PartitionedHandler: How to pass the step name as an input argument ?

Hello,

In the partitioned-batch-job project, the partitioned handler is created as follows:

@Bean
public PartitionHandler partitionHandler(TaskLauncher taskLauncher, JobExplorer jobExplorer, TaskRepository taskRepository) throws Exception {
   ...
  DeployerPartitionHandler partitionHandler = new DeployerPartitionHandler(taskLauncher, jobExplorer, resource, "workerStep");
   ...
  return partitionHandler;
}

How could I pass the step name, here "workerStep", as an input argument. I tried to modify the method like below:

@Bean
public PartitionHandler partitionHandler(TaskLauncher taskLauncher, JobExplorer jobExplorer, TaskRepository taskRepository, String stepName) throws Exception {
   ...
  DeployerPartitionHandler partitionHandler = new DeployerPartitionHandler(taskLauncher, jobExplorer, resource, stepName);
   ...
  return partitionHandler;
}

and I adapted the job/step definition, but it didn't work. I got an exception saying that the method requires a bean of the type String that wasn't found. Then I defined a bean:

@Bean
public String stepName() {
  return new String();
}

and the exception is gone. But I don't think that might be a solution.

Could you please advise ?

Many thanks in advance.

Start with the partitioned-batch-job example and the partitionHandler bean shown in the issue; trace how DeployerPartitionHandler receives its step name and how Spring resolves method parameters. Check the relevant configuration or reference documentation, then document a supported way to supply a non-hard-coded name and verify the example starts successfully.