我有两张桌子.. 资产表
ASSET_ID SYSIBM INTEGER 4 0否
USER_ID SYSIBM INTEGER 4 0否
ASSET_TYPE_ID SYSIBM SMALLINT 2 0否
ACCESSIBILITY_ID SYSIBM SMALLINT 2 0是
DOWNLOAD_TYPE_ID SYSIBM SMALLINT 2 0没有
ASSET_STATUS_ID SYSIBM SMALLINT 2 0没有
ASSET_MARKETING_ID SYSIBM SMALLINT 2 0是
ASSET_PI_SPI_ID SYSIBM SMALLINT 2 0是
和Accesibility表
ACCESSIBILITY_ID SYSIBM SMALLINT 2 0否
ACCESSIBILITY_DESC SYSIBM VARCHAR 50 0否
资产Bean
@Column(name="ASSET_ID")
@GeneratedValue(strategy=GenerationType.IDENTITY)
private int assetId;
@Column(name="DATE_CREATED")
private Timestamp dateCreated;
@Column(name="LAST_UPDATED")
private Timestamp lastUpdated;
@Column(name="DATE_PUBLISHED")
private Timestamp datePublished;
@Column(name="ASSET_SURVEY")
private Short assetSurvey;
@Column(name="ASSET_HELP")
private Short assetHelp;
@Column(name="ACCEPTED_TERMS")
private Short acceptedTerms;
@Column(name="ASSET_DESC")
@Lob
private String assetDesc;
@Column(name="ASSET_ALIAS")
private String assetAlias;
@Column(name="ASSET_TITLE")
private String assetTitle;
@Column(name="ASSET_SUMMARY")
private String assetSummary;
@Column(name="ASSET_URL")
private String assetUrl;
@Column(name="ASSET_ORIGINALITY")
private Short assetOriginality;
@Column(name="ASSET_INVENTION")
private Short invationDisclosure;
@Column(name="ASSET_PRIVACY")
private String privacyCompliance;
@ManyToOne
@JoinColumn(name="ASSET_PI_SPI_ID")
private AssetPiSpi assetPiSpiId;
@ManyToOne
@JoinColumn(name="ASSET_MARKETING_ID")
@ForeignKey
private AssetMarketing assetMarketingId;
@ManyToOne(cascade=CascadeType.REMOVE,fetch=FetchType.LAZY)
@JoinColumn(name="ACCESSIBILITY_ID")
@ForeignKey
private Accessibility accessibilityId;
@Column(name="ASSET_ID")
@GeneratedValue(strategy=GenerationType.IDENTITY)
private int assetId;
@Column(name="DATE_CREATED")
private Timestamp dateCreated;
@Column(name="LAST_UPDATED")
private Timestamp lastUpdated;
@Column(name="DATE_PUBLISHED")
private Timestamp datePublished;
@Column(name="ASSET_SURVEY")
private Short assetSurvey;
@Column(name="ASSET_HELP")
private Short assetHelp;
@Column(name="ACCEPTED_TERMS")
private Short acceptedTerms;
@Column(name="ASSET_DESC")
@Lob
private String assetDesc;
@Column(name="ASSET_ALIAS")
private String assetAlias;
@Column(name="ASSET_TITLE")
private String assetTitle;
@Column(name="ASSET_SUMMARY")
private String assetSummary;
@Column(name="ASSET_URL")
private String assetUrl;
@Column(name="ASSET_ORIGINALITY")
private Short assetOriginality;
@Column(name="ASSET_INVENTION")
private Short invationDisclosure;
@Column(name="ASSET_PRIVACY")
private String privacyCompliance;
@ManyToOne
@JoinColumn(name="ASSET_PI_SPI_ID")
private AssetPiSpi assetPiSpiId;
@ManyToOne
@JoinColumn(name="ASSET_MARKETING_ID")
@ForeignKey
private AssetMarketing assetMarketingId;
@ManyToOne(cascade=CascadeType.REMOVE,fetch=FetchType.LAZY)
@JoinColumn(name="ACCESSIBILITY_ID")
@ForeignKey
private Accessibility accessibilityId;
和辅助功能
在我的ManagerBean中调用EntitiManager.flush()时
@Column(name="ACCESSIBILITY_ID")
private short accessibilityId;
@Column(name="ACCESSIBILITY_DESC")
private String accessibilityDesc;
@OneToMany(mappedBy="accessibilityId",cascade=CascadeType.REMOVE,fetch=FetchType.LAZY)
private Set<Asset> assetCollection;
我正在
javax.ejb.EJBException:请参阅嵌套异常;嵌套异常是:org.apache.openjpa.persistence.InvalidStateException:在生命周期状态下遇到非托管对象“com.ibm.tap.ejb.dao.entity.Accessibility@169e3455”,而在通过字段“com.ibm.tap”级联持久性时不受管理.ejb.dao.entity.Asset.accessibilityId“在冲洗期间。但是,此字段不允许级联持续存在。您无法刷新与非托管对象具有持久关联的非托管对象或图形。建议的操作:a)将此字段的cascade属性设置为CascadeType.PERSIST或CascadeType.ALL(JPA注释)或“persist”或“all”(JPA orm.xml),b)全局启用cascade-persist,c)手动在冲洗之前保持相关的字段值。 d)如果引用属于另一个上下文,则允许通过设置StoreContext.setAllowReferenceToSiblingContext()来引用它。 FailedObject:com.ibm.tap.ejb.dao.entity.Accessibility@169e3455
我尝试将Asset类更改为
em.persist(asset);
em.flush();
当我这样做时,我得到了 javax.ejb.EJBException:参见嵌套异常;嵌套异常是:org.apache.openjpa.persistence.EntityExistsException:在此上下文中已存在具有oid“1”的“com.ibm.tap.ejb.dao.entity.Accessibility”类型的对象;另一个不能坚持下去。 FailedObject:com.ibm.tap.ejb.dao.entity.Accessibility@166c27b9
对我而言,我正试图坚持我已经拥有的桌子。我究竟做错了什么?
答案 0 :(得分:5)
您遇到的问题不是由外键引起的。发生的事情是您的Asset对象包含一个不受OpenJPA管理的Accessibility对象。如何解决这个问题取决于辅助功能记录的状态:
数据库中是否已存在辅助功能记录?如果是这样,首先使用getEntityManager.find(Accessibility.class,uid)加载它,然后在尝试保留Asset对象之前将其设置到Asset对象上。
如果尚未保留辅助功能记录,则需要先使用“getEntityManager.persist(accessibility)”将其保留,然后在尝试保留之前将其设置到Asset对象上。或者,您的另一个选择是更改辅助功能集合的级联类型以允许持久化,如下所示:
@ManyToOne(cascade=cascade={ CascadeType.PERSIST, CascadeType.REMOVE },fetch=FetchType.LAZY) @JoinColumn(name="ACCESSIBILITY_ID") @ForeignKey private Accessibility accessibilityId;
如果进行cacade更改,则在保留Asset对象时,Asset对象上的任何未加载的Accessibility对象都将自动保留。