Examples of org.springframework.batch.repeat.policy.SimpleCompletionPolicy

Package org.springframework.batch.repeat.policy

Examples of org.springframework.batch.repeat.policy.SimpleCompletionPolicy

org.springframework.batch.repeat.policy.SimpleCompletionPolicy
Policy for terminating a batch after a fixed number of operations. Internal state is maintained and a counter incremented, so successful use of this policy requires that isComplete() is only called once per batch item. Using the standard {@link RepeatTemplate} should ensure this contract is kept, but it needsto be carefully monitored. @author Dave Syer

    }
    if (chunkSize == 0) {
      logger.info("Setting commit interval to default value (" + DEFAULT_COMMIT_INTERVAL + ")");
      chunkSize = DEFAULT_COMMIT_INTERVAL;
    }
    return new SimpleCompletionPolicy(chunkSize);
  }

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  @Override
  protected void setChunk(SimpleStepBuilder<I, O> builder) {
    if(timeout != null && getCommitInterval() != null) {
      CompositeCompletionPolicy completionPolicy = new CompositeCompletionPolicy();
      CompletionPolicy [] policies = new CompletionPolicy[2];
      policies[0] = new SimpleCompletionPolicy(getCommitInterval());
      policies[1] = new TimeoutTerminationPolicy(timeout * 1000);
      completionPolicy.setPolicies(policies);
      builder.chunk(completionPolicy);
    } else if(timeout != null) {
      builder.chunk(new TimeoutTerminationPolicy(timeout * 1000));

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    SimpleStepFactoryBean<String, String> factory = getStepFactory("foo");


    // but exception expected after setting commit interval and completion
    // policy
    factory.setCommitInterval(1);
    factory.setChunkCompletionPolicy(new SimpleCompletionPolicy(2));
    try {
      factory.getObject();
      fail();
    }
    catch (IllegalStateException e) {

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  int count = 0;


  public RepeatTemplate getRepeatTemplate() {
    template = new RepeatTemplate();
    // default stop after more items than exist in dataset
    template.setCompletionPolicy(new SimpleCompletionPolicy(8));
    return template;
  }

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   * @throws Exception
   */
  @Test
  public void testEarlyCompletionWithPolicy() throws Exception {


    template.setCompletionPolicy(new SimpleCompletionPolicy(2));


    template.iterate(new ItemReaderRepeatCallback<Trade>(provider, processor));


    assertEquals(2, processor.count);

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  }


  @Test
  public void testOuterContextPreserved() throws Exception {
    RepeatTemplate outer = getRepeatTemplate();
    outer.setCompletionPolicy(new SimpleCompletionPolicy(2));
    RepeatTemplate inner = getRepeatTemplate();
    outer.iterate(new NestedRepeatCallback(inner, new RepeatCallback() {
            @Override
      public RepeatStatus doInIteration(RepeatContext context) throws Exception {
        count++;

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    assertFalse(result.isContinuable());
  }


  @Test
  public void testExceptionThrownOnLastItem() throws Exception {
    template.setCompletionPolicy(new SimpleCompletionPolicy(2));
    try {
      template.iterate(new RepeatCallback() {
                @Override
        public RepeatStatus doInIteration(RepeatContext context) throws Exception {
          count++;

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   * @throws Exception
   */
  @Test
  public void testEarlyCompletionWithSessionAndException() throws Exception {


    template.setCompletionPolicy(new SimpleCompletionPolicy(4));


    RepeatStatus result = RepeatStatus.FINISHED;


    try {
      result = template.iterate(new ItemReaderRepeatCallback<Trade>(provider, processor) {

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    final RepeatCallback callback = new ItemReaderRepeatCallback<Trade>(provider, processor);


    final RepeatTemplate chunkTemplate = new RepeatTemplate();
    // The policy is resettable so we only have to resolve this dependency
    // once
    chunkTemplate.setCompletionPolicy(new SimpleCompletionPolicy(2));


    RepeatStatus result = repeatTemplate.iterate(new NestedRepeatCallback(chunkTemplate, callback) {


            @Override
      public RepeatStatus doInIteration(RepeatContext context) throws Exception {

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    final RepeatCallback callback = new ItemReaderRepeatCallback<Trade>(provider, processor);


    final TaskExecutorRepeatTemplate chunkTemplate = new TaskExecutorRepeatTemplate();
    // The policy is resettable so we only have to resolve this dependency
    // once
    chunkTemplate.setCompletionPolicy(new SimpleCompletionPolicy(2));
    chunkTemplate.setTaskExecutor(new SimpleAsyncTaskExecutor());


    RepeatStatus result = repeatTemplate.iterate(new NestedRepeatCallback(chunkTemplate, callback) {


            @Override

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