All Known Implementing Classes:
JobFlowExecutor, JsrFlowExecutor
```
public interface FlowExecutor
```
Context and execution strategy for FlowJob to allow it to delegate its execution step by step.
Since:
2.0
Author:
Dave Syer, Mahmoud Ben Hassine

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`abandonStepExecution()`	Handle any status changes that might be needed at the start of a state.
`void`	`addExitStatus(java.lang.String code)`
`void`	`close(FlowExecution result)`	Chance to clean up resources at the end of a flow (whether it completed successfully or not).
`java.lang.String`	`executeStep(Step step)`
`JobExecution`	`getJobExecution()`
`StepExecution`	`getStepExecution()`
`boolean`	`isRestart()`
`void`	`updateJobExecutionStatus(FlowExecutionStatus status)`	Handle any status changes that might be needed in the `JobExecution`.

- Method Detail
  - executeStep
```
java.lang.String executeStep(Step step)
                      throws JobInterruptedException,
                             JobRestartException,
                             StartLimitExceededException
```
    Parameters:
    step - a Step to execute
    Returns:
    the exit status that drives the surrounding Flow
    Throws:
    StartLimitExceededException - thrown if start limit is exceeded.
    JobRestartException - thrown if job restart is not allowed.
    JobInterruptedException - thrown if job was interrupted.
  - getJobExecution
```
JobExecution getJobExecution()
```
    Returns:
    the current JobExecution
  - getStepExecution
```
@Nullable
StepExecution getStepExecution()
```
    Returns:
    the latest StepExecution or null if there is none
  - close
```
void close(FlowExecution result)
```
    Chance to clean up resources at the end of a flow (whether it completed successfully or not).
    Parameters:
    result - the final FlowExecution
  - abandonStepExecution
```
void abandonStepExecution()
```
    Handle any status changes that might be needed at the start of a state.
  - updateJobExecutionStatus
```
void updateJobExecutionStatus(FlowExecutionStatus status)
```
    Handle any status changes that might be needed in the JobExecution.
    Parameters:
    status - status to update the JobExecution to.
  - isRestart
```
boolean isRestart()
```
    Returns:
    true if the flow is at the beginning of a restart
  - addExitStatus
```
void addExitStatus(java.lang.String code)
```
    Parameters:
    code - the label for the exit status when a flow or sub-flow ends

Interface FlowExecutor

Method Summary

Method Detail

executeStep

getJobExecution

getStepExecution

close

abandonStepExecution

updateJobExecutionStatus

isRestart

addExitStatus