如何让 Hibernate Interceptor 获取某些超类字段？

Question

I have some entities. For example

@Entity
@IdClass(SecurityUserPublisherId.class)
@Table(name="SECUSERPUB")
public class SecurityUserPublisher extends Auditable {
    private static final long serialVersionUID = 1L;
    @Id
    @Column(name="USERPUB_CONTACTID", updatable=false, nullable=false)
    protected Integer contactId = null;
    @Id
    @Column(name="USERPUB_PUBID", updatable=false, nullable=false)
    protected Integer publisherId = null;

    public SecurityUserPublisher() {
        super();
        setAudited(true);
    }

    public SecurityUserPublisher(SecurityUserPublisher securityUserPublisher) {
        setContactId(securityUserPublisher.getContactId());
        setPublisherId(securityUserPublisher.getPublisherId());
    }

    public Integer getContactId() {return contactId;}

    public void setContactId(Integer contactId) {this.contactId = contactId;}

    public Integer getPublisherId() {return publisherId;}

    public void setPublisherId(Integer publisherId) {this.publisherId = publisherId;}

    @Transient
    @Override
    public String getPrimaryKeyDisplay() {
        StringBuilder sb = new StringBuilder();
        if (contactId == null) {
            sb.append(" contactId: null");
        } else {
            sb.append(" contactId: " + contactId.toString());
        }
        if (publisherId == null) {
            sb.append(" publisherId: null");
        } else {
            sb.append(" publisherId: " + publisherId.toString());
        }
        return sb.toString();
    }

    @Transient
    @Override
    public String getAuditDetail() {
        return new ToStringBuilder(this).append("contactId", contactId).append("publisherId", publisherId).toString();
    }
}

They extend the Auditable class

public abstract class Auditable implements Serializable {
    private static final long serialVersionUID = 1L;
    protected Integer auditContactId = null;
    protected Boolean audited = false;

    public void setAuditContactId(Integer auditContactId) {this.auditContactId = auditContactId;}
    public Integer getAuditContactId() {return auditContactId;}
    public Boolean isAudited() {return audited;}
    protected void setAudited(Boolean audited) {this.audited = audited;}
    public abstract String getPrimaryKeyDisplay();
    public abstract String getAuditDetail();
}

And I have an interceptor

public class AuditInterceptor extends EmptyInterceptor {
    private static final long serialVersionUID = 1L;

    private Set<Auditable> inserts = new HashSet<>();
    private Set<Auditable> updates = new HashSet<>();
    private Set<Auditable> deletes = new HashSet<>();

    @Override
    public boolean onSave(Object entity, Serializable id, Object[] state, String[] propertyNames, Type[] types)
        throws CallbackException {

        if (entity != null && entity instanceof Auditable && ((Auditable)entity).isAudited()){
            System.out.println(entity.toString());
            System.out.println(id.toString());
            System.out.println(Arrays.toString(state));
            System.out.println(Arrays.toString(propertyNames));
            System.out.println(Arrays.toString(types));
            inserts.add((Auditable)entity);
        }
        return super.onSave(entity, id, state, propertyNames, types);

    }

    @Override
    public boolean onFlushDirty(Object entity, Serializable id, Object[] currentState, Object[] previousState, String[] propertyNames, Type[] types)
        throws CallbackException {

        if (entity instanceof Auditable && ((Auditable)entity).isAudited()){
            updates.add((Auditable)entity);
        }
        return super.onFlushDirty(entity, id, currentState, previousState, propertyNames, types);

    }

    @Override
    public void onDelete(Object entity, Serializable id, Object[] state, String[] propertyNames, Type[] types) {

        if (entity instanceof Auditable && ((Auditable)entity).isAudited()){
            System.out.println(entity.toString());
            System.out.println(id.toString());
            System.out.println(Arrays.toString(state));
            System.out.println(Arrays.toString(propertyNames));
            System.out.println(Arrays.toString(types));
            deletes.add((Auditable)entity);
        }
    }

    //called before commit into database
    @Override
    public void preFlush(@SuppressWarnings("rawtypes") Iterator iterator) {
    }

    //called after committed into database
    @Override
    public void postFlush(@SuppressWarnings("rawtypes") Iterator iterator) {
        try {
            for (Iterator<Auditable> iter = inserts.iterator(); iter.hasNext();) {
                Auditable entity = iter.next();
                iter.remove();
                logIt("Saved", entity);
            }

            for (Iterator<Auditable> iter = updates.iterator(); iter.hasNext();) {
                Auditable entity = iter.next();
                iter.remove();
                logIt("Updated", entity);
            }

            for (Iterator<Auditable> iter = deletes.iterator(); iter.hasNext();) {
                Auditable entity = iter.next();
                iter.remove();
                logIt("Deleted", entity);
            }

        } finally {
            inserts.clear();
            updates.clear();
            deletes.clear();
        }
    }

    public void logIt(String action, Auditable entity) {
        if (!entity.isAudited()) {
            return;
        }
        Session tempSession = SessionHelper.getSession().getSession().getSessionFactory().openSession();
        Audit auditRecord = new Audit();
        auditRecord.setAction(action);
        auditRecord.setContactId(entity.getAuditContactId());
        auditRecord.setDetail(entity.getAuditDetail()); 
        auditRecord.setCreatedTimestamp(new Timestamp(System.currentTimeMillis())); 
        auditRecord.setEntityPK(entity.getPrimaryKeyDisplay()); 
        auditRecord.setEntityName(entity.getClass().toString());
        tempSession.save(auditRecord);
        tempSession.flush();
    }

}

I can create entities

final SecurityUserPublisher secUserPub = new SecurityUserPublisher();
secUserPub.setContactId(currentUser.getContactId());
secUserPub.setPublisherId(publisher.getId());
secUserPub.setAuditContactId(parentFrame.getUser().getContactId());
try {
    SessionHelper.getCreate().createSecurityUserPublisher(secUserPub);

and the audit trail looks good AUDIT_ID 120385 AUDIT_ACTION Saved
AUDIT_DETAIL SecurityUserPublisher@678541a[contactId=8721,publisherId=360] AUDIT_CREATEDTS 2019-04-04 13:52:57 AUDIT_ENTITYPK contactId: 8721 publisherId: 360 AUDIT_ENTITYNAME SecurityUserPublisher AUDIT_CONTACTID 7341

But when I try to delete

final SecurityUserPublisher secUserPub = SessionHelper.getSession().getSecurityUserPublisher(currentUser.getContactId(), publisher.getId());
secUserPub.setAuditContactId(parentFrame.getUser().getContactId());
try {
    SessionHelper.getRemove().removeSecurityUserPublisher(secUserPub);

the audit trail contact id is null, even though I expressly set it before calling the remove. AUDIT_ID 120386 AUDIT_ACTION Deleted
AUDIT_DETAIL SecurityUserPublisher@1d184bc8[contactId=8721,publisherId=360] AUDIT_CREATEDTS 2019-04-04 13:53:35 AUDIT_ENTITYPK contactId: 8721 publisherId: 360 AUDIT_ENTITYNAME SecurityUserPublisher
AUDIT_CONTACTID null

So, how do I get the onDelete to show the contactId in the Audit table?

Answer 1

Use @MappedSuperclass annotation on Auditable class. Otherwise Hibernate ignores super class fields and fields of Auditable class are not saved into DB.