Examples of org.springframework.batch.core.step.skip.LimitCheckingItemSkipPolicy

Package org.springframework.batch.core.step.skip

Examples of org.springframework.batch.core.step.skip.LimitCheckingItemSkipPolicy

org.springframework.batch.core.step.skip.LimitCheckingItemSkipPolicy

{@link SkipPolicy} that determines whether or not reading should continuebased upon how many items have been skipped. This is extremely useful behavior, as it allows you to skip records, but will throw a {@link SkipLimitExceededException} if a set limit has been exceeded. Forexample, it is generally advisable to skip {@link FlatFileParseException}s, however, if the vast majority of records are causing exceptions, the file is likely bad.

Furthermore, it is also likely that you only want to skip certain exceptions. {@link FlatFileParseException} is a good example of an exception you willlikely want to skip, but a {@link FileNotFoundException} should causeimmediate termination of the {@link Step}. A {@link Classifier} is used todetermine whether a particular exception is skippable or not.
@author Ben Hale @author Lucas Ward @author Robert Kasanicky @author Dave Syer @author Dan Garrette

  protected SkipPolicy createSkipPolicy() {
    SkipPolicy skipPolicy = this.skipPolicy;
    Map<Class<? extends Throwable>, Boolean> map = new HashMap<Class<? extends Throwable>, Boolean>(
        skippableExceptionClasses);
    map.put(ForceRollbackForWriteSkipException.class, true);
    LimitCheckingItemSkipPolicy limitCheckingItemSkipPolicy = new LimitCheckingItemSkipPolicy(skipLimit, map);
    if (skipPolicy == null) {
      Assert.state(!(skippableExceptionClasses.isEmpty() && skipLimit > 0),
          "If a skip limit is provided then skippable exceptions must also be specified");
      skipPolicy = limitCheckingItemSkipPolicy;
    }

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   */
  @Test
  public void testReadSkipWithPolicy() throws Exception {
    // Should be ignored
    factory.setSkipLimit(0);
    factory.setSkipPolicy(new LimitCheckingItemSkipPolicy(2, Collections
        .<Class<? extends Throwable>, Boolean> singletonMap(Exception.class, true)));
    testReadSkip();
  }

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      @Override
      public String read() throws Exception, UnexpectedInputException, ParseException {
        throw new RuntimeException("Planned");
      }
    }, new RepeatTemplate());
    provider.setSkipPolicy(new LimitCheckingItemSkipPolicy(Integer.MAX_VALUE, Collections.<Class<? extends Throwable>,Boolean>singletonMap(Exception.class, Boolean.TRUE)));
    provider.setMaxSkipsOnRead(10);
    Chunk<String> chunk = null;
    chunk = provider.provide(contribution);
    assertNotNull(chunk);
    assertEquals(0, chunk.getItems().size());

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  // BATCH-1804
  public void testWriteRetryOnNonSkippableException() throws Exception {
    SimpleRetryPolicy retryPolicy = new SimpleRetryPolicy();
    retryPolicy.setMaxAttempts(2);
    batchRetryTemplate.setRetryPolicy(retryPolicy);
    processor.setWriteSkipPolicy(new LimitCheckingItemSkipPolicy(1,
        Collections.<Class<? extends Throwable>, Boolean> singletonMap(
            IllegalArgumentException.class, true)));
    processor.setItemWriter(new ItemWriter<String>() {
      @Override
      public void write(List<? extends String> items) throws Exception {

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org.springframework.batch.core.step.builder.FaultTolerantStepBuilder

org.springframework.batch.core.step.item.FaultTolerantChunkProcessorTests

org.springframework.batch.core.step.item.FaultTolerantChunkProviderTests

org.springframework.batch.core.step.item.FaultTolerantStepFactoryBeanTests

org.springframework.classify.BinaryExceptionClassifier

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