com.easycodebox.common.jpa

注释类型 ManyToOne

@Target(value={METHOD,FIELD})
 @Retention(value=RUNTIME)
public @interface 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.

     Example:

     @ManyToOne
     @JoinColumn(name="CUST_ID", nullable=false, updatable=false)
     public Customer getCustomer() { return customer; }
 

从以下版本开始:

Java Persistence 1.0

可选元素概要

可选元素

限定符和类型	可选元素和说明
FetchType	fetch 此功能暂未实现
Class	targetEntity (Optional) The entity class that is the target of the association.

元素详细资料

targetEntity

public abstract Class targetEntity

(Optional) The entity class that is the target of the association.

Defaults to the type of the field or property that stores the association.

默认值:

void.class

fetch

public abstract FetchType fetch

此功能暂未实现

默认值:

com.easycodebox.common.jpa.FetchType.LAZY