How to use

NeverSkipItemSkipPolicy

in

org.springframework.batch.core.step.skip

/**
 * Setter for policy map. This property should not be changed dynamically -
 * set it once, e.g. in configuration, and then don't change it during a
 * running application. Either this property or the exception classifier
 * directly should be set, but not both.
 *
 * @param policyMap a map of String to {@link SkipPolicy} that will be used
 * to create a {@link Classifier} to locate a policy.
 */
public void setPolicyMap(Map<Class<? extends Throwable>, SkipPolicy> policyMap) {
  SubclassClassifier<Throwable, SkipPolicy> subclassClassifier = new SubclassClassifier<>(
      policyMap, new NeverSkipItemSkipPolicy());
  this.classifier = subclassClassifier;
}

/**
 * Wrap a {@link SkipPolicy} and make it consistent with known fatal exceptions.
 *
 * @param skipPolicy an existing skip policy
 * @return a skip policy that will not skip fatal exceptions
 */
protected SkipPolicy getFatalExceptionAwareProxy(SkipPolicy skipPolicy) {
  NeverSkipItemSkipPolicy neverSkipPolicy = new NeverSkipItemSkipPolicy();
  Map<Class<? extends Throwable>, SkipPolicy> map = new HashMap<>();
  for (Class<? extends Throwable> fatal : nonSkippableExceptionClasses) {
    map.put(fatal, neverSkipPolicy);
  }
  SubclassClassifier<Throwable, SkipPolicy> classifier = new SubclassClassifier<>(skipPolicy);
  classifier.setTypeMap(map);
  ExceptionClassifierSkipPolicy skipPolicyWrapper = new ExceptionClassifierSkipPolicy();
  skipPolicyWrapper.setExceptionClassifier(classifier);
  return skipPolicyWrapper;
}

/**
 * Setter for policy map. This property should not be changed dynamically -
 * set it once, e.g. in configuration, and then don't change it during a
 * running application. Either this property or the exception classifier
 * directly should be set, but not both.
 *
 * @param policyMap a map of String to {@link SkipPolicy} that will be used
 * to create a {@link Classifier} to locate a policy.
 */
public void setPolicyMap(Map<Class<? extends Throwable>, SkipPolicy> policyMap) {
  SubclassClassifier<Throwable, SkipPolicy> subclassClassifier = new SubclassClassifier<Throwable, SkipPolicy>(
      policyMap, new NeverSkipItemSkipPolicy());
  this.classifier = subclassClassifier;
}

/**
 * Setter for policy map. This property should not be changed dynamically -
 * set it once, e.g. in configuration, and then don't change it during a
 * running application. Either this property or the exception classifier
 * directly should be set, but not both.
 * 
 * @param policyMap a map of String to {@link SkipPolicy} that will be used
 * to create a {@link Classifier} to locate a policy.
 */
public void setPolicyMap(Map<Class<? extends Throwable>, SkipPolicy> policyMap) {
  SubclassClassifier<Throwable, SkipPolicy> subclassClassifier = new SubclassClassifier<Throwable, SkipPolicy>(
      policyMap, new NeverSkipItemSkipPolicy());
  this.classifier = subclassClassifier;
}

/**
 * Setter for policy map. This property should not be changed dynamically -
 * set it once, e.g. in configuration, and then don't change it during a
 * running application. Either this property or the exception classifier
 * directly should be set, but not both.
 *
 * @param policyMap a map of String to {@link SkipPolicy} that will be used
 * to create a {@link Classifier} to locate a policy.
 */
public void setPolicyMap(Map<Class<? extends Throwable>, SkipPolicy> policyMap) {
  SubclassClassifier<Throwable, SkipPolicy> subclassClassifier = new SubclassClassifier<Throwable, SkipPolicy>(
      policyMap, new NeverSkipItemSkipPolicy());
  this.classifier = subclassClassifier;
}

/**
 * Setter for policy map. This property should not be changed dynamically -
 * set it once, e.g. in configuration, and then don't change it during a
 * running application. Either this property or the exception classifier
 * directly should be set, but not both.
 *
 * @param policyMap a map of String to {@link SkipPolicy} that will be used
 * to create a {@link Classifier} to locate a policy.
 */
public void setPolicyMap(Map<Class<? extends Throwable>, SkipPolicy> policyMap) {
  SubclassClassifier<Throwable, SkipPolicy> subclassClassifier = new SubclassClassifier<Throwable, SkipPolicy>(
      policyMap, new NeverSkipItemSkipPolicy());
  this.classifier = subclassClassifier;
}

