javax.batch.api.chunk

Class AbstractCheckpointAlgorithm

Contents
  • All Implemented Interfaces:
    CheckpointAlgorithm

    public abstract class AbstractCheckpointAlgorithm
extends Object
implements CheckpointAlgorithm
    The AbstractCheckpointAlgorithm provides default implementations of less commonly implemented methods.

    • Constructor Detail

      • AbstractCheckpointAlgorithm

        public AbstractCheckpointAlgorithm()

    • Method Detail

      • checkpointTimeout

        public int checkpointTimeout()
                      throws Exception
        Override this method if the CheckpointAlgorithm establishes a checkpoint timeout. The default implementation returns 0, which means maximum permissible timeout allowed by runtime environment.
        Specified by:
        checkpointTimeout in interface CheckpointAlgorithm
        Returns:
        the timeout interval to use for the next checkpoint interval
        Throws:
        Exception - (or subclass) if an error occurs.

      • beginCheckpoint

        public void beginCheckpoint()
                     throws Exception
        Override this method for the CheckpointAlgorithm to do something before a checkpoint begins. The default implementation does nothing.
        Specified by:
        beginCheckpoint in interface CheckpointAlgorithm
        Throws:
        Exception - (or subclass) if an error occurs.

      • isReadyToCheckpoint

        public abstract boolean isReadyToCheckpoint()
                                     throws Exception
        Implement logic in this method to decide if a checkpoint should be taken now.
        Specified by:
        isReadyToCheckpoint in interface CheckpointAlgorithm
        Returns:
        boolean indicating whether or not to checkpoint now.
        Throws:
        Exception - (or subclass) if an error occurs.

      • endCheckpoint

        public void endCheckpoint()
                   throws Exception
        Override this method for the CheckpointAlgorithm to do something after a checkpoint ends. The default implementation does nothing.
        Specified by:
        endCheckpoint in interface CheckpointAlgorithm
        Throws:
        Exception - (or subclass) if an error occurs.

Document created the 11/06/2005, last modified the 18/08/2025
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References

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