How to use

createState

method

in

org.springframework.batch.core.step.item.BatchRetryTemplate

BatchRetryTemplate.createState(getInputKeys(inputs), rollbackClassifier));

  template.execute(retryCallback, BatchRetryTemplate.createState(outputs));
  fail("Expected RecoverableException");
  template.execute(retryCallback, BatchRetryTemplate.createState(outputs));
  fail("Expected ExhaustedRetryException");
String[] result = template.execute(retryCallback, BatchRetryTemplate.createState(outputs));
assertEquals("[d, c]", Arrays.toString(result));
  template.execute(retryCallback, BatchRetryTemplate.createState(outputs));
  fail("Expected ExhaustedRetryException");
result = template.execute(retryCallback, BatchRetryTemplate.createState(outputs));
assertEquals("[e, f]", Arrays.toString(result));

@Test(expected = ExhaustedRetryException.class)
public void testExhaustedRetry() throws Exception {
  BatchRetryTemplate template = new BatchRetryTemplate();
  template.setRetryPolicy(new SimpleRetryPolicy(1, Collections
      .<Class<? extends Throwable>, Boolean> singletonMap(Exception.class, true)));
  RetryCallback<String[], Exception> retryCallback = new RetryCallback<String[], Exception>() {
    @Override
    public String[] doWithRetry(RetryContext context) throws Exception {
      if (count++ < 2) {
        throw new RecoverableException("Recoverable");
      }
      return outputs.toArray(new String[0]);
    }
  };
  outputs = Arrays.asList("a", "b");
  try {
    template.execute(retryCallback, BatchRetryTemplate.createState(outputs));
    fail("Expected RecoverableException");
  }
  catch (RecoverableException e) {
    assertEquals("Recoverable", e.getMessage());
  }
  outputs = Arrays.asList("a", "c");
  template.execute(retryCallback, BatchRetryTemplate.createState(outputs));
}

  template.execute(retryCallback, recoveryCallback, BatchRetryTemplate.createState(outputs));
  fail("Expected RecoverableException");
String[] result = template.execute(retryCallback, recoveryCallback, BatchRetryTemplate.createState(outputs));
assertEquals("[r:b, r:c]", Arrays.toString(result));

BatchRetryTemplate.createState(getInputKeys(inputs), rollbackClassifier));

BatchRetryTemplate.createState(getInputKeys(inputs), rollbackClassifier));

BatchRetryTemplate.createState(getInputKeys(inputs), rollbackClassifier));

batchRetryTemplate.execute(retryCallback, batchRecoveryCallback, BatchRetryTemplate.createState(
    getInputKeys(inputs), rollbackClassifier));