/**
 * Wrap a {@link SkipPolicy} and make it consistent with known fatal exceptions.
 *
 * @param skipPolicy an existing skip policy
 * @return a skip policy that will not skip fatal exceptions
 */
protected SkipPolicy getFatalExceptionAwareProxy(SkipPolicy skipPolicy) {
  NeverSkipItemSkipPolicy neverSkipPolicy = new NeverSkipItemSkipPolicy();
  Map<Class<? extends Throwable>, SkipPolicy> map = new HashMap<Class<? extends Throwable>, SkipPolicy>();
  for (Class<? extends Throwable> fatal : nonSkippableExceptionClasses) {
    map.put(fatal, neverSkipPolicy);
  }
  SubclassClassifier<Throwable, SkipPolicy> classifier = new SubclassClassifier<Throwable, SkipPolicy>(skipPolicy);
  classifier.setTypeMap(map);
  ExceptionClassifierSkipPolicy skipPolicyWrapper = new ExceptionClassifierSkipPolicy();
  skipPolicyWrapper.setExceptionClassifier(classifier);
  return skipPolicyWrapper;
}

/**
 * Wrap a {@link SkipPolicy} and make it consistent with known fatal exceptions.
 *
 * @param skipPolicy an existing skip policy
 * @return a skip policy that will not skip fatal exceptions
 */
protected SkipPolicy getFatalExceptionAwareProxy(SkipPolicy skipPolicy) {
  NeverSkipItemSkipPolicy neverSkipPolicy = new NeverSkipItemSkipPolicy();
  Map<Class<? extends Throwable>, SkipPolicy> map = new HashMap<Class<? extends Throwable>, SkipPolicy>();
  for (Class<? extends Throwable> fatal : nonSkippableExceptionClasses) {
    map.put(fatal, neverSkipPolicy);
  }
  SubclassClassifier<Throwable, SkipPolicy> classifier = new SubclassClassifier<Throwable, SkipPolicy>(skipPolicy);
  classifier.setTypeMap(map);
  ExceptionClassifierSkipPolicy skipPolicyWrapper = new ExceptionClassifierSkipPolicy();
  skipPolicyWrapper.setExceptionClassifier(classifier);
  return skipPolicyWrapper;
}

/**
 * Wrap a {@link SkipPolicy} and make it consistent with known fatal exceptions.
 *
 * @param skipPolicy an existing skip policy
 * @return a skip policy that will not skip fatal exceptions
 */
protected SkipPolicy getFatalExceptionAwareProxy(SkipPolicy skipPolicy) {
  NeverSkipItemSkipPolicy neverSkipPolicy = new NeverSkipItemSkipPolicy();
  Map<Class<? extends Throwable>, SkipPolicy> map = new HashMap<Class<? extends Throwable>, SkipPolicy>();
  for (Class<? extends Throwable> fatal : nonSkippableExceptionClasses) {
    map.put(fatal, neverSkipPolicy);
  }
  SubclassClassifier<Throwable, SkipPolicy> classifier = new SubclassClassifier<Throwable, SkipPolicy>(skipPolicy);
  classifier.setTypeMap(map);
  ExceptionClassifierSkipPolicy skipPolicyWrapper = new ExceptionClassifierSkipPolicy();
  skipPolicyWrapper.setExceptionClassifier(classifier);
  return skipPolicyWrapper;
}

/**
 * Wrap a {@link SkipPolicy} and make it consistent with known fatal
 * exceptions.
 * 
 * @param skipPolicy an existing skip policy
 * @return a skip policy that will not skip fatal exceptions
 */
private SkipPolicy getFatalExceptionAwareProxy(SkipPolicy skipPolicy) {
  NeverSkipItemSkipPolicy neverSkipPolicy = new NeverSkipItemSkipPolicy();
  Map<Class<? extends Throwable>, SkipPolicy> map = new HashMap<Class<? extends Throwable>, SkipPolicy>();
  for (Class<? extends Throwable> fatal : nonSkippableExceptionClasses) {
    map.put(fatal, neverSkipPolicy);
  }
  SubclassClassifier<Throwable, SkipPolicy> classifier = new SubclassClassifier<Throwable, SkipPolicy>(skipPolicy);
  classifier.setTypeMap(map);
  ExceptionClassifierSkipPolicy skipPolicyWrapper = new ExceptionClassifierSkipPolicy();
  skipPolicyWrapper.setExceptionClassifier(classifier);
  return skipPolicyWrapper;
}

Map<Class<? extends Throwable>, SkipPolicy> policyMap = new HashMap<>();
policyMap.put(Throwable.class, new AlwaysSkipItemSkipPolicy());
policyMap.put(JobInterruptedException.class, new NeverSkipItemSkipPolicy());
skipPolicy.setPolicyMap(policyMap);
Classifier<Throwable, Boolean> rollbackClassifier;