Package javax.batch.api.partition

Interface PartitionCollector

public interface PartitionCollector
PartitionCollector provides a way to pass data from individual partitions to a single point of control running on the step's parent thread. The PartitionAnalyzer is used to receive and process this data.

  • Method Summary

    Modifier and Type
    Method
    Description
    Serializable
    collectPartitionData()
    The collectPartitionData method receives control periodically during partition processing.

  • Method Details

    • collectPartitionData

      Serializable collectPartitionData() throws Exception

      The collectPartitionData method receives control periodically during partition processing. This method receives control on each thread processing a partition as follows:

      1. for a chunk type step, it receives control after every chunk checkpoint and then one last time at the end of the partition;
      2. for a batchlet type step, it receives control once at the end of the batchlet.

      Note the collector is not called if the partition terminates due to an unhandled exception.

      Returns:
      an Serializable object to pass to the PartitionAnalyzer.
      Throws:
      Exception - is thrown if an error occurs.