Examples of org.springframework.batch.repeat.RepeatStatus

Package org.springframework.batch.repeat

Examples of org.springframework.batch.repeat.RepeatStatus

org.springframework.batch.repeat.RepeatStatus


        // Before starting a new transaction, check for
        // interruption.
        interruptionPolicy.checkInterrupted(stepExecution);


        RepeatStatus result;
        try {
          result = new TransactionTemplate(transactionManager, transactionAttribute)
          .execute(new ChunkTransactionCallback(chunkContext, semaphore));
        }
        catch (UncheckedTransactionException e) {

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    @Override
    public RepeatStatus doInTransaction(TransactionStatus status) {
      TransactionSynchronizationManager.registerSynchronization(this);


      RepeatStatus result = RepeatStatus.CONTINUABLE;


      StepContribution contribution = stepExecution.createStepContribution();


      chunkListener.beforeChunk(chunkContext);

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


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


            @Override
      public RepeatStatus doInIteration(RepeatContext context) throws Exception {
        RepeatStatus result = super.doInIteration(context);
        if (processor.count >= 2) {
          context.setCompleteOnly();
          // If we return null the batch will terminate anyway
          // without an exception...
        }
        return result;
      }
    });


    // 2 items were processed before completion signalled
    assertEquals(2, processor.count);


    // Not all items processed
    assertTrue(result.isContinuable());


  }

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


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


            @Override
      public RepeatStatus doInIteration(RepeatContext context) throws Exception {
        RepeatStatus result = super.doInIteration(context);
        if (processor.count >= 2) {
          context.setTerminateOnly();
          // If we return null the batch will terminate anyway
          // without an exception...
        }
        return result;
      }
    });


    // 2 items were processed before completion signalled
    assertEquals(2, processor.count);


    // Not all items processed
    assertTrue(result.isContinuable());


  }

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   * Test that a result is returned from the batch.
   * @throws Exception
   */
  @Test
  public void testResult() throws Exception {
    RepeatStatus result = template.iterate(new ItemReaderRepeatCallback<Trade>(provider, processor));
    assertEquals(NUMBER_OF_ITEMS, processor.count);
    // We are complete - do not expect to be called again
    assertFalse(result.isContinuable());
  }

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  @Test
  public void testEarlyCompletionWithSessionAndException() throws Exception {


    template.setCompletionPolicy(new SimpleCompletionPolicy(4));


    RepeatStatus result = RepeatStatus.FINISHED;


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


                @Override
        public RepeatStatus doInIteration(RepeatContext context) throws Exception {
          RepeatStatus result = super.doInIteration(context);
          if (processor.count >= 2) {
            context.setCompleteOnly();
            throw new RuntimeException("Barf second try count=" + processor.count);
          }
          return result;
        }
      });
      fail("Expected exception on last item in batch");
    }
    catch (RuntimeException e) {
      // expected
      assertEquals("Barf second try count=2", e.getMessage());
    }


    // 2 items were processed before completion signalled
    assertEquals(2, processor.count);


    System.err.println(result);


    // An exception was thrown by the template so result is still false
    assertFalse(result.isContinuable());


  }

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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);
      }


    });


    assertEquals(NUMBER_OF_ITEMS, processor.count);
    // The chunk executes 3 times because the last one
    // returns false. We terminate the main batch when
    // we encounter a partially empty chunk.
    assertEquals(3, count);
    assertFalse(result.isContinuable());


  }

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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);
      }


    });


    assertEquals(NUMBER_OF_ITEMS, processor.count);
    assertFalse(result.isContinuable());
    assertTrue("Expected at least 3 chunks but found: "+count, count>=3);


  }

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      chunker.reset();
      template.iterate(new ItemReaderRepeatCallback<Trade>(truncated, processor) {


                @Override
        public RepeatStatus doInIteration(RepeatContext context) throws Exception {
          RepeatStatus result = super.doInIteration(context);
          if (!result.isContinuable() && chunker.first()) {
            chunker.set();
          }
          chunker.increment();
          return result;
        }

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   * 
   */
  private static class ResultHolderComparator implements Comparator<ResultHolder> {
        @Override
    public int compare(ResultHolder h1, ResultHolder h2) {
      RepeatStatus result1 = h1.getResult();
      RepeatStatus result2 = h2.getResult();
      if (result1 == null && result2 == null) {
        return 0;
      }
      if (result1 == null) {
        return -1;
      }
      else if (result2 == null) {
        return 1;
      }
      if ((result1.isContinuable() && result2.isContinuable())
          || (!result1.isContinuable() && !result2.isContinuable())) {
        return 0;
      }
      if (result1.isContinuable()) {
        return -1;
      }

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Related Classes of org.springframework.batch.repeat.RepeatStatus

org.springframework.batch.core.step.tasklet.SystemCommandTaskletIntegrationTests

org.springframework.batch.core.step.tasklet.TaskletStep

org.springframework.batch.core.step.tasklet.TaskletStep$ChunkTransactionCallback

org.springframework.batch.repeat.callback.NestedRepeatCallbackTests

org.springframework.batch.repeat.policy.TimeoutCompletionPolicyTests

org.springframework.batch.repeat.support.ChunkedRepeatTests

org.springframework.batch.repeat.support.RepeatTemplate

org.springframework.batch.repeat.support.ResultHolderResultQueue$ResultHolderComparator

org.springframework.batch.repeat.support.SimpleRepeatTemplateTests

org.springframework.batch.repeat.support.TaskExecutorRepeatTemplate

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