Class AbstractCheckpointAlgorithm

java.lang.Object
javax.batch.api.chunk.AbstractCheckpointAlgorithm
All Implemented Interfaces:
CheckpointAlgorithm

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

    • AbstractCheckpointAlgorithm

      public AbstractCheckpointAlgorithm()
  • Method Details

    • 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.