Class DirectActions

java.lang.Object
org.apache.derby.impl.store.raw.data.DirectActions
All Implemented Interfaces:
PageActions
public class DirectActions extends Object implements PageActions

  • Field Details

  • Constructor Details

    • DirectActions

      public DirectActions()

  • Method Details

    • actionDelete

      public void actionDelete(RawTransaction t, BasePage page, int slot, int recordId, boolean delete, LogicalUndo undo) throws StandardException
      Description copied from interface: PageActions
      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.

      Specified by:
      actionDelete in interface PageActions
      Parameters:
      t - The transaction
      page - the target page
      slot - the slot number of the record
      recordId - the recordID of the record
      delete - set the delete status to this value
      undo - logical undo logic if necessary
      Throws:
      StandardException - Standard Derby error policy
      See Also:

    • 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
      Description copied from interface: PageActions
      Update record at the given slot with this row.


      MT - latched, page is latched when this methods is called.

      Specified by:
      actionUpdate in interface PageActions
      Parameters:
      t - The transaction
      page - the updated page
      slot - the slot number of the record
      recordId - the recordID of the record
      row - The new storable row
      validColumns - the columns that needs to be updated
      realStartColumn - the first column that is updated
      logBuffer - where to prepare the log record
      realSpaceOnPage - ??
      headRowHandle - the record handle of the head row
      Returns:
      the next column to update in the row or, -1 if the update has been completed.
      Throws:
      StandardException - Standard Derby error policy
      See Also:

    • actionPurge

      public void actionPurge(RawTransaction t, BasePage page, int slot, int num_rows, int[] recordIds, boolean needDataLogged) throws StandardException
      Description copied from interface: PageActions
      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.

      Specified by:
      actionPurge in interface PageActions
      Parameters:
      t - The transaction
      slot - the starting slot number of the record
      num_rows - how many rows to purge
      recordIds - the recordIDs of the record (an array of num_rows)
      Throws:
      StandardException - Standard Derby error policy
      See Also:

    • actionUpdateField

      public void actionUpdateField(RawTransaction t, BasePage page, int slot, int recordId, int fieldId, Object newValue, LogicalUndo undo) throws StandardException
      Description copied from interface: PageActions
      Update a field of the record at the given slot with this value.


      MT - latched, page is latched when this methods is called.

      Specified by:
      actionUpdateField in interface PageActions
      Parameters:
      t - The transaction
      slot - the slot number of the record
      recordId - the recordID of the record
      fieldId - the fieldId of the value
      newValue - the new value for the field
      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.
      Throws:
      StandardException - Standard Derby error policy
      See Also:

    • 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
      Description copied from interface: PageActions
      Insert record at the given slot with this recordId.


      MT - latched, page is latched when this methods is called.

      Specified by:
      actionInsert in interface PageActions
      Parameters:
      t - The transaction
      slot - the slot number of the record
      recordId - the recordID of the record
      row - The storable row
      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.
      insertFlag - see Page value for insertFlag
      Throws:
      StandardException - Standard Derby error policy
      See Also:

    • actionCopyRows

      public void actionCopyRows(RawTransaction t, BasePage destPage, BasePage srcPage, int destSlot, int numRows, int srcSlot, int[] recordIds) throws StandardException
      Description copied from interface: PageActions
      Copy num_rows from srcPage into deestpage.

      Longer descrption of routine.

      Specified by:
      actionCopyRows in interface PageActions
      Parameters:
      t - The transaction
      destPage - the destination page
      srcPage - the source page
      destSlot - starting slot # of destination page to copy to
      numRows - the number of rows to be copied
      srcSlot - starting slot number of source page to copy from
      recordIds - an array of record ids to use in the destination page
      Throws:
      StandardException - Standard Derby policy.

    • actionInvalidatePage

      public void actionInvalidatePage(RawTransaction t, BasePage page) throws StandardException
      Description copied from interface: PageActions
      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.

      Specified by:
      actionInvalidatePage in interface PageActions
      Parameters:
      t - The transaction
      page - that page to be invalidated
      Throws:
      StandardException - Standard Derby policy.

    • actionInitPage

      public void actionInitPage(RawTransaction t, BasePage page, int initFlag, int pageFormatId, long pageOffset) throws StandardException
      Description copied from interface: PageActions
      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.

      Specified by:
      actionInitPage in interface PageActions
      Parameters:
      t - The transaction
      page - that page to be initialized
      initFlag - flags set to values in BasePage.INIT_PAGE_* which indicates how the new page is to be initialized.
      pageFormatId - The format Id of the page being initialized.
      Throws:
      StandardException - Standard Derby policy.

    • actionShrinkReservedSpace

      public void actionShrinkReservedSpace(RawTransaction t, BasePage page, int slot, int recordId, int newValue, int oldValue) throws StandardException
      Description copied from interface: PageActions
      Shrink the reserved space to the new value.

      Shrink the reserved space to the new value. This action is not undoable.

      Specified by:
      actionShrinkReservedSpace in interface PageActions
      Parameters:
      t - The transaction
      page - that page to be initialized
      slot - the slot number of the record
      recordId - the recordID of the record
      newValue - the new reserved space value
      Throws:
      StandardException - Unexpected exception from the implementation