| org.apache.derby.impl.store.raw.data.PageActions
All known Subclasses: org.apache.derby.impl.store.raw.data.LoggableActions, org.apache.derby.impl.store.raw.data.DirectActions,
| PageActions | | public interface PageActions (Code) | | |
| Method Summary | |
| public void | actionCopyRows(RawTransaction t, BasePage destPage, BasePage srcPage, int destSlot, int numRows, int srcSlot, int[] recordIds)
Copy num_rows from srcPage into deestpage. | | public void | actionDelete(RawTransaction t, BasePage page, int slot, int recordId, boolean delete, LogicalUndo undo)
Set the Delete status of the record at the given slot. | | public void | actionInitPage(RawTransaction t, BasePage page, int initFlag, int pageFormatId, long pageOffset)
Initialize the page due to allocation. | | public int | actionInsert(RawTransaction t, BasePage page, int slot, int recordId, Object[] row, FormatableBitSet validColumns, LogicalUndo undo, byte insertFlag, int startColumn, boolean isLongColumn, int realStartColumn, DynamicByteArrayOutputStream logBuffer, int realSpaceOnPage, int overflowThreshold)
Insert record at the given slot with this recordId. | | public void | actionInvalidatePage(RawTransaction t, BasePage page)
Invalidate the page due to deallocation.
Short one line description of routine.
Invalidate the page due to deallocation - this is the action on the page
that is being deallocated as opposed to the action on the allocation
page.
Parameters:
t - The transaction
Parameters:
page - that page to be invalidated
exception:
StandardException - Standard Cloudscape policy. | | public void | actionPurge(RawTransaction t, BasePage page, int slot, int num_rows, int[] recordIds, boolean logData)
Purge the record at the given slot. | | public void | actionShrinkReservedSpace(RawTransaction t, BasePage page, int slot, int recordId, int newValue, int oldValue)
Shrink the reserved space to the new value. | | public int | actionUpdate(RawTransaction t, BasePage page, int slot, int recordId, Object[] row, FormatableBitSet validColumns, int realStartColumn, DynamicByteArrayOutputStream logBuffer, int realSpaceOnPage, RecordHandle headRowHandle)
Update record at the given slot with this row. | | public void | actionUpdateField(RawTransaction t, BasePage page, int slot, int recordId, int fieldId, Object newValue, LogicalUndo undo)
Update a field of the record at the given slot with this value.
MT - latched, page is latched when this methods is called.
Parameters:
t - The transaction
Parameters:
slot - the slot number of the record
Parameters:
recordId - the recordID of the record
Parameters:
fieldId - the fieldId of the value
Parameters:
newValue - the new value for the field
Parameters:
undo - if logical undo may be necessary, a function pointer to the access code where the logical undo logic resides. |
| actionCopyRows | | public void actionCopyRows(RawTransaction t, BasePage destPage, BasePage srcPage, int destSlot, int numRows, int srcSlot, int[] recordIds) throws StandardException(Code) | | Copy num_rows from srcPage into deestpage.
Longer descrption of routine.
Parameters:
t - The transaction
Parameters:
destPage - the destination page
Parameters:
srcPage - the source page
Parameters:
destSlot - starting slot # of destination page to copy to
Parameters:
numRows - the number of rows to be copied
Parameters:
srcSlot - starting slot number of source page to copy from
Parameters:
recordIds - an array of record ids to use in the destination page
exception:
StandardException - Standard Cloudscape policy. |
| actionDelete | | public void actionDelete(RawTransaction t, BasePage page, int slot, int recordId, boolean delete, LogicalUndo undo) throws StandardException(Code) | | Set the Delete status of the record at the given slot.
Subclass that implements this method has to call
BasePage.setDeleteStatus to update the delete status on the in-memory
slot table.
MT - latched, page is latched when this methods is called.
Parameters:
t - The transaction
Parameters:
page - the target page
Parameters:
slot - the slot number of the record
Parameters:
recordId - the recordID of the record
Parameters:
delete - set the delete status to this value
Parameters:
undo - logical undo logic if necessary
exception:
StandardException - Standard Cloudscape error policy
See Also: org.apache.derby.iapi.store.raw.Page.deleteAtSlot |
| actionInitPage | | public void actionInitPage(RawTransaction t, BasePage page, int initFlag, int pageFormatId, long pageOffset) throws StandardException(Code) | | Initialize the page due to allocation.
Initialize the page due to allocation - this page could be brand new or
it could be being re-allocated.
Parameters:
t - The transaction
Parameters:
page - that page to be initialized
Parameters:
initFlag - flags set to values in BasePage.INIT_PAGE_* which indicates how the new page is to beinitialized.
