Field Detail

• containerVersion

  private long containerVersion

• containerId

  protected ContainerKey containerId

• containerHdl

  protected transient RawContainerHandle containerHdl

• foundHere

  private transient boolean foundHere

Constructor Detail

• ContainerBasicOperation

  protected ContainerBasicOperation​(RawContainerHandle hdl)
                             throws StandardException

  Throws:

  StandardException

• ContainerBasicOperation

  public ContainerBasicOperation()

Method Detail

• writeExternal

  public void writeExternal​(java.io.ObjectOutput out)
                     throws java.io.IOException

  Specified by:

  writeExternal in interface java.io.Externalizable

  Throws:

  java.io.IOException

• readExternal

  public void readExternal​(java.io.ObjectInput in)
                    throws java.io.IOException,
                           java.lang.ClassNotFoundException

  Specified by:

  readExternal in interface java.io.Externalizable

  Throws:

  java.io.IOException

  java.lang.ClassNotFoundException

• getPreparedLog

  public ByteArray getPreparedLog()

  the default for prepared log is always null for all the operations that don't have optionalData. If an operation has optional data, the operation need to prepare the optional data for this method. Space Operation has no optional data to write out

  Specified by:

  getPreparedLog in interface Loggable

• releaseResource

  public void releaseResource​(Transaction tran)

  Description copied from interface: Loggable
  Release any resource that was acquired for doMe for rollback or recovery redo. This resource is acquired in either generateUndo (if this is a compensation operation during run time rollback or recovery rollback) or in needsRedo (if this is during recovery redo). The run time transaction context should have all the resource already acquird for run time roll forward, so there is no need to releaseResource during run time roll forward. This method must be safe to be called multiple times.

  Specified by:

  releaseResource in interface Loggable

• group

  public int group()

  A space operation is a RAWSTORE log record

  Specified by:

  group in interface Loggable

• findContainer

  protected RawContainerHandle findContainer​(Transaction tran)
                                      throws StandardException

  Open the container with this segmentId and containerId. This method should only be called if the container has already been created.

  Throws:

  StandardException - the container cannot be found or cannot be opened.

• findContainerForRedoRecovery

  protected RawContainerHandle findContainerForRedoRecovery​(RawTransaction tran)
                                                     throws StandardException

  Subclass (e.g., ContainerOperation) that wishes to do something abou missing container in load tran should override this method to return the recreated container

  Throws:

  StandardException - Standard Derby error policy

• needsRedo

  public boolean needsRedo​(Transaction xact)
                    throws StandardException

  Description copied from interface: Loggable
  Determine if the operation should be reapplied in recovery redo. If redo is needed, acquire any resource that is necessary for the loggable's doMe method. These need to be released in the releaseResource method.

  The sequence of events in recovery redo of a Loggable operation is:

• Get the loggable operation. If loggable.needsRedo is false, then no need to redo this operation.
• If loggable.needsRedo is true, all the resources necessary for applying the doMe is acquired in needsRedo.
• If the loggable is actually a compensation operation, then the logging system will find the undoable operation that needs to be undone, call compensation.setUndoOp with the undoable operation.
• The recovery system then calls loggable.doMe, which re-applies the loggable operation, or re-applies the compensation operation
• The recovery system then calls loggable.releaseResource.