How to use

iterator

method

in

org.springframework.batch.core.listener.OrderedComposite

/**
 * Call the registered listeners in order, respecting and prioritising those
 * that implement {@link Ordered}.
 * @see org.springframework.batch.core.ItemProcessListener#beforeProcess(java.lang.Object)
 */
@Override
public void beforeProcess(T item) {
  for (Iterator<ItemProcessListener<? super T, ? super S>> iterator = listeners.iterator(); iterator.hasNext();) {
    ItemProcessListener<? super T, ? super S> listener = iterator.next();
    listener.beforeProcess(item);
  }
}

/**
 * Call the registered listeners in order, respecting and prioritising those
 * that implement {@link Ordered}.
 * @see org.springframework.batch.core.ItemReadListener#beforeRead()
 */
@Override
public void beforeRead() {
  for (Iterator<ItemReadListener<? super T>> iterator = listeners.iterator(); iterator.hasNext();) {
    ItemReadListener<? super T> listener = iterator.next();
    listener.beforeRead();
  }
}

/**
 * Call the registered listeners in order, respecting and prioritising those
 * that implement {@link Ordered}.
 * @see org.springframework.batch.core.JobExecutionListener#beforeJob(org.springframework.batch.core.JobExecution)
 */
@Override
public void beforeJob(JobExecution jobExecution) {
  for (Iterator<JobExecutionListener> iterator = listeners.iterator(); iterator.hasNext();) {
    JobExecutionListener listener = iterator.next();
    listener.beforeJob(jobExecution);
  }
}

/**
 * Call the registered listeners in order, respecting and prioritising those
 * that implement {@link Ordered}.
 * @see ItemWriteListener#beforeWrite(List)
 */
@Override
public void beforeWrite(List<? extends S> items) {
  for (Iterator<ItemWriteListener<? super S>> iterator = listeners.iterator(); iterator.hasNext();) {
    ItemWriteListener<? super S> listener = iterator.next();
    listener.beforeWrite(items);
  }
}

/**
 * Call the registered listeners in order, respecting and prioritising those
 * that implement {@link Ordered}.
 * @see org.springframework.batch.core.SkipListener#onSkipInRead(java.lang.Throwable)
 */
@Override
public void onSkipInRead(Throwable t) {
  for (Iterator<SkipListener<? super T,? super S>> iterator = listeners.iterator(); iterator.hasNext();) {
    SkipListener<? super T,? super S> listener = iterator.next();
    listener.onSkipInRead(t);
  }
}

/**
 * Call the registered listeners in order, respecting and prioritizing those
 * that implement {@link Ordered}.
 * @see org.springframework.batch.core.StepExecutionListener#beforeStep(StepExecution)
 */
@Override
public void beforeStep(StepExecution stepExecution) {
  for (Iterator<StepExecutionListener> iterator = list.iterator(); iterator.hasNext();) {
    StepExecutionListener listener = iterator.next();
    listener.beforeStep(stepExecution);
  }
}

/**
 * Call the registered listeners in order, respecting and prioritising those
 * that implement {@link Ordered}.
 * @see org.springframework.batch.core.SkipListener#onSkipInWrite(java.lang.Object,
 * java.lang.Throwable)
 */
@Override
public void onSkipInProcess(T item, Throwable t) {
  for (Iterator<SkipListener<? super T,? super S>> iterator = listeners.iterator(); iterator.hasNext();) {
    SkipListener<? super T,? super S> listener = iterator.next();
    listener.onSkipInProcess(item, t);
  }
}

/**
 * Call the registered listeners in order, respecting and prioritising those
 * that implement {@link Ordered}.
 * @see org.springframework.batch.core.SkipListener#onSkipInWrite(java.lang.Object,
 * java.lang.Throwable)
 */
@Override
public void onSkipInWrite(S item, Throwable t) {
  for (Iterator<SkipListener<? super T,? super S>> iterator = listeners.iterator(); iterator.hasNext();) {
    SkipListener<? super T,? super S> listener = iterator.next();
    listener.onSkipInWrite(item, t);
  }
}

/**
 * Call the registered listeners in order, respecting and prioritizing those
 * that implement {@link Ordered}.
 *
 * @see org.springframework.batch.core.ChunkListener#beforeChunk(ChunkContext context)
 */
@Override
public void beforeChunk(ChunkContext context) {
  for (Iterator<ChunkListener> iterator = listeners.iterator(); iterator.hasNext();) {
    ChunkListener listener = iterator.next();
    listener.beforeChunk(context);
  }
}

