我有以下两个类:Claim
(父)和ClaimInsurance
(子)。它们如下:
public class Claim {
private SortedSet<ClaimInsurance> claimInsurances = new TreeSet<ClaimInsurance>();
@OneToMany(cascade=CascadeType.ALL, fetch=FetchType.LAZY, mappedBy="claim", orphanRemoval=true)
@Sort(type=SortType.NATURAL)
public SortedSet<ClaimInsurance> getClaimInsurances() {
return this.claimInsurances;
}
public void setClaimInsurances(SortedSet<ClaimInsurance> claimInsurances) {
this.claimInsurances = claimInsurances;
}
}
和
public class ClaimInsurance implements java.io.Serializable, Comparable<ClaimInsurance> {
private Claim claim;
@ManyToOne(fetch=FetchType.LAZY)
@JoinColumn(name="ClaimId", nullable=false)
public Claim getClaim() {
return this.claim;
}
public void setClaim(Claim claim) {
this.claim = claim;
}
}
当我尝试删除Claim
时,它会提供以下异常
org.hibernate.exception.ConstraintViolationException: could not delete: [com.omnimd.pms.beans.Claim#201]
...
Caused by: com.microsoft.sqlserver.jdbc.SQLServerException: The DELETE statement conflicted with the REFERENCE constraint "FK_RCMSClaimInsuranceTable_RCMSClaimTable". The conflict occurred in database "Omnimdv12", table "dbo.RCMSClaimInsuranceTable", column 'ClaimId'.
当我更改claimInsurances
类中的Claim
映射时,如下所示,一切正常:
private Set<ClaimInsurance> claimInsurances = new HashSet<ClaimInsurance>();
@OneToMany(cascade=CascadeType.ALL, fetch=FetchType.LAZY, mappedBy="claim", orphanRemoval=true)
public Set<ClaimInsurance> getClaimInsurances() {
return this.claimInsurances;
}
public void setClaimInsurances(Set<ClaimInsurance> claimInsurances) {
this.claimInsurances = claimInsurances;
}
似乎问题出现在我使用Set
(HashSet
)的映射中,但是如果我使用SortedSet
(TreeSet
),它会给出一个问题错误。
实际问题可能是什么?我错过了什么?
答案 0 :(得分:0)
行。问题现在解决了。在@JB Nizet的帮助下
对于同一个Claim
我有几个ClaimInsurance
compareTo()
给出相同的结果。
我更改了compareTo()
中的ClaimInsurance
,以便它会为同一个Claim
返回不同的值..就是这样,它现在正在工作。