CompressSpacePageOperation10_2 (Apache Derby V10.14 Internals)

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 backward 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 interface org.apache.derby.iapi.store.raw.Loggable
  ABORT, BI_LOG, CHECKSUM, COMMIT, COMPENSATION, FILE_RESOURCE, FIRST, LAST, PREPARE, RAWSTORE, XA_NEEDLOCK
- Fields inherited from class org.apache.derby.impl.store.raw.data.PageBasicOperation
  containerHdl, foundHere, page

Constructor Summary

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

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	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 interface org.apache.derby.iapi.store.raw.Loggable
getPreparedLog, group, needsRedo, releaseResource

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

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

- Constructor Detail
  - CompressSpacePageOperation10_2
```
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).

Class CompressSpacePageOperation10_2

Field Summary

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

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

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

Constructor Summary

Method Summary

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

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

Methods inherited from class java.lang.Object

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

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

Constructor Detail

CompressSpacePageOperation10_2

CompressSpacePageOperation10_2

Method Detail

writeExternal

readExternal

getTypeFormatId