How to use

getStates

method

in

org.springframework.batch.core.job.flow.Flow

private void validateFirstStep(State startState)
    throws JobExecutionException {
  while(true) {
    if(startState instanceof DelegateState) {
      startState = ((DelegateState) startState).getState();
    } else if(startState instanceof JsrStepState) {
      String stepName = startState.getName().substring(startState.getName().indexOf(".") + 1, startState.getName().length());
      Step step = ((JsrStepState) startState).getStep(stepName);
      if(step instanceof DecisionStep) {
        throw new JobExecutionException("Decision step is an invalid first step");
      } else {
        break;
      }
    } else if(startState instanceof FlowState){
      Flow firstFlow = ((FlowState) startState).getFlows().iterator().next();
      startState = firstFlow.getStates().iterator().next();
    } else {
      break;
    }
  }
}

/**
 * @param flow
 * @param map
 */
private void findSteps(Flow flow, Map<String, Step> map) {
  for (State state : flow.getStates()) {
    if (state instanceof StepLocator) {
      StepLocator locator = (StepLocator) state;
      for (String name : locator.getStepNames()) {
        map.put(name, locator.getStep(name));
      }
    } else if (state instanceof StepHolder) {
      Step step = ((StepHolder) state).getStep();
      String name = step.getName();
      stepMap.put(name, step);
    }
    else if (state instanceof FlowHolder) {
      for (Flow subflow : ((FlowHolder) state).getFlows()) {
        findSteps(subflow, map);
      }
    }
  }
}

private void validateFirstStep(State startState)
    throws JobExecutionException {
  while(true) {
    if(startState instanceof DelegateState) {
      startState = ((DelegateState) startState).getState();
    } else if(startState instanceof JsrStepState) {
      String stepName = startState.getName().substring(startState.getName().indexOf(".") + 1, startState.getName().length());
      Step step = ((JsrStepState) startState).getStep(stepName);
      if(step instanceof DecisionStep) {
        throw new JobExecutionException("Decision step is an invalid first step");
      } else {
        break;
      }
    } else if(startState instanceof FlowState){
      Flow firstFlow = ((FlowState) startState).getFlows().iterator().next();
      startState = firstFlow.getStates().iterator().next();
    } else {
      break;
    }
  }
}

private void validateFirstStep(State startState)
    throws JobExecutionException {
  while(true) {
    if(startState instanceof DelegateState) {
      startState = ((DelegateState) startState).getState();
    } else if(startState instanceof JsrStepState) {
      String stepName = startState.getName().substring(startState.getName().indexOf(".") + 1, startState.getName().length());
      Step step = ((JsrStepState) startState).getStep(stepName);
      if(step instanceof DecisionStep) {
        throw new JobExecutionException("Decision step is an invalid first step");
      } else {
        break;
      }
    } else if(startState instanceof FlowState){
      Flow firstFlow = ((FlowState) startState).getFlows().iterator().next();
      startState = firstFlow.getStates().iterator().next();
    } else {
      break;
    }
  }
}

private void validateFirstStep(State startState)
    throws JobExecutionException {
  while(true) {
    if(startState instanceof DelegateState) {
      startState = ((DelegateState) startState).getState();
    } else if(startState instanceof JsrStepState) {
      String stepName = startState.getName().substring(startState.getName().indexOf(".") + 1, startState.getName().length());
      Step step = ((JsrStepState) startState).getStep(stepName);
      if(step instanceof DecisionStep) {
        throw new JobExecutionException("Decision step is an invalid first step");
      } else {
        break;
      }
    } else if(startState instanceof FlowState){
      Flow firstFlow = ((FlowState) startState).getFlows().iterator().next();
      startState = firstFlow.getStates().iterator().next();
    } else {
      break;
    }
  }
}

/**
 * @param flow
 * @param map
 */
private void findSteps(Flow flow, Map<String, Step> map) {
  for (State state : flow.getStates()) {
    if (state instanceof StepLocator) {
      StepLocator locator = (StepLocator) state;
      for (String name : locator.getStepNames()) {
        map.put(name, locator.getStep(name));
      }
    } else if (state instanceof StepHolder) {
      Step step = ((StepHolder) state).getStep();
      String name = step.getName();
      stepMap.put(name, step);
    }
    else if (state instanceof FlowHolder) {
      for (Flow subflow : ((FlowHolder) state).getFlows()) {
        findSteps(subflow, map);
      }
    }
  }
}

/**
 * @param flow
 * @param map
 */
private void findSteps(Flow flow, Map<String, Step> map) {
  for (State state : flow.getStates()) {
    if (state instanceof StepLocator) {
      StepLocator locator = (StepLocator) state;
      for (String name : locator.getStepNames()) {
        map.put(name, locator.getStep(name));
      }
    } else if (state instanceof StepHolder) {
      Step step = ((StepHolder) state).getStep();
      String name = step.getName();
      stepMap.put(name, step);
    }
    else if (state instanceof FlowHolder) {
      for (Flow subflow : ((FlowHolder) state).getFlows()) {
        findSteps(subflow, map);
      }
    }
  }
}

/**
 * @param flow
 * @param map
 */
private void findSteps(Flow flow, Map<String, Step> map) {
  for (State state : flow.getStates()) {
    if (state instanceof StepLocator) {
      StepLocator locator = (StepLocator) state;
      for (String name : locator.getStepNames()) {
        map.put(name, locator.getStep(name));
      }
    } else if (state instanceof StepHolder) {
      Step step = ((StepHolder) state).getStep();
      String name = step.getName();
      stepMap.put(name, step);
    }
    else if (state instanceof FlowHolder) {
      for (Flow subflow : ((FlowHolder) state).getFlows()) {
        findSteps(subflow, map);
      }
    }
  }
}

/**
 * @param flow
 * @param map
 */
private void findSteps(Flow flow, Map<String, Step> map) {
  for (State state : flow.getStates()) {
    if (state instanceof StepHolder) {
      Step step = ((StepHolder) state).getStep();
      String name = step.getName();
      stepMap.put(name, step);
    }
    else if (state instanceof FlowHolder) {
      for (Flow subflow : ((FlowHolder) state).getFlows()) {
        findSteps(subflow, map);
      }
    }
    else if (state instanceof StepLocator) {
      StepLocator locator = (StepLocator) state;
      for (String name : locator.getStepNames()) {
        map.put(name, locator.getStep(name));
      }
    }
  }
}