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

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

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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.

Field Summary


 


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


InvalidatePageOperation()



           


InvalidatePageOperation(BasePage page)



           


 






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)



          Mark the page as being invalidated



 int
getTypeFormatId()



          Return my format identifier.



 void
readExternal(java.io.ObjectInput in)



          Read this in



 void
restoreMe(org.apache.derby.iapi.store.raw.Transaction xact,
          BasePage undoPage,
          org.apache.derby.iapi.store.raw.log.LogInstant CLRInstant,
          org.apache.derby.iapi.services.io.LimitObjectInput in)



          restore the before image of the page



 java.lang.String
toString()



          Convert this Object to a human-readable String.



 void
undoMe(org.apache.derby.iapi.store.raw.Transaction xact,
       BasePage undoPage,
       org.apache.derby.iapi.store.raw.log.LogInstant CLRInstant,
       org.apache.derby.iapi.services.io.LimitObjectInput in)



          Mark the page as being valid



 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.PhysicalPageOperation


generateUndo


 


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


findpage, getPage, getPageForLoadTran, 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




InvalidatePageOperation
public InvalidatePageOperation(BasePage page)





InvalidatePageOperation
public InvalidatePageOperation()









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 PageBasicOperation








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

Read this in


Specified by:
readExternal in interface java.io.Externalizable
Overrides:
readExternal in class PageBasicOperation








getTypeFormatId
public int getTypeFormatId()

Return my format identifier.








doMe
public 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

Mark the page as being invalidated








undoMe
public void undoMe(org.apache.derby.iapi.store.raw.Transaction xact,
                   BasePage undoPage,
                   org.apache.derby.iapi.store.raw.log.LogInstant CLRInstant,
                   org.apache.derby.iapi.services.io.LimitObjectInput in)
            throws org.apache.derby.iapi.error.StandardException,
                   java.io.IOException

Mark the page as being valid


Specified by:
undoMe in class PhysicalPageOperation








restoreMe
public void restoreMe(org.apache.derby.iapi.store.raw.Transaction xact,
                      BasePage undoPage,
                      org.apache.derby.iapi.store.raw.log.LogInstant CLRInstant,
                      org.apache.derby.iapi.services.io.LimitObjectInput in)
               throws org.apache.derby.iapi.error.StandardException,
                      java.io.IOException

restore the before image of the page


Specified by:
restoreMe in class PageBasicOperation








toString
public java.lang.String toString()

Description copied from class: java.lang.Object
Convert this Object to a human-readable String.
 There are no limits placed on how long this String
 should be or what it should contain.  We suggest you
 make it as intuitive as possible to be able to place
 it into System.out.println() 55 
 and such.

 
It is typical, but not required, to ensure that this method
 never completes abruptly with a java.lang.RuntimeException.

 
This method will be called when performing string
 concatenation with this object.  If the result is
 null, string concatenation will instead
 use "null".

 
The default implementation returns
 getClass().getName() + "@" +
      Integer.toHexString(hashCode()).


Overrides:
toString in class PageBasicOperation














  

  
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