java - 列需要由 2 个嵌入式类型共享，但导致 "Repeated column in mapping for entity"

Question

不知道有没有人可以给我一些设计方面的建议？我遇到如下问题: org.hibernate.MappingException: 实体映射中的重复列，我知道这是因为我对 2 个嵌入式 setter/getter 使用了相同的列(“uom”)。但是，根据定义，重复的列由其他两列共享。谁能建议如何使用 JPA 注释进行设计？

public class FinalProfile extends BlockSegment implements Serializable, DeepCopy {
    private static final long serialVersionUID = 1L;

    ...
    private Measurement thresholdElevation;
    ...
    private Measurement thresholdCrossingHeight;




    public Measurement getThresholdCrossingHeight() {
        return thresholdCrossingHeight;
    }

    public void setThresholdCrossingHeight(Measurement thresholdCrossingHeight) {
        this.thresholdCrossingHeight = thresholdCrossingHeight;
    }

    public Measurement getThresholdElevation() {
        return thresholdElevation;
    }

    public void setThresholdElevation(Measurement thresholdElevation) {
        this.thresholdElevation = thresholdElevation;
    }

    ...
}


@Entity
@EntityListeners( { AuditEntityListener.class, HasFlightProcedureIdEntityListener.class, HasAlpExpansionEntityListener.class } )
@Table ( name = "FINAL_PROFILE" )
@DiscriminatorValue ( "1" )
public class FinalProfileDo extends BlockSegmentDo 
        implements Audited, HasFlightProcedureId, HasAlpExpansionData {
    private static final long serialVersionUID = 1L;
    public static final Long BlockSegmentId = 1L;

    private FinalProfile finalProfile;
    ...


        @Embedded
    @AttributeOverrides ( { 
        @AttributeOverride ( name = "value", column = @Column ( name = "THLD_CROSS_HEIGHT" ) )
        , @AttributeOverride ( name = "uom", column = @Column ( name = "TCH_UOM" ) )
    } )
    public MeasurementDo getThresholdCrossingHeight() {
        return (MeasurementDo)this.finalProfile.getThresholdCrossingHeight();
    }

    @DeepCopyType ( MeasurementDo.class )
    public void setThresholdCrossingHeight(Measurement thresholdCrossingHeight) {
        this.finalProfile.setThresholdCrossingHeight(thresholdCrossingHeight);
    }

        @Embedded
    @AttributeOverrides({
        @AttributeOverride( name ="value", column = @Column (name = "THLD_ELEVATION") ) 
        , @AttributeOverride ( name = "uom", column = @Column ( name = "TCH_UOM"))
    })
    public MeasurementDo getThresholdElevation() {
        return (MeasurementDo)this.finalProfile.getThresholdElevation();
    }

    @DeepCopyType ( MeasurementDo.class )
    public void setThresholdElevation(MeasurementDo thresholdElevation) {
        this.finalProfile.setThresholdElevation(thresholdElevation);
    }

Answer 1

问题可能出在 name = "uom", column = @Column (name = "TCH_UOM") 行中，@Embedded 属性在实体中创建列表中，您尝试在同一个表中创建两个具有相同名称的列。