Examples of RepeatTemplate

org.springframework.batch.repeat.support.RepeatTemplate
Simple implementation and base class for batch templates implementing {@link RepeatOperations}. Provides a framework including interceptors and policies. Subclasses just need to provide a method that gets the next result and one that waits for all the results to be returned from concurrent processes or threads.
N.B. the template accumulates thrown exceptions during the iteration, and they are all processed together when the main loop ends (i.e. finished processing the items). Clients that do not want to stop execution when an exception is thrown can use a specific {@link CompletionPolicy} that does notfinish when exceptions are received. This is not the default behaviour.
Clients that want to take some business action when an exception is thrown by the {@link RepeatCallback} can consider using a custom {@link RepeatListener}instead of trying to customise the {@link CompletionPolicy}. This is generally a friendlier interface to implement, and the {@link RepeatListener#after(RepeatContext,RepeatStatus)} method is passed inthe result of the callback, which would be an instance of {@link Throwable}if the business processing had thrown an exception. If the exception is not to be propagated to the caller, then a non-default {@link CompletionPolicy}needs to be provided as well, but that could be off the shelf, with the business action implemented only in the interceptor. @author Dave Syer

Examples of org.springframework.batch.repeat.support.RepeatTemplate

      public Object invoke(MethodInvocation invocation) throws Throwable {
        list.add("chain");
        return invocation.proceed();
      }
    });
    RepeatTemplate template = new RepeatTemplate();
    template.setCompletionPolicy(new SimpleCompletionPolicy(2));
    interceptor.setRepeatOperations(template);
    service.service();
    assertEquals(2, target.count);
    assertEquals(2, list.size());
  }

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Examples of org.springframework.batch.repeat.support.RepeatTemplate

public class NestedRepeatCallbackTests extends TestCase {


  int count = 0;


  public void testExecute() throws Exception {
    NestedRepeatCallback callback = new NestedRepeatCallback(new RepeatTemplate(), new RepeatCallback() {
            @Override
      public RepeatStatus doInIteration(RepeatContext context) throws Exception {
        count++;
        return RepeatStatus.continueIf(count <= 1);
      }

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Examples of org.springframework.batch.repeat.support.RepeatTemplate


  BatchMessageListenerContainer container;


  @Test
  public void testReceiveAndExecuteWithCallback() throws Exception {
    RepeatTemplate template = new RepeatTemplate();
    template.setCompletionPolicy(new SimpleCompletionPolicy(2));
    container = getContainer(template);


    container.setMessageListener(new MessageListener() {
      @Override
      public void onMessage(Message arg0) {

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Examples of org.springframework.batch.repeat.support.RepeatTemplate


  }


  @Test
  public void testReceiveAndExecuteWithCallbackReturningNull() throws Exception {
    RepeatTemplate template = new RepeatTemplate();
    template.setCompletionPolicy(new SimpleCompletionPolicy(2));
    container = getContainer(template);


    Session session = mock(Session.class);
    MessageConsumer consumer = mock(MessageConsumer.class);
    Message message = null;

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Examples of org.springframework.batch.repeat.support.RepeatTemplate


  }


  @Test
  public void testTransactionalReceiveAndExecuteWithCallbackThrowingException() throws Exception {
    RepeatTemplate template = new RepeatTemplate();
    template.setCompletionPolicy(new SimpleCompletionPolicy(2));
    container = getContainer(template);
    container.setSessionTransacted(true);
    try {
      boolean received = doTestWithException(new IllegalStateException("No way!"), true, 2);
      assertFalse("Message received", received);

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Examples of org.springframework.batch.repeat.support.RepeatTemplate

    }
  }


  @Test
  public void testNonTransactionalReceiveAndExecuteWithCallbackThrowingException() throws Exception {
    RepeatTemplate template = new RepeatTemplate();
    template.setCompletionPolicy(new SimpleCompletionPolicy(2));
    container = getContainer(template);
    container.setSessionTransacted(false);
    boolean received = doTestWithException(new IllegalStateException("No way!"), false, 2);
    assertTrue("Message not received but listener not transactional so this should be true", received);
  }

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Examples of org.springframework.batch.repeat.support.RepeatTemplate

    assertTrue("Message not received but listener not transactional so this should be true", received);
  }


  @Test
  public void testNonTransactionalReceiveAndExecuteWithCallbackThrowingError() throws Exception {
    RepeatTemplate template = new RepeatTemplate();
    template.setCompletionPolicy(new SimpleCompletionPolicy(2));
    container = getContainer(template);
    container.setSessionTransacted(false);
    try {
      boolean received = doTestWithException(new RuntimeException("No way!"), false, 2);
      assertTrue("Message not received but listener not transactional so this should be true", received);

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