我的两个豆子中有以下映射
父Bean
@OneToMany(fetch = FetchType.LAZY, mappedBy = "application")
@Cascade({CascadeType.SAVE_UPDATE, CascadeType.DELETE})
@JsonIgnore
private Set<ApplicationBuildVO> applicationBuilds = new HashSet<ApplicationBuildVO>(0);
Child Bean
@ManyToOne(fetch = FetchType.LAZY)
@Cascade({CascadeType.SAVE_UPDATE})
@JoinColumn(name = "APPLICATION_ID", nullable = false)
@JsonIgnore
private ApplicationVO application;
在我的服务方法中 - 我在Application bean上执行find 创建子应用程序bean - 它具有对父应用程序的引用
然后 - 当我尝试在同一服务方法中更新Parent bean的值时,我收到以下错误
Caused by: org.hibernate.NonUniqueObjectException: A different object with the same identifier value was already associated with the session : [com.domain.dao.ApplicationVO#1]
at org.hibernate.engine.internal.StatefulPersistenceContext.checkUniqueness(StatefulPersistenceContext.java:617)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.performUpdate(DefaultSaveOrUpdateEventListener.java:301)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.entityIsDetached(DefaultSaveOrUpdateEventListener.java:244)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:109)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:90)
我的服务代码(剥离)如下
public boolean performBuild(Integer applicationId) {
ApplicationVO applicationVO = applicationServices.findAnyApplicationId(applicationId);
ApplicationBuildVO androidApplicationBuildVO = new ApplicationBuildVO();
androidApplicationBuildVO.setIsAndroid(true);
androidApplicationBuildVO.setIsSuccess(appBuildSuccessful);
androidApplicationBuildVO.setApplication(applicationVO);
androidApplicationBuildVO.setSoftwareVersion(androidSoftwareVersionVO);
androidApplicationBuildVO.setS3BucketName(mobileAppsBucketName);
androidApplicationBuildVO.setS3ArtifactKey(androidArtifact);
Integer applicationBuildId = applicationBuildServices.saveApplicationBuild(androidApplicationBuildVO);
applicationVO.setIsCurrentlyBeingBuilt(false);
boolean updateApplicationResult = applicationServices.updateApplication(applicationVO);
}
我有什么想法可以解决这个问题?
答案 0 :(得分:1)
我认为您的问题是由您首先保存androidApplicationBuildVO
孩子的事实造成的,之后您保存了父级applicationVO
,您可以将子级添加到父级并保存父级,如下所示: / p>
boolean performBuild(Integer applicationId) {
ApplicationVO applicationVO = applicationServices.findAnyApplicationId(applicationId);
ApplicationBuildVO androidApplicationBuildVO = new ApplicationBuildVO();
androidApplicationBuildVO.setIsAndroid(true);
androidApplicationBuildVO.setIsSuccess(appBuildSuccessful);
androidApplicationBuildVO.setApplication(applicationVO);
androidApplicationBuildVO.setSoftwareVersion(androidSoftwareVersionVO);
androidApplicationBuildVO.setS3BucketName(mobileAppsBucketName);
androidApplicationBuildVO.setS3ArtifactKey(androidArtifact);
applicationVO.addBuild(androidApplicationBuildVO);
applicationVO.setIsCurrentlyBeingBuilt(false);
boolean updateApplicationResult = applicationServices.updateApplication(applicationVO);
}
如果applicationVO
public void addBuild(ApplicationBuildVO buildVo) {
applicationBuilds.add(buildVo);
}
谨防ApplicationBuildVO中的equals
和hashcode
实现不基于id,以便在添加未保存的元素applicationBuilds
Set时不会产生惊喜。