Class ChainAllocPageOperation
- 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.ChainAllocPageOperation
-
- All Implemented Interfaces:
java.io.Externalizable
,java.io.Serializable
,Formatable
,TypedFormat
,Loggable
,RePreparable
,Undoable
public final class ChainAllocPageOperation extends PhysicalPageOperation
- See Also:
- Serialized Form
-
-
Field Summary
Fields Modifier and Type Field Description protected long
newAllocPageNum
protected long
newAllocPageOffset
-
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 Description ChainAllocPageOperation()
ChainAllocPageOperation(AllocPage allocPage, long pageNumber, long pageOffset)
-
Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
doMe(Transaction tran, LogInstant instant, LimitObjectInput in)
Link the next alloc page into the page chainint
getTypeFormatId()
Return my format identifier.void
readExternal(java.io.ObjectInput in)
void
restoreMe(Transaction xact, BasePage undoPage, LogInstant CLRinstant, LimitObjectInput in)
Undo the change indicated by this log operation and optional data.java.lang.String
toString()
debugvoid
undoMe(Transaction xact, BasePage undoPage, LogInstant CLRInstant, LimitObjectInput in)
Unlink the next alloc page from the page chainvoid
writeExternal(java.io.ObjectOutput out)
-
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
-
ChainAllocPageOperation
ChainAllocPageOperation(AllocPage allocPage, long pageNumber, long pageOffset) throws StandardException
- Throws:
StandardException
-
ChainAllocPageOperation
public ChainAllocPageOperation()
-
-
Method Detail
-
writeExternal
public void writeExternal(java.io.ObjectOutput out) throws java.io.IOException
- Specified by:
writeExternal
in interfacejava.io.Externalizable
- Overrides:
writeExternal
in classPageBasicOperation
- Throws:
java.io.IOException
-
readExternal
public void readExternal(java.io.ObjectInput in) throws java.io.IOException, java.lang.ClassNotFoundException
- Specified by:
readExternal
in interfacejava.io.Externalizable
- Overrides:
readExternal
in classPageBasicOperation
- Throws:
java.io.IOException
- error reading from log streamjava.lang.ClassNotFoundException
- cannot read object from input
-
getTypeFormatId
public int getTypeFormatId()
Return my format identifier.- Returns:
- The identifier. (A UUID stuffed in an array of 16 bytes).
-
doMe
public final void doMe(Transaction tran, LogInstant instant, LimitObjectInput in) throws StandardException
Link the next alloc page into the page chain- Parameters:
tran
- the Transactioninstant
- the log instant of this operationin
- optional data- Throws:
StandardException
- container Handle is not active
-
undoMe
public void undoMe(Transaction xact, BasePage undoPage, LogInstant CLRInstant, LimitObjectInput in) throws StandardException
Unlink the next alloc page from the page chain- Specified by:
undoMe
in classPhysicalPageOperation
- Parameters:
xact
- the Transaction doing the rollbackundoPage
- the page to rollback changes onCLRInstant
- the log instant of this (PageUndo) operationin
- optional data for the rollback operation- Throws:
StandardException
- Thrown by methods I call- See Also:
PhysicalPageOperation.undoMe(org.apache.derby.iapi.store.raw.Transaction, org.apache.derby.impl.store.raw.data.BasePage, org.apache.derby.iapi.store.raw.log.LogInstant, org.apache.derby.iapi.services.io.LimitObjectInput)
-
restoreMe
public void restoreMe(Transaction xact, BasePage undoPage, LogInstant CLRinstant, LimitObjectInput in)
Description copied from class:PageBasicOperation
Undo the change indicated by this log operation and optional data. The page the undo should apply to is the latched undoPage. The undoPage must be the same page as the doMe page and the undo operation must restore the before image of the row that changed.
this can only be used under special circumstances: namely table level locking, and no internal or nested transaction, and all operations are rollec back with restoreMe instead of undoMe.
This method is here to support BeforeImageLogging- Specified by:
restoreMe
in classPageBasicOperation
- Parameters:
xact
- the Transaction doing the rollbackundoPage
- the page to rollback changes onCLRinstant
- the log instant of this (PageUndo) operationin
- optional data for the rollback operation
-
toString
public java.lang.String toString()
debug- Overrides:
toString
in classPageBasicOperation
-
-