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org.apache.derby.impl.store.raw.data
Class ContainerUndoOperation  

java.lang.Object
  org.apache.derby.impl.store.raw.data.ContainerBasicOperation
      org.apache.derby.impl.store.raw.data.ContainerUndoOperation

All Implemented Interfaces:

org.apache.derby.iapi.store.raw.Compensation, java.io.Externalizable, org.apache.derby.iapi.services.io.Formatable, org.apache.derby.iapi.store.raw.Loggable, java.io.Serializable, org.apache.derby.iapi.services.io.TypedFormat

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public class ContainerUndoOperation

extends ContainerBasicOperation

implements org.apache.derby.iapi.store.raw.Compensation

A Container undo operation rolls back the change of a Container operation

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Field Summary
private  ContainerOperation	undoOp

 

Fields inherited from class org.apache.derby.impl.store.raw.data.ContainerBasicOperation

containerHdl, containerId

 

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

 

Constructor Summary

ContainerUndoOperation()

ContainerUndoOperation(org.apache.derby.iapi.store.raw.data.RawContainerHandle hdl, ContainerOperation op)           Set up a Container undo operation during run time rollback

 

Method Summary
void	doMe(org.apache.derby.iapi.store.raw.Transaction xact, org.apache.derby.iapi.store.raw.log.LogInstant instant, org.apache.derby.iapi.services.io.LimitObjectInput in)           Apply the undo operation, in this implementation of the RawStore, it can only call the undoMe method of undoOp
int	getTypeFormatId()           Return my format identifier.
int	group()           Get the loggable's group value
void	readExternal(java.io.ObjectInput in)           This method restores an object's state by reading in the instance data for the object from the passed in stream.
void	releaseResource(org.apache.derby.iapi.store.raw.Transaction xact)           Release any resource that was acquired for doMe for rollback or recovery redo.
void	setUndoOp(org.apache.derby.iapi.store.raw.Undoable op)           Set up a Container undo operation during recovery redo.
void	writeExternal(java.io.ObjectOutput out)           This method is responsible for writing the instance data of an object to the passed in stream.

 

Methods inherited from class org.apache.derby.impl.store.raw.data.ContainerBasicOperation

findContainer, findContainerForLoadTran, getPreparedLog, needsRedo, toString

 

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

 

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

getPreparedLog, needsRedo

 

Field Detail

undoOp

private transient ContainerOperation undoOp

Constructor Detail

ContainerUndoOperation

public ContainerUndoOperation(org.apache.derby.iapi.store.raw.data.RawContainerHandle hdl,
                              ContainerOperation op)
                       throws org.apache.derby.iapi.error.StandardException

Set up a Container undo operation during run time rollback

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ContainerUndoOperation

public ContainerUndoOperation()

Method Detail

writeExternal

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

Description copied from interface: java.io.Externalizable

This method is responsible for writing the instance data of an object to the passed in stream. Note that this stream is not a subclass of OutputStream, but rather is a class that implements the ObjectOutput interface. That interface provides a number of methods for writing Java data values to a stream.

Not that the implementation of this method must be coordinated with the implementation of readExternal.

Specified by:

writeExternal in interface java.io.Externalizable

Overrides:

writeExternal in class ContainerBasicOperation

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readExternal

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

Description copied from interface: java.io.Externalizable

This method restores an object's state by reading in the instance data for the object from the passed in stream. Note that this stream is not a subclass of InputStream, but rather is a class that implements the ObjectInput interface. That interface provides a mechanism for reading in Java data types from a stream.

Note that this method must be compatible with writeExternal. It must read back the exact same types that were written by that method in the exact order they were written.

If this method needs to read back an object instance, then the class for that object must be found and loaded. If that operation fails, then this method throws a ClassNotFoundException

Specified by:

readExternal in interface java.io.Externalizable

Overrides:

readExternal in class ContainerBasicOperation

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getTypeFormatId

public int getTypeFormatId()

Return my format identifier.

Specified by:

getTypeFormatId in interface org.apache.derby.iapi.services.io.TypedFormat

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setUndoOp

public void setUndoOp(org.apache.derby.iapi.store.raw.Undoable op)

Set up a Container undo operation during recovery redo.

Specified by:

setUndoOp in interface org.apache.derby.iapi.store.raw.Compensation

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doMe

public final void doMe(org.apache.derby.iapi.store.raw.Transaction xact,
                       org.apache.derby.iapi.store.raw.log.LogInstant instant,
                       org.apache.derby.iapi.services.io.LimitObjectInput in)
                throws org.apache.derby.iapi.error.StandardException,
                       java.io.IOException

Apply the undo operation, in this implementation of the RawStore, it can only call the undoMe method of undoOp

Specified by:

doMe in interface org.apache.derby.iapi.store.raw.Loggable

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releaseResource

public void releaseResource(org.apache.derby.iapi.store.raw.Transaction xact)

Description copied from interface: org.apache.derby.iapi.store.raw.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 org.apache.derby.iapi.store.raw.Loggable

Overrides:

releaseResource in class ContainerBasicOperation

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group

public int group()

Description copied from interface: org.apache.derby.iapi.store.raw.Loggable

Get the loggable's group value

Specified by:

group in interface org.apache.derby.iapi.store.raw.Loggable

Overrides:

group in class ContainerBasicOperation

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Overview  Package   Class  Use  Deprecated  Index
Home >> All >> org >> apache >> derby >> impl >> store >> raw >> [ data overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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