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

Class CompressSpacePageOperation10_2

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.CompressSpacePageOperation

org.apache.derby.impl.store.raw.data.CompressSpacePageOperation10_2

All Implemented Interfaces:

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

public final class CompressSpacePageOperation10_2
extends CompressSpacePageOperation

This class overrides the CompressSpacePageOperation class to write CompressSpaceOperation Log Records that do not support negative values for new_highest_page. No other changes are added to the superclass behavior. This class ensures backword compatibility for Soft upgrades.

See Also:

Serialized Form

Field Summary

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

newHighestPage, num_pages_truncated

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

containerHdl, foundHere, page

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

Constructors

Constructor and Description
CompressSpacePageOperation10_2()
CompressSpacePageOperation10_2(AllocPage allocPage, int highest_page, int num_truncated) Constructors for This class:

Method Summary

Methods

Modifier and Type	Method and Description
int	getTypeFormatId() Return my format identifier.
void	readExternal(java.io.ObjectInput in)
void	writeExternal(java.io.ObjectOutput out) Public Methods of Formatable interface.

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

doMe, restoreMe, toString, undoMe

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

generateUndo

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

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

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, group, needsRedo, releaseResource

Constructor Detail

CompressSpacePageOperation10_2

public CompressSpacePageOperation10_2(AllocPage allocPage,
                              int highest_page,
                              int num_truncated)
                               throws StandardException

Constructors for This class:

Throws:

StandardException

CompressSpacePageOperation10_2

public CompressSpacePageOperation10_2()

Method Detail

writeExternal

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

Public Methods of Formatable interface.

Specified by:

writeExternal in interface java.io.Externalizable

Overrides:

writeExternal in class CompressSpacePageOperation

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

Overrides:

readExternal in class CompressSpacePageOperation

Throws:

java.io.IOException - error reading from log stream

java.lang.ClassNotFoundException - cannot read object from input

getTypeFormatId

public int getTypeFormatId()

Return my format identifier.

Specified by:

getTypeFormatId in interface TypedFormat

Overrides:

getTypeFormatId in class CompressSpacePageOperation

Returns:

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