Examples of org.springframework.batch.core.step.item.BatchRetryTemplate$BatchRetryState

org.springframework.batch.core.step.item.BatchRetryTemplate

A special purpose retry template that deals specifically with multi-valued stateful retry. This is useful in the case where the operation to be retried operates on multiple items, and when it fails there is no way to decide which (if any) of the items was responsible. The {@link RetryState} used in theexecute methods is composite, and when a failure occurs, all of the keys in the composite are "tarred with the same brush". Subsequent attempts to execute with any of the keys that have failed previously results in a new attempt and the previous state is used to check the {@link RetryPolicy}. If one of the failed items eventually succeeds then the others in the current composite for that attempt will be cleared from the context cache (as normal), but there may still be entries in the cache for the original failed items. This might mean that an item that did not cause a failure is never retried because other items in the same batch fail fatally first. @author Dave Syer


  }


  protected ChunkProcessor<I> createChunkProcessor() {


    BatchRetryTemplate batchRetryTemplate = createRetryOperations();


    FaultTolerantChunkProcessor<I, O> chunkProcessor = new FaultTolerantChunkProcessor<I, O>(getProcessor(),
        getWriter(), batchRetryTemplate);
    chunkProcessor.setBuffering(!isReaderTransactionalQueue());
    chunkProcessor.setProcessorTransactional(processorTransactional);

      retryPolicy = compositeRetryPolicy;
    }


    RetryPolicy retryPolicyWrapper = getFatalExceptionAwareProxy(retryPolicy);


    BatchRetryTemplate batchRetryTemplate = new BatchRetryTemplate();
    if (backOffPolicy != null) {
      batchRetryTemplate.setBackOffPolicy(backOffPolicy);
    }
    batchRetryTemplate.setRetryPolicy(retryPolicyWrapper);


    // Coordinate the retry policy with the exception handler:
    RepeatOperations stepOperations = getStepOperations();
    if (stepOperations instanceof RepeatTemplate) {
      SimpleRetryExceptionHandler exceptionHandler = new SimpleRetryExceptionHandler(retryPolicyWrapper,
          getExceptionHandler(), nonRetryableExceptionClasses);
      ((RepeatTemplate) stepOperations).setExceptionHandler(exceptionHandler);
    }


    if (retryContextCache != null) {
      batchRetryTemplate.setRetryContextCache(retryContextCache);
    }


    if (retryListeners != null) {
      batchRetryTemplate.setListeners(retryListeners.toArray(new RetryListener[0]));
    }
    return batchRetryTemplate;


  }

Examples of org.springframework.batch.core.step.item.BatchRetryTemplate$BatchRetryState

Related Classes of org.springframework.batch.core.step.item.BatchRetryTemplate$BatchRetryState