Example usage for org.springframework.batch.core.job.flow State handle

Introduction

In this page you can find the example usage for org.springframework.batch.core.job.flow State handle.

Prototype

FlowExecutionStatus handle(FlowExecutor executor) throws Exception;

Source Link

Document

Handle some business or processing logic and return a status that can be used to drive a flow to the next State .

Usage

From source file:org.springframework.batch.core.job.flow.support.SimpleFlow.java

/**
 * @see Flow#resume(String, FlowExecutor)
 *///from w  w  w .ja  v  a2  s .  co  m
@Override
public FlowExecution resume(String stateName, FlowExecutor executor) throws FlowExecutionException {

    FlowExecutionStatus status = FlowExecutionStatus.UNKNOWN;
    State state = stateMap.get(stateName);

    if (logger.isDebugEnabled()) {
        logger.debug("Resuming state=" + stateName + " with status=" + status);
    }
    StepExecution stepExecution = null;

    // Terminate if there are no more states
    while (isFlowContinued(state, status, stepExecution)) {
        stateName = state.getName();

        try {
            if (logger.isDebugEnabled()) {
                logger.debug("Handling state=" + stateName);
            }
            status = state.handle(executor);
            stepExecution = executor.getStepExecution();
        } catch (FlowExecutionException e) {
            executor.close(new FlowExecution(stateName, status));
            throw e;
        } catch (Exception e) {
            executor.close(new FlowExecution(stateName, status));
            throw new FlowExecutionException(
                    String.format("Ended flow=%s at state=%s with exception", name, stateName), e);
        }

        if (logger.isDebugEnabled()) {
            logger.debug("Completed state=" + stateName + " with status=" + status);
        }

        state = nextState(stateName, status, stepExecution);
    }

    FlowExecution result = new FlowExecution(stateName, status);
    executor.close(result);
    return result;

}

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