How to use

onReadError

method

in

org.springframework.batch.core.listener.MulticasterBatchListener

/**
 * Surrounds the read call with listener callbacks.
 * @return the item or {@code null} if the data source is exhausted
 * @throws Exception is thrown if error occurs during read.
 */
@Nullable
protected final I doRead() throws Exception {
  try {
    listener.beforeRead();
    I item = itemReader.read();
    if(item != null) {
      listener.afterRead(item);
    }
    return item;
  }
  catch (Exception e) {
    if (logger.isDebugEnabled()) {
      logger.debug(e.getMessage() + " : " + e.getClass().getName());
    }
    listener.onReadError(e);
    throw e;
  }
}

/**
 * Implements reading as well as any related listener calls required.
 *
 * @param contribution a {@link StepContribution}
 * @param chunk a {@link Chunk}
 * @return an item
 * @throws Exception thrown if error occurs during reading or listener calls.
 */
protected final I doProvide(final StepContribution contribution, final Chunk<I> chunk) throws Exception {
  try {
    listener.beforeRead();
    I item = itemReader.read();
    if(item != null) {
      listener.afterRead(item);
    } else {
      chunk.setEnd();
    }
    return item;
  }
  catch (Exception e) {
    if (logger.isDebugEnabled()) {
      logger.debug(e.getMessage() + " : " + e.getClass().getName());
    }
    listener.onReadError(e);
    throw e;
  }
}

/**
 * Test method for
 * {@link org.springframework.batch.core.listener.MulticasterBatchListener#onReadError(java.lang.Exception)}
 * .
 */
@Test
public void testOnReadError() {
  multicast.onReadError(new RuntimeException("foo"));
  assertEquals(1, count);
}

/**
 * Test method for
 * {@link org.springframework.batch.core.listener.MulticasterBatchListener#onReadError(java.lang.Exception)}
 * .
 */
@Test
public void testOnReadErrorFails() {
  error = true;
  try {
    multicast.onReadError(new RuntimeException("foo"));
    fail("Expected StepListenerFailedException");
  }
  catch (StepListenerFailedException e) {
    // expected
    String message = e.getCause().getMessage();
    assertEquals("Wrong message: " + message, "listener error", message);
  }
  assertEquals(1, count);
}

/**
 * Surrounds the read call with listener callbacks.
 * @return the item or {@code null} if the data source is exhausted
 * @throws Exception is thrown if error occurs during read.
 */
@Nullable
protected final I doRead() throws Exception {
  try {
    listener.beforeRead();
    I item = itemReader.read();
    if(item != null) {
      listener.afterRead(item);
    }
    return item;
  }
  catch (Exception e) {
    if (logger.isDebugEnabled()) {
      logger.debug(e.getMessage() + " : " + e.getClass().getName());
    }
    listener.onReadError(e);
    throw e;
  }
}

/**
 * Surrounds the read call with listener callbacks.
 * @return item
 * @throws Exception
 */
protected final I doRead() throws Exception {
  try {
    listener.beforeRead();
    I item = itemReader.read();
    if(item != null) {
      listener.afterRead(item);
    }
    return item;
  }
  catch (Exception e) {
    logger.debug(e.getMessage() + " : " + e.getClass().getName());
    listener.onReadError(e);
    throw e;
  }
}

/**
 * Surrounds the read call with listener callbacks.
 * @return the item or {@code null} if the data source is exhausted
 * @throws Exception is thrown if error occurs during read.
 */
@Nullable
protected final I doRead() throws Exception {
  try {
    listener.beforeRead();
    I item = itemReader.read();
    if(item != null) {
      listener.afterRead(item);
    }
    return item;
  }
  catch (Exception e) {
    if (logger.isDebugEnabled()) {
      logger.debug(e.getMessage() + " : " + e.getClass().getName());
    }
    listener.onReadError(e);
    throw e;
  }
}

/**
 * Implements reading as well as any related listener calls required.
 *
 * @param contribution a {@link StepContribution}
 * @param chunk a {@link Chunk}
 * @return an item
 * @throws Exception
 */
protected final I doProvide(final StepContribution contribution, final Chunk<I> chunk) throws Exception {
  try {
    listener.beforeRead();
    I item = itemReader.read();
    if(item != null) {
      listener.afterRead(item);
    } else {
      chunk.setEnd();
    }
    return item;
  }
  catch (Exception e) {
    logger.debug(e.getMessage() + " : " + e.getClass().getName());
    listener.onReadError(e);
    throw e;
  }
}

/**
 * Implements reading as well as any related listener calls required.
 *
 * @param contribution a {@link StepContribution}
 * @param chunk a {@link Chunk}
 * @return an item
 * @throws Exception thrown if error occurs during reading or listener calls.
 */
protected final I doProvide(final StepContribution contribution, final Chunk<I> chunk) throws Exception {
  try {
    listener.beforeRead();
    I item = itemReader.read();
    if(item != null) {
      listener.afterRead(item);
    } else {
      chunk.setEnd();
    }
    return item;
  }
  catch (Exception e) {
    if (logger.isDebugEnabled()) {
      logger.debug(e.getMessage() + " : " + e.getClass().getName());
    }
    listener.onReadError(e);
    throw e;
  }
}

/**
 * Implements reading as well as any related listener calls required.
 *
 * @param contribution a {@link StepContribution}
 * @param chunk a {@link Chunk}
 * @return an item
 * @throws Exception thrown if error occurs during reading or listener calls.
 */
protected final I doProvide(final StepContribution contribution, final Chunk<I> chunk) throws Exception {
  try {
    listener.beforeRead();
    I item = itemReader.read();
    if(item != null) {
      listener.afterRead(item);
    } else {
      chunk.setEnd();
    }
    return item;
  }
  catch (Exception e) {
    if (logger.isDebugEnabled()) {
      logger.debug(e.getMessage() + " : " + e.getClass().getName());
    }
    listener.onReadError(e);
    throw e;
  }
}

/**
 * Surrounds the read call with listener callbacks.
 * @return item
 * @throws Exception
 */
protected final I doRead() throws Exception {
  try {
    listener.beforeRead();
    I item = itemReader.read();
    listener.afterRead(item);
    return item;
  }
  catch (Exception e) {
    listener.onReadError(e);
    throw e;
  }
}