org.apache.derby.iapi.store.raw

Interface Compensation

All Superinterfaces:

java.io.Externalizable, Formatable, Loggable, java.io.Serializable, TypedFormat

All Known Implementing Classes:

ContainerUndoOperation, EncryptContainerUndoOperation, LogicalUndoOperation, PhysicalUndoOperation

public interface Compensation
extends Loggable

A Compensation operation can compensate for the action of a log operation. A Compensation operation itself is not undo-able, i.e., it is loggable but not undoable. A Compensation operation is generated by the logging system when it calls undoable.generateUndo(). GenerateUndo should be the only way a compensation operation can be made.

See Also:

Undoable.generateUndo(org.apache.derby.iapi.store.raw.Transaction, org.apache.derby.iapi.services.io.LimitObjectInput)

Field Summary

Fields inherited from interface org.apache.derby.iapi.store.raw.Loggable

ABORT, BI_LOG, CHECKSUM, COMMIT, COMPENSATION, FILE_RESOURCE, FIRST, LAST, PREPARE, RAWSTORE, XA_NEEDLOCK

Method Summary

Modifier and Type	Method and Description
void	setUndoOp(Undoable op) Set up the undoable operation during recovery redo.

Methods inherited from interface org.apache.derby.iapi.store.raw.Loggable

doMe, getPreparedLog, group, needsRedo, releaseResource

Methods inherited from interface java.io.Externalizable

readExternal, writeExternal

Methods inherited from interface org.apache.derby.iapi.services.io.TypedFormat

getTypeFormatId

Method Detail

setUndoOp

void setUndoOp(Undoable op)

Set up the undoable operation during recovery redo.

Parameters:

op - the Undoable operation

See Also:

Loggable.needsRedo(org.apache.derby.iapi.store.raw.Transaction)