How to use

StepListenerMetaData

in

org.springframework.batch.core.listener

@Override
protected ListenerMetaData getMetaDataFromPropertyName(String propertyName) {
  return StepListenerMetaData.fromPropertyName(propertyName);
}

@Override
protected ListenerMetaData[] getMetaDataValues() {
  return StepListenerMetaData.values();
}

@Test(expected = IllegalArgumentException.class)
public void testWrongSignatureNamedMethod() {
  AbstractTestComponent delegate = new AbstractTestComponent() {
    @SuppressWarnings("unused")
    public void aMethod(Integer item) {
      executed = true;
    }
  };
  factoryBean.setDelegate(delegate);
  Map<String, String> metaDataMap = new HashMap<>();
  metaDataMap.put(AFTER_WRITE.getPropertyName(), "aMethod");
  factoryBean.setMetaDataMap(metaDataMap);
  factoryBean.getObject();
}

@Test
public void testAnnotatingInterfaceResultsInOneCall() throws Exception {
  MultipleAfterStep delegate = new MultipleAfterStep();
  factoryBean.setDelegate(delegate);
  Map<String, String> metaDataMap = new HashMap<>();
  metaDataMap.put(AFTER_STEP.getPropertyName(), "afterStep");
  factoryBean.setMetaDataMap(metaDataMap);
  StepListener listener = (StepListener) factoryBean.getObject();
  ((StepExecutionListener) listener).afterStep(stepExecution);
  assertEquals(1, delegate.callcount);
}

public StepListenerParser() {
  this(StepListenerMetaData.values());
}

@Override
protected ListenerMetaData getMetaDataFromPropertyName(String propertyName) {
  ListenerMetaData metaData = StepListenerMetaData.fromPropertyName(propertyName);
  if(metaData == null) {
    metaData = JsrStepListenerMetaData.fromPropertyName(propertyName);
  }
  return metaData;
}

@Test
public void testAllThreeTypes() throws Exception {
  // Test to make sure if someone has annotated a method, implemented the
  // interface, and given a string
  // method name, that all three will be called
  ThreeStepExecutionListener delegate = new ThreeStepExecutionListener();
  factoryBean.setDelegate(delegate);
  Map<String, String> metaDataMap = new HashMap<>();
  metaDataMap.put(AFTER_STEP.getPropertyName(), "destroy");
  factoryBean.setMetaDataMap(metaDataMap);
  StepListener listener = (StepListener) factoryBean.getObject();
  ((StepExecutionListener) listener).afterStep(stepExecution);
  assertEquals(3, delegate.callcount);
}

  @Override
  protected ListenerMetaData[] getMetaDataValues() {
    List<ListenerMetaData> values = new ArrayList<>();
    Collections.addAll(values, StepListenerMetaData.values());
    Collections.addAll(values, JsrStepListenerMetaData.values());

    return values.toArray(new ListenerMetaData[values.size()]);
  }
}

@Override
protected ListenerMetaData getMetaDataFromPropertyName(String propertyName) {
  return StepListenerMetaData.fromPropertyName(propertyName);
}

@Test
public void testEmptySignatureNamedMethod() {
  AbstractTestComponent delegate = new AbstractTestComponent() {
    @SuppressWarnings("unused")
    public void aMethod() {
      executed = true;
    }
  };
  factoryBean.setDelegate(delegate);
  Map<String, String> metaDataMap = new HashMap<>();
  metaDataMap.put(AFTER_WRITE.getPropertyName(), "aMethod");
  factoryBean.setMetaDataMap(metaDataMap);
  @SuppressWarnings("unchecked")
  ItemWriteListener<String> listener = (ItemWriteListener<String>) factoryBean.getObject();
  listener.afterWrite(Arrays.asList("foo", "bar"));
  assertTrue(delegate.isExecuted());
}

  /**
   * Convenience method to check whether the given object is or can be made
   * into a {@link StepListener}.
   *
   * @param delegate the object to check
   * @return true if the delegate is an instance of any of the
   *         {@link StepListener} interfaces, or contains the marker
   *         annotations
   */
  public static boolean isListener(Object delegate) {
    return AbstractListenerFactoryBean.isListener(delegate, StepListener.class, StepListenerMetaData.values());
  }
}

@Override
protected ListenerMetaData getMetaDataFromPropertyName(String propertyName) {
  return StepListenerMetaData.fromPropertyName(propertyName);
}

@Test
public void testRightSignatureNamedMethod() {
  AbstractTestComponent delegate = new AbstractTestComponent() {
    @SuppressWarnings("unused")
    public void aMethod(List<String> items) {
      executed = true;
      assertEquals("foo", items.get(0));
      assertEquals("bar", items.get(1));
    }
  };
  factoryBean.setDelegate(delegate);
  Map<String, String> metaDataMap = new HashMap<>();
  metaDataMap.put(AFTER_WRITE.getPropertyName(), "aMethod");
  factoryBean.setMetaDataMap(metaDataMap);
  @SuppressWarnings("unchecked")
  ItemWriteListener<String> listener = (ItemWriteListener<String>) factoryBean.getObject();
  listener.afterWrite(Arrays.asList("foo", "bar"));
  assertTrue(delegate.isExecuted());
}

@Override
protected ListenerMetaData[] getMetaDataValues() {
  return StepListenerMetaData.values();
}

@Override
protected ListenerMetaData getMetaDataFromPropertyName(String propertyName) {
  return StepListenerMetaData.fromPropertyName(propertyName);
}

@Override
protected ListenerMetaData[] getMetaDataValues() {
  return StepListenerMetaData.values();
}

protected ListenerMetaData getMetaDataFromPropertyName(String propertyName) {
  return StepListenerMetaData.fromPropertyName(propertyName);
}

protected ListenerMetaData[] getMetaDataValues() {
  return StepListenerMetaData.values();
}

@Override
protected ListenerMetaData getMetaDataFromPropertyName(String propertyName) {
  ListenerMetaData metaData = StepListenerMetaData.fromPropertyName(propertyName);
  if(metaData == null) {
    metaData = JsrStepListenerMetaData.fromPropertyName(propertyName);
  }
  return metaData;
}

@Override
protected ListenerMetaData[] getMetaDataValues() {
  return StepListenerMetaData.values();
}