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Implements a uni-directional index
Source position: bufdataset.pas line 245
type TUniDirectionalBufIndex = class(TBufIndex) |
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public |
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function ScrollBackward; override; |
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function ScrollForward; override; |
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function GetCurrent; override; |
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function ScrollFirst; override; |
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procedure ScrollLast; override; |
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procedure SetToFirstRecord; override; |
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procedure SetToLastRecord; override; |
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procedure StoreCurrentRecord; override; |
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procedure RestoreCurrentRecord; override; |
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function CanScrollForward; override; |
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procedure DoScrollForward; override; |
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procedure StoreCurrentRecIntoBookmark(); override; |
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procedure StoreSpareRecIntoBookmark(); override; |
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procedure GotoBookmark(); override; |
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procedure InitialiseIndex; override; |
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procedure InitialiseSpareRecord(); override; |
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procedure ReleaseSpareRecord; override; |
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procedure BeginUpdate; override; |
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procedure AddRecord; override; |
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procedure InsertRecordBeforeCurrentRecord(); override; |
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procedure RemoveRecordFromIndex(); override; |
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procedure OrderCurrentRecord; override; |
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procedure EndUpdate; override; |
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end; |
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Implements a uni-directional index |
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Defines the interface used to implement indexes in TBufDataset |
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TUniDirectionalBufIndex is a TBufIndex descendant that implements a uni-directional index. TUniDirectionalBufIndex does not require bookmarks used for navigation; it is uni-directional and the next record is always available in the buffers allocated for the index.
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Defines the interface used to implement indexes in TBufDataset |