Parameters:
pageFormatId - The format Id of the page being initialized.
exception:
StandardException - Standard Cloudscape policy. |
| actionInsert | | public int actionInsert(RawTransaction t, BasePage page, int slot, int recordId, Object[] row, FormatableBitSet validColumns, LogicalUndo undo, byte insertFlag, int startColumn, boolean isLongColumn, int realStartColumn, DynamicByteArrayOutputStream logBuffer, int realSpaceOnPage, int overflowThreshold) throws StandardException(Code) | | Insert record at the given slot with this recordId.
MT - latched, page is latched when this methods is called.
Parameters:
t - The transaction
Parameters:
slot - the slot number of the record
Parameters:
recordId - the recordID of the record
Parameters:
row - The storable row
Parameters:
undo - if logical undo may be necessary, a function pointer to the access code where the logical undo logic resides. Null if logical undo is not necessary.
Parameters:
insertFlag - see Page value for insertFlag
exception:
StandardException - Standard Cloudscape error policy
See Also: org.apache.derby.iapi.store.raw.Page.insertAtSlot |
| actionInvalidatePage | | public void actionInvalidatePage(RawTransaction t, BasePage page) throws StandardException(Code) | | Invalidate the page due to deallocation.
Short one line description of routine.
Invalidate the page due to deallocation - this is the action on the page
that is being deallocated as opposed to the action on the allocation
page.
Parameters:
t - The transaction
Parameters:
page - that page to be invalidated
exception:
StandardException - Standard Cloudscape policy. |
| actionPurge | | public void actionPurge(RawTransaction t, BasePage page, int slot, int num_rows, int[] recordIds, boolean logData) throws StandardException(Code) | | Purge the record at the given slot.
Subclass that implements this method has to remove the slot from the
base page in-memory slot table (removeAndShiftDown).
MT - latched, page is latched when this methods is called.
Parameters:
t - The transaction
Parameters:
slot - the starting slot number of the record
Parameters:
num_rows - how many rows to purge
Parameters:
recordIds - the recordIDs of the record (an array of num_rows)
exception:
StandardException - Standard Cloudscape error policy
See Also: org.apache.derby.iapi.store.raw.Page.purgeAtSlot |
| actionShrinkReservedSpace | | public void actionShrinkReservedSpace(RawTransaction t, BasePage page, int slot, int recordId, int newValue, int oldValue) throws StandardException(Code) | | Shrink the reserved space to the new value.
Shrink the reserved space to the new value. This action is not undoable.
Parameters:
t - The transaction
Parameters:
page - that page to be initialized
Parameters:
slot - the slot number of the record
Parameters:
recordId - the recordID of the record
Parameters:
newValue - the new reserved space value
exception:
StandardException - Unexpected exception from the implementation |
| actionUpdate | | public int actionUpdate(RawTransaction t, BasePage page, int slot, int recordId, Object[] row, FormatableBitSet validColumns, int realStartColumn, DynamicByteArrayOutputStream logBuffer, int realSpaceOnPage, RecordHandle headRowHandle) throws StandardException(Code) | | Update record at the given slot with this row.
MT - latched, page is latched when this methods is called.
Parameters:
t - The transaction
Parameters:
page - the updated page
Parameters:
slot - the slot number of the record
Parameters:
recordId - the recordID of the record
Parameters:
row - The new storable row
Parameters:
validColumns - the columns that needs to be updated
Parameters:
realStartColumn - the first column that is updated
Parameters:
logBuffer - where to prepare the log record
Parameters:
realSpaceOnPage - ??
Parameters:
headRowHandle - the record handle of the head row the next column to update in the row or,-1 if the update has been completed.
exception:
StandardException - Standard Cloudscape error policy
See Also: org.apache.derby.iapi.store.raw.Page.updateAtSlot |
| actionUpdateField | | public void actionUpdateField(RawTransaction t, BasePage page, int slot, int recordId, int fieldId, Object newValue, LogicalUndo undo) throws StandardException(Code) | | Update a field of the record at the given slot with this value.
MT - latched, page is latched when this methods is called.
Parameters:
t - The transaction
Parameters:
slot - the slot number of the record
Parameters:
recordId - the recordID of the record
Parameters:
fieldId - the fieldId of the value
Parameters:
newValue - the new value for the field
Parameters:
undo - if logical undo may be necessary, a function pointer to the access code where the logical undo logic resides. Null if logical undo is not necessary.
exception:
StandardException - Standard Cloudscape error policy
See Also: org.apache.derby.iapi.store.raw.Page.updateFieldAtSlot |
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