Examples of org.springframework.batch.repeat.callback.NestedRepeatCallback

Package org.springframework.batch.repeat.callback

Examples of org.springframework.batch.repeat.callback.NestedRepeatCallback

org.springframework.batch.repeat.callback.NestedRepeatCallback
Callback that delegates to another callback, via a {@link RepeatOperations}instance. Useful when nesting or composing batches in one another, e.g. for breaking a batch down into chunks. @author Dave Syer


  @Test
  public void testNestedSession() throws Exception {
    RepeatTemplate outer = getRepeatTemplate();
    RepeatTemplate inner = getRepeatTemplate();
    outer.iterate(new NestedRepeatCallback(inner, new RepeatCallback() {
            @Override
      public RepeatStatus doInIteration(RepeatContext context) throws Exception {
        count++;
        assertNotNull(context);
        assertNotSame("Nested batch should have new session", context, context.getParent());

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  @Test
  public void testNestedSessionTerminatesBeforeIteration() throws Exception {
    RepeatTemplate outer = getRepeatTemplate();
    RepeatTemplate inner = getRepeatTemplate();
    outer.iterate(new NestedRepeatCallback(inner, new RepeatCallback() {
            @Override
      public RepeatStatus doInIteration(RepeatContext context) throws Exception {
        count++;
        assertEquals(2, count);
        fail("Nested batch should not have been executed");

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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++;
        assertNotNull(context);
        assertNotSame("Nested batch should have new session", context, context.getParent());

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    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 {
        count++; // for test assertion
        return super.doInIteration(context);

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    // 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
      public RepeatStatus doInIteration(RepeatContext context) throws Exception {
        count++; // for test assertion
        return super.doInIteration(context);

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  public void testNestedSession() throws Exception {


    RepeatTemplate outer = getRepeatTemplate();
    RepeatTemplate inner = new RepeatTemplate();


    outer.iterate(new NestedRepeatCallback(inner, new RepeatCallback() {
            @Override
      public RepeatStatus doInIteration(RepeatContext context) throws Exception {
        count++;
        assertNotNull(context);
        assertNotSame("Nested batch should have new session", context, context.getParent());

View Full Code Here

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Related Classes of org.springframework.batch.repeat.callback.NestedRepeatCallback

org.springframework.batch.repeat.support.ChunkedRepeatTests

org.springframework.batch.repeat.support.SimpleRepeatTemplateTests

org.springframework.batch.repeat.support.TaskExecutorRepeatTemplateAsynchronousTests

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