Examples of org.hibernate.Interceptor

org.hibernate.Interceptor
Allows user code to inspect and/or change property values. Inspection occurs before property values are written and after they are read from the database. There might be a single instance of Interceptor for a SessionFactory, or a new instance might be specified for each Session. Whichever approach is used, the interceptor must be serializable if the Session is to be serializable. This means that SessionFactory-scoped interceptors should implement readResolve(). The Session may not be invoked from a callback (nor may a callback cause a collection or proxy to be lazily initialized). Instead of implementing this interface directly, it is usually better to extend EmptyInterceptor and override only the callback methods of interest. @see SessionBuilder#interceptor(Interceptor) @see SharedSessionBuilder#interceptor() @see org.hibernate.cfg.Configuration#setInterceptor(Interceptor) @see EmptyInterceptor @author Gavin King

                                    Object[] currentState,
                                    Object[] previousState,
                                    String[] propertyNames, Type[] types) {
        boolean result = false;
        for (Iterator iterator = _interceptors.iterator(); iterator.hasNext();) {
            Interceptor interceptor = (Interceptor) iterator.next();
            if (interceptor.onFlushDirty(entity, id, currentState, previousState, propertyNames, types)) {
                 /* Returns true if one interceptor in the chain has modified 
                  * the object current state result = true;
                  */
                result = true;
             }

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    @Override
    public boolean onSave(Object entity, Serializable id, Object[] state,
                                    String[] propertyNames, Type[] types) {
        boolean result = false;
        for (Iterator iterator = _interceptors.iterator(); iterator.hasNext();) {
            Interceptor interceptor = (Interceptor) iterator.next();
            if (interceptor.onSave(entity, id, state, propertyNames, types)) {
                /* Returns true if one interceptor in the chain has
                 * modified the object state result = true;
                 */
                result = true;
            }

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     */
    @Override
    public void onDelete(Object entity, Serializable id, Object[] state,
                                    String[] propertyNames, Type[] types) {
        for (Iterator iterator = _interceptors.iterator(); iterator.hasNext();) {
            Interceptor interceptor = (Interceptor) iterator.next();
            interceptor.onDelete(entity, id, state, propertyNames, types);
        }
    }

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                                    Object[] currentState,
                                    Object[] previousState,
                                    String[] propertyNames, Type[] types) {
        int[] result = null;
        for (Iterator iterator = _interceptors.iterator(); iterator.hasNext();) {
            Interceptor interceptor = (Interceptor) iterator.next();
            result =
                interceptor.findDirty(entity, id, currentState, previousState, propertyNames, types);
            if (result != null) {
                /* If any interceptor has returned something not null,
                 * stop the chain
                 */
                break;

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     */
    @Override
    public void preFlush(Iterator entities) {
        List entityList = createList(entities);
        for (Iterator iterator = _interceptors.iterator(); iterator.hasNext();) {
            Interceptor interceptor = (Interceptor) iterator.next();
            interceptor.preFlush(entityList.iterator());
        }
    }

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     */
    @Override
    public void postFlush(Iterator entities) {
        List entityList = createList(entities);
        for (Iterator iterator = _interceptors.iterator(); iterator.hasNext();) {
            Interceptor interceptor = (Interceptor) iterator.next();
            interceptor.postFlush(entityList.iterator());
        }
    }

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      // Handle mappings....
      handleMappings( cfg );


      // Handle interceptor....
      Interceptor interceptorInstance = generateInterceptorInstance();
      if ( interceptorInstance != null )
      {
         cfg.setInterceptor( interceptorInstance );
      }

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    CollectionStatistics userGroupStats = sfi().getStatistics()
        .getCollectionStatistics( User.class.getName() + ".groups" );
    CollectionStatistics groupUserStats = sfi().getStatistics()
        .getCollectionStatistics( Group.class.getName() + ".users" );


    Interceptor testingInterceptor = new EmptyInterceptor() {
      public String onPrepareStatement(String sql) {
        // ugh, this is the best way I could come up with to assert this.
        // unfortunately, this is highly dependent on the dialect and its
        // outer join fragment.  But at least this wil fail on the majority
        // of dialects...

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    Session session = null;


    try {
      if (txObject.getSessionHolder() == null || txObject.getSessionHolder().isSynchronizedWithTransaction()) {
        Interceptor entityInterceptor = getEntityInterceptor();
        Session newSession = (entityInterceptor != null ?
            getSessionFactory().openSession(entityInterceptor) : getSessionFactory().openSession());
        if (logger.isDebugEnabled()) {
          logger.debug("Opened new Session [" + SessionFactoryUtils.toString(newSession) +
              "] for Hibernate transaction");

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    Session session = null;


    try {
      if (txObject.getSessionHolder() == null || txObject.getSessionHolder().isSynchronizedWithTransaction()) {
        Interceptor entityInterceptor = getEntityInterceptor();
        Session newSession = (entityInterceptor != null ?
            getSessionFactory().openSession(entityInterceptor) : getSessionFactory().openSession());
        if (logger.isDebugEnabled()) {
          logger.debug("Opened new Session [" + SessionFactoryUtils.toString(newSession) +
              "] for Hibernate transaction");

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