難以使用Envers來審計多對多關係

我想要使用Envers來審計與嵌入式組件的多對多關係，但我遇到了MappingException的問題，說ComponentType是不支持。這是堆棧跟蹤的相關部分：難以使用Envers來審計多對多關係

Caused by: org.hibernate.MappingException: Type not supported: org.hibernate.type.ComponentType 
     at org.hibernate.envers.configuration.metadata.IdMetadataGenerator.addIdProperties(IdMetadataGenerator.java:74) 
     at org.hibernate.envers.configuration.metadata.IdMetadataGenerator.addId(IdMetadataGenerator.java:105) 
     at org.hibernate.envers.configuration.metadata.AuditMetadataGenerator.generateFirstPass(AuditMetadataGenerator.java:413) 
     at org.hibernate.envers.configuration.EntitiesConfigurator.configure(EntitiesConfigurator.java:101) 
     at org.hibernate.envers.configuration.AuditConfiguration.<init>(AuditConfiguration.java:103) 
     at org.hibernate.envers.configuration.AuditConfiguration.getFor(AuditConfiguration.java:135) 
     at org.hibernate.envers.event.EnversIntegrator.integrate(EnversIntegrator.java:63) 
     at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:295) 
     at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1737) 
     at org.hibernate.ejb.EntityManagerFactoryImpl.<init>(EntityManagerFactoryImpl.java:76) 
     at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:905)

讀Envers參考，似乎Envers可以處理我想要做的事。據參考：

如果你想覆蓋從@MappedSuperclass或嵌入式組件繼承了某些字段/屬性的審計行爲，可以適用於亞型或使用該@AuditOverride（S）註釋組件的位置。

這是我的關聯實體。您可以在類級別上看到我嘗試使用@AuditOverride的位置，以防止審覈嵌入的組件。我也嘗試在字段本身上使用註釋。兩者都沒有改變。

@Audited 
// @AuditOverride(name = "pk", isAudited = false) <===== Didn't help 
@Table(name = "user_role") 
@javax.persistence.Entity 
@AssociationOverrides 
(
    { 
    @AssociationOverride 
     (name = "pk.user", joinColumns = @JoinColumn(name = "id")), 
    @AssociationOverride 
     (name = "pk.role", joinColumns = @JoinColumn(name = "id")) 
    } 
) 
public class UserRole extends Entity<UserRole> 
{ 
    private static final long serialVersionUID = 1L; 

    private Date expirationDate; 
    private UserRolePk pk = new UserRolePk(); 

    public UserRole() {} 

    // @AuditOverride(name = "pk", isAudited = false) <== Didn't help 
    @EmbeddedId 
    public UserRolePk getPk() { return pk; } 

    @Transient 
    public User getUser() { return getPk().getUser(); } 

    @Transient 
    public Role getRole() { return getPk().getRole(); } 
... 
}

這裏的用戶實體：

@Audited 
@Table(name = "applicationuser") 
@javax.persistence.Entity 
public class User extends Entity<User> 
{ 
    private static final long serialVersionUID = 1L; 
    private String firstName; 
    private String lastName; 
    private String email; 
    private Set<UserRole> userRoles = new HashSet<UserRole>(0); 

    @OneToMany(fetch = FetchType.LAZY, cascade=CascadeType.ALL, 
     mappedBy = "pk.user", orphanRemoval = true) 

    public Set<UserRole> getUserRoles() { return userRoles; } 
... 
}

這裏的角色實體：

@Audited 
@Table(name = "role") 
@javax.persistence.Entity 
public class Role extends Entity<Role> 
{ 
    private static final long serialVersionUID = 1L; 
    private String name; 
    private String label; 
    private Set<UserRole> userRoles = new HashSet<UserRole>(0); 

    @OneToMany(fetch = FetchType.LAZY, mappedBy = "pk.role", 
     cascade=CascadeType.ALL, orphanRemoval = true) 

    public Set<UserRole> getUserRoles() { return userRoles; } 
... 
}

這裏的嵌入式組件：

@Embeddable 
public class UserRolePk implements Serializable 
{ 
    private static final long serialVersionUID = 1L; 

    private User user; 
    private Role role; 

    @ManyToOne 
    public User getUser() { return user; } 

    @ManyToOne 
    public Role getRole() { return role; } 
... 
}

最後，這裏是我的基地實體，爲了完整性：

@MappedSuperclass() 
public abstract class Entity<X extends Entity<X>> 
    implements Comparable<X>, Serializable 
{ 
    private static final long serialVersionUID = 1L; 
    private Long id; 
    private Timestamp timestamp; 
... 
}

我讀過的Envers參考，並仔細閱讀論壇，但信息似乎很稀疏。任何想法或指針？

來源

2012-02-02 Patrick Garner

我通過丟棄可嵌入組件UserRolePk，然後使用@JoinColumn來解決這個問題，例如，

public class UserRole extends Entity<UserRole> 
{ 
    private User user; 
    private Role role; 

    public UserRole() {} 

    @ManyToOne(fetch=FetchType.EAGER, optional=false) 
    @JoinColumn(name="userid", referencedColumnName = "id", insertable=false, updatable=false) 
    // XmlTransient used to prevent the following exception when JAXB marshals this into XML: 
    // com.sun.istack.SAXException2: A cycle is detected in the object graph. This will cause 
    // infinitely deep XML: 
    @XmlTransient 
    public User getUser() { return this.user; } 

    @ManyToOne(fetch=FetchType.EAGER, optional=false) 
    @JoinColumn(name="roleid", referencedColumnName = "id", insertable=false, updatable=false) 
    public Role getRole() { return this.role; } 
... 
}

來源

2012-08-17 11:36:54

我使用Envers 4.1.3.Final，它肯定還是有這個錯誤：爲給@Embedded組件它日誌審計記錄正確的數據庫，但查詢API forRevisionsOfEntity關係（，在我的情況）根本沒有看到它。它會爲已更改的對象返回一個修訂（MOD），但是當您查看保存對嵌入對象的引用的實際實體屬性時，對於所有修訂，它始終爲空。

我最終編寫了一個解決方法，用原生SQL查詢更改後的值（對於受影響的屬性），因爲我不想改變我的映射只是爲了安裝錯誤的插件。

來源

2012-09-11 09:57:27

難以使用Envers來審計多對多關係

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