@Test
public void testSetItems() {
  list.setItems(Arrays.asList(new Object[] { "1", "2" }));
  Iterator<Object> iterator = list.iterator();
  assertEquals("1", iterator.next());
  assertEquals("2", iterator.next());
}

@Test
public void testSetSameObject() {
  list.setItems(Arrays.asList(new Object[] { "1", "1" }));
  Iterator<Object> iterator = list.iterator();
  assertEquals("1", iterator.next());
  assertFalse(iterator.hasNext());
}

@Test
public void testAddOrdered() {
  list.setItems(Arrays.asList((Object) "1"));
  list.add(new Ordered() {
    @Override
    public int getOrder() {
      return 0;
    }
  });
  Iterator<Object> iterator = list.iterator();
  iterator.next();
  assertEquals("1", iterator.next());
}

@Test
public void testAdd() {
  list.setItems(Arrays.asList((Object) "1"));
  list.add("3");
  Iterator<Object> iterator = list.iterator();
  assertEquals("1", iterator.next());
  assertEquals("3", iterator.next());
}

@Test
public void testAddAnnotationOrdered() {
  list.add(new Ordered() {
    @Override
    public int getOrder() {
      return 1;
    }
  });
  OrderedObject item = new OrderedObject();
  list.add(item);
  Iterator<Object> iterator = list.iterator();
  assertEquals(item, iterator.next());
}

@Test
public void testAddMultipleOrdered() {
  list.setItems(Arrays.asList((Object) "1"));
  list.add(new Ordered() {
    @Override
    public int getOrder() {
      return 1;
    }
  });
  list.add(new Ordered() {
    @Override
    public int getOrder() {
      return 0;
    }
  });
  Iterator<Object> iterator = list.iterator();
  assertEquals(0, ((Ordered) iterator.next()).getOrder());
  assertEquals(1, ((Ordered) iterator.next()).getOrder());
  assertEquals("1", iterator.next());
}

@Test
public void testAddDuplicateOrdered() {
  list.setItems(Arrays.asList((Object) "1"));
  list.add(new Ordered() {
    @Override
    public int getOrder() {
      return 1;
    }
  });
  list.add(new Ordered() {
    @Override
    public int getOrder() {
      return 1;
    }
  });
  Iterator<Object> iterator = list.iterator();
  assertEquals(1, ((Ordered) iterator.next()).getOrder());
  assertEquals(1, ((Ordered) iterator.next()).getOrder());
  assertEquals("1", iterator.next());
}

/**
 * Call the registered listeners in order, respecting and prioritising those
 * that implement {@link Ordered}.
 * @see org.springframework.batch.core.JobExecutionListener#beforeJob(org.springframework.batch.core.JobExecution)
 */
@Override
public void beforeJob(JobExecution jobExecution) {
  for (Iterator<JobExecutionListener> iterator = listeners.iterator(); iterator.hasNext();) {
    JobExecutionListener listener = iterator.next();
    listener.beforeJob(jobExecution);
  }
}

/**
 * Call the registered listeners in order, respecting and prioritising those
 * that implement {@link Ordered}.
 * @see org.springframework.batch.core.ItemProcessListener#beforeProcess(java.lang.Object)
 */
@Override
public void beforeProcess(T item) {
  for (Iterator<ItemProcessListener<? super T, ? super S>> iterator = listeners.iterator(); iterator.hasNext();) {
    ItemProcessListener<? super T, ? super S> listener = iterator.next();
    listener.beforeProcess(item);
  }
}

/**
 * Call the registered listeners in order, respecting and prioritizing those
 * that implement {@link Ordered}.
 * @see org.springframework.batch.core.StepExecutionListener#beforeStep(StepExecution)
 */
@Override
public void beforeStep(StepExecution stepExecution) {
  for (Iterator<StepExecutionListener> iterator = list.iterator(); iterator.hasNext();) {
    StepExecutionListener listener = iterator.next();
    listener.beforeStep(stepExecution);
  }
}

/**
 * Call the registered listeners in order, respecting and prioritising those
 * that implement {@link Ordered}.
 * @see org.springframework.batch.core.SkipListener#onSkipInRead(java.lang.Throwable)
 */
@Override
public void onSkipInRead(Throwable t) {
  for (Iterator<SkipListener<? super T,? super S>> iterator = listeners.iterator(); iterator.hasNext();) {
    SkipListener<? super T,? super S> listener = iterator.next();
    listener.onSkipInRead(t);
  }
}