How to use

getStep

method

in

org.springframework.batch.core.job.flow.support.state.StepState

/**
 * Provides an extension point to provide alternative {@link StepState}
 * implementations within a {@link SimpleFlow}
 *
 * @param state The state that will be used to create the StepState
 * @param oldName The name to be replaced
 * @param stateName The name for the new State
 * @return a state for the requested data
 */
protected State createNewStepState(State state, String oldName,
    String stateName) {
  return new StepState(stateName, ((StepState) state).getStep(oldName));
}

/**
 * Provides an extension point to provide alternative {@link StepState}
 * implementations within a {@link SimpleFlow}
 *
 * @param state The state that will be used to create the StepState
 * @param oldName The name to be replaced
 * @param stateName The name for the new State
 * @return a state for the requested data
 */
protected State createNewStepState(State state, String oldName,
    String stateName) {
  return new StepState(stateName, ((StepState) state).getStep(oldName));
}

/**
 * Provides an extension point to provide alternative {@link StepState}
 * implementations within a {@link SimpleFlow}
 *
 * @param state The state that will be used to create the StepState
 * @param oldName The name to be replaced
 * @param stateName The name for the new State
 * @return
 */
protected State createNewStepState(State state, String oldName,
    String stateName) {
  return new StepState(stateName, ((StepState) state).getStep(oldName));
}

/**
 * Provides an extension point to provide alternative {@link StepState}
 * implementations within a {@link SimpleFlow}
 *
 * @param state The state that will be used to create the StepState
 * @param oldName The name to be replaced
 * @param stateName The name for the new State
 * @return a state for the requested data
 */
protected State createNewStepState(State state, String oldName,
    String stateName) {
  return new StepState(stateName, ((StepState) state).getStep(oldName));
}

/**
 * Convenience method to get a state that proxies the input but with a
 * different name, appropriate to this flow. If the state is a StepState
 * then the step name is also changed.
 * 
 * @param state
 * @return
 */
private State getProxyState(State state) {
  String oldName = state.getName();
  if (oldName.startsWith(prefix)) {
    return state;
  }
  String stateName = prefix + oldName;
  if (state instanceof StepState) {
    return new StepState(stateName, ((StepState) state).getStep());
  }
  return new DelegateState(stateName, state);
}