java - AttributeOverrides 注释不会创建列的正确名称

Question

您好，我遇到了 Hibernate 和 @AttributeOverrides 注释的问题。

我有可嵌入的类(class)钱

@Embeddable
 public class Money implements Serializable {

     private BigDecimal denomination;

     private String currencyCode;

 }

实体 Loan 包含两个货币对象:Value 和 Interests

 @Entity
 public class Loan {

     @AttributeOverrides({
             @AttributeOverride(name = "valuedenomination", column = @Column(name = "valuedenomination")),
             @AttributeOverride(name = "valuecurrencycode", column = @Column(name = "valuecurrencycode")) })
     private Money value;

    @AttributeOverrides({
             @AttributeOverride(name = "interestdenomination", column = @Column(name = "interestdenomination")),
             @AttributeOverride(name = "interestcurrencycode", column = @Column(name = "interestcurrencycode")) })
     private Money interest;

 }

当我尝试打包应用程序时，出现以下原因异常:

引起:org.hibernate.MappingException:实体映射中的重复列:org.finance.app.core.domain.common.loan.Loan 列:currencyCode(应使用 insert="false"update="假”)

当我从数据库中的 Loam 中删除 One Money 实体时，我得到了两个字段:currencyCode 和 denomination 而不是我在 AttributeOverrides 中放入的 valuecurrencyCode 和 valuedenomination。

我是否错过了带有 AttributeOverrides 注释的内容？

Answer 1

AttributeOverride::name应该是嵌入类 Money 中的属性名称。所以你的映射应该是这样的:

 @Entity
 public class Loan {

     @AttributeOverrides({
             @AttributeOverride(name = "denomination", 
                                column = @Column(name = "valuedenomination")),
             @AttributeOverride(name = "currencyCode", 
                                column = @Column(name = "valuecurrencycode")) })
     private Money value;

    @AttributeOverrides({
             @AttributeOverride(name = "denomination", 
                                column = @Column(name = "interestdenomination")),
             @AttributeOverride(name = "currencyCode", 
                                column = @Column(name = "interestcurrencycode")) })
     private Money interest;

 }