接口 StepExecutionSplitter

方法详细资料

• getStepName

  java.lang.String getStepName()

  The name of the step configuration that will be executed remotely. Remote workers are going to execute a the same step for each execution context in the partition.

  返回:

  the name of the step that will execute the business logic

• split

  java.util.Set<StepExecution> split​(StepExecution stepExecution,
                                     int gridSize)
                              throws JobExecutionException

  Partition the provided StepExecution into a set of parallel executable instances with the same parent JobExecution. The grid size will be treated as a hint for the size of the collection to be returned. It may or may not correspond to the physical size of an execution grid.
  
  On a restart clients of the StepExecutionSplitter should expect it to reconstitute the state of the last failed execution and only return those executions that need to be restarted. Thus the grid size hint will be ignored on a restart.

  参数:

  stepExecution - the StepExecution to be partitioned.

  gridSize - a hint for the splitter if the size of the grid is known

  返回:

  a set of StepExecution instances for remote processing

  抛出:

  JobExecutionException - if the split cannot be made