。
示例: @MappedSuperclass public class Employee { @Id protected Integer id; @Version protected Integer version; @ManyToOne protected Address address; @OneToOne protected Locker locker; public Integer getId() { ... } public void setId(Integer id) { ... } public Address getAddress() { ... } public void setAddress(Address address) { ... } public Locker getLocker() { ... } public void setLocker(Locker locker) { ... } } @Entity @AssociationOverrides({ @AssociationOverride(name="address", joinColumns=@JoinColumn("ADDR_ID")), @AttributeOverride(name="locker", joinColumns=@JoinColumn("LCKR_ID"))}) public PartTimeEmployee { ... }
since |
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This annotation is used to override mappings of multiple many-to-one or one-to-one relationship properties or fields.
Example: @MappedSuperclass public class Employee { @Id protected Integer id; @Version protected Integer version; @ManyToOne protected Address address; @OneToOne protected Locker locker; public Integer getId() { ... } public void setId(Integer id) { ... } public Address getAddress() { ... } public void setAddress(Address address) { ... } public Locker getLocker() { ... } public void setLocker(Locker locker) { ... } } @Entity @AssociationOverrides({ @AssociationOverride(name="address", joinColumns=@JoinColumn("ADDR_ID")), @AttributeOverride(name="locker", joinColumns=@JoinColumn("LCKR_ID"))}) public PartTimeEmployee { ... }
- Since:
- Java Persistence 1.0
Required Element Summary | |
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AssociationOverride[] |
value
Mapping overrides of relationship properties or fields |
Element Detail |
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abstract public AssociationOverride[]
value()
关系属性或字段的映射重写
英文文档:
value
public abstract AssociationOverride[] value
- Mapping overrides of relationship properties or fields
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