org.springframework.batch.core.listener.MulticasterBatchListener.beforeRead java code examples

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}

/**
 * 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#beforeRead()}
 * .
 */
@Test
public void testBeforeRead() {
  multicast.beforeRead();
  assertEquals(1, count);
}

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

@Test
public void testBeforeReadFails_withAnnotatedListener() {
  StepListener listener = StepListenerFactoryBean.getListener(new AnnotationBasedStepListener());
  multicast.register(listener);
  try {
    multicast.beforeRead();
    fail("Expected StepListenerFailedException");
  } catch (StepListenerFailedException e) {
    // expected
    Throwable cause = e.getCause();
    String message = cause.getMessage();
    assertTrue(cause instanceof IllegalStateException);
    assertEquals("Wrong message: " + message, "listener error", message);
  }
}

/**
 * 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;
  }
}

Popular methods of MulticasterBatchListener

afterProcess
afterRead
afterWrite
beforeProcess
beforeWrite
onReadError
onSkipInProcess
onSkipInRead
onSkipInWrite
onWriteError
register
Register the listener for callbacks on the appropriate interfaces implemented. Any StepListener can
onProcessError

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How to use beforeReadmethodin org.springframework.batch.core.listener.MulticasterBatchListener

Best Java code snippets using org.springframework.batch.core.listener.MulticasterBatchListener.beforeRead (Showing top 12 results out of 315)

How to use
beforeRead
method
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org.springframework.batch.core.listener.MulticasterBatchListener