Class InvalidatePageOperation

java.lang.Object

org.apache.derby.impl.store.raw.data.PageBasicOperation

org.apache.derby.impl.store.raw.data.PhysicalPageOperation

org.apache.derby.impl.store.raw.data.InvalidatePageOperation

All Implemented Interfaces:

Externalizable, Serializable, Formatable, TypedFormat, Loggable, RePreparable, Undoable

public final class InvalidatePageOperation
extends PhysicalPageOperation

Represents invalidating a page due to deallocation. This operation invalidates the page that is being deallocated, as opposed to deallocatePage that happens on the alloc page.

See Also:

• Serialized Form

Field Summary

Fields inherited from class PageBasicOperation

containerHdl, foundHere, page

Fields inherited from interface Loggable

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

Constructor Summary

Constructors

Constructor	Description
InvalidatePageOperation()
InvalidatePageOperation(BasePage page)

Method Summary

Modifier and Type	Method	Description
void	doMe(Transaction xact, LogInstant instant, LimitObjectInput in)	Mark the page as being invalidated
int	getTypeFormatId()	Return my format identifier.
void	readExternal(ObjectInput in)	Read this in
void	restoreMe(Transaction xact, BasePage undoPage, LogInstant CLRInstant, LimitObjectInput in)	restore the before image of the page
String	toString()
void	undoMe(Transaction xact, BasePage undoPage, LogInstant CLRInstant, LimitObjectInput in)	Mark the page as being valid
void	writeExternal(ObjectOutput out)

Methods inherited from class PhysicalPageOperation

generateUndo

Methods inherited from class PageBasicOperation

findpage, getPage, getPageForRedoRecovery, getPageId, getPageVersion, getPreparedLog, group, needsRedo, reclaimPrepareLocks, releaseResource, resetPageNumber

Methods inherited from class Object

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

Methods inherited from interface Loggable

getPreparedLog, group, needsRedo, releaseResource

Constructor Details

InvalidatePageOperation

InvalidatePageOperation(BasePage page)

InvalidatePageOperation

public InvalidatePageOperation()

Method Details

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Specified by:

writeExternal in interface Externalizable

Overrides:

writeExternal in class PageBasicOperation

Throws:

IOException

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
ClassNotFoundException

Read this in

Specified by:

readExternal in interface Externalizable

Overrides:

readExternal in class PageBasicOperation

Throws:

IOException - error reading from log stream

ClassNotFoundException - log stream corrupted

getTypeFormatId

public int getTypeFormatId()

Return my format identifier.

Returns:

The identifier. (A UUID stuffed in an array of 16 bytes).

doMe

public void doMe(Transaction xact,
 LogInstant instant,
 LimitObjectInput in)
          throws StandardException,
IOException

Mark the page as being invalidated

Parameters:

xact - the Transaction

instant - the log instant of this operation

in - optional data

Throws:

IOException - Can be thrown by any of the methods of ObjectInput.

StandardException - Standard Derby policy.

See Also:

• Loggable.doMe(Transaction, LogInstant, LimitObjectInput)

undoMe

public void undoMe(Transaction xact,
 BasePage undoPage,
 LogInstant CLRInstant,
 LimitObjectInput in)
            throws StandardException,
IOException

Mark the page as being valid

Specified by:

undoMe in class PhysicalPageOperation

Parameters:

xact - the Transaction doing the rollback

undoPage - the page to rollback changes on

CLRInstant - the log instant of this (PageUndo) operation

in - optional data for the rollback operation

Throws:

StandardException - Thrown by methods I call

IOException - Thrown by methods I call

See Also:

• PhysicalPageOperation.undoMe(Transaction, BasePage, LogInstant, LimitObjectInput)

restoreMe

public void restoreMe(Transaction xact,
 BasePage undoPage,
 LogInstant CLRInstant,
 LimitObjectInput in)
               throws StandardException,
IOException

restore the before image of the page

Specified by:

restoreMe in class PageBasicOperation

Parameters:

xact - the Transaction doing the rollback

undoPage - the page to rollback changes on

CLRInstant - the log instant of this (PageUndo) operation

in - optional data for the rollback operation

Throws:

StandardException - Standard Derby Error Policy

IOException - problem reading the complete log record from the input stream

toString

public String toString()

Overrides:

toString in class PageBasicOperation