Package org.springframework.batch.core.step.builder

Class StepBuilder

java.lang.Object
org.springframework.batch.core.step.builder.StepBuilderHelper<StepBuilder>
org.springframework.batch.core.step.builder.StepBuilder
Direct Known Subclasses:
RemotePartitioningWorkerStepBuilder
public class StepBuilder extends StepBuilderHelper<StepBuilder>
Convenient entry point for building all kinds of steps. Use this as a factory for fluent builders of any step.
Since:
2.2
Author:
Dave Syer

  • Constructor Details

    • StepBuilder

      public StepBuilder(String name)
      Initialize a step builder for a step with the given name.
      Parameters:
      name - the name of the step

  • Method Details

    • tasklet

      public TaskletStepBuilder tasklet(Tasklet tasklet)
      Build a step with a custom tasklet, not necessarily item processing.
      Parameters:
      tasklet - a tasklet
      Returns:
      a TaskletStepBuilder

    • chunk

      public <I, O> SimpleStepBuilder<I,O> chunk(int chunkSize)
      Build a step that processes items in chunks with the size provided. To extend the step to being fault tolerant, call the SimpleStepBuilder.faultTolerant() method on the builder. In most cases you will want to parameterize your call to this method, to preserve the type safety of your readers and writers, e.g. 
       new StepBuilder("step1").<Order, Ledger> chunk(100).reader(new OrderReader()).writer(new LedgerWriter())
 // ... etc.
      Type Parameters:
      I - the type of item to be processed as input
      O - the type of item to be output
      Parameters:
      chunkSize - the chunk size (commit interval)
      Returns:
      a SimpleStepBuilder

    • chunk

      public <I, O> SimpleStepBuilder<I,O> chunk(CompletionPolicy completionPolicy)
      Build a step that processes items in chunks with the completion policy provided. To extend the step to being fault tolerant, call the SimpleStepBuilder.faultTolerant() method on the builder. In most cases you will want to parameterize your call to this method, to preserve the type safety of your readers and writers, e.g. 
       new StepBuilder("step1").<Order, Ledger> chunk(100).reader(new OrderReader()).writer(new LedgerWriter())
 // ... etc.
      Type Parameters:
      I - the type of item to be processed as input
      O - the type of item to be output *
      Parameters:
      completionPolicy - the completion policy to use to control chunk processing
      Returns:
      a SimpleStepBuilder

    • partitioner

      public PartitionStepBuilder partitioner(String stepName, Partitioner partitioner)
      Create a partition step builder for a remote (or local) step.
      Parameters:
      stepName - the name of the remote or delegate step
      partitioner - a partitioner to be used to construct new step executions
      Returns:
      a PartitionStepBuilder

    • partitioner

      public PartitionStepBuilder partitioner(Step step)
      Create a partition step builder for a remote (or local) step.
      Parameters:
      step - the step to execute in parallel
      Returns:
      a PartitionStepBuilder

    • job

      public JobStepBuilder job(Job job)
      Create a new step builder that will execute a job.
      Parameters:
      job - a job to execute
      Returns:
      a JobStepBuilder

    • flow

      public FlowStepBuilder flow(Flow flow)
      Create a new step builder that will execute a flow.
      Parameters:
      flow - a flow to execute
      Returns:
      a FlowStepBuilder