Class UpdateFieldOperation

  • All Implemented Interfaces:
    java.io.Externalizable, java.io.Serializable, Formatable, TypedFormat, Loggable, LogicalUndoable, RePreparable, Undoable

    public final class UpdateFieldOperation
    extends LogicalPageOperation
    Represents the update of a particular field of a row on a page.
    See Also:
    Serialized Form
    Format IDLOGOP_UPDATE_FIELD the formatId is written by FormatIdOutputStream when this object is written out by writeObject
    Purpose
    update a field of a record on the page
    Upgrade
    Disk LayoutLogicalPageOperation the super class doMeSlot(CompressedInt) the slot of the record being updated fieldId(CompressedInt) the recordId of the record being updated OptionalData The after image of the column (length included), follow by the old image of the record (length included). If this is logically undoable, then the before image of the entire row is logged