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Encapsulate a transaction
Source position: db.pas line 1540
type TDBTransaction = class(TComponent) |
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protected |
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procedure SetDatabase(); virtual; |
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procedure CloseTrans; |
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procedure openTrans; |
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procedure CheckDatabase; |
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procedure CheckActive; |
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procedure CheckInactive; |
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procedure EndTransaction; virtual; abstract; |
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procedure StartTransaction; virtual; abstract; |
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procedure InternalHandleException; virtual; |
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procedure Loaded; override; |
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public |
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constructor Create(); override; |
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Transaction property |
destructor destroy; override; |
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Remove a TDBTransaction instance from memory. |
procedure CloseDataSets; |
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Close all connected datasets |
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Database this transaction is connected to |
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published |
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property Active: Boolean; [rw] |
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Is the transaction active or not |
end; |
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Encapsulate a transaction |
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TDBTransaction encapsulates a SQL transaction. It is an abstract class, and should be used by component creators that wish to encapsulate transactions in a class. The TDBTransaction class offers functionality to refer to a TDatabase instance, and to keep track of TDataset instances which are connected to the transaction.
TDBDatabase |
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Base class for records-based data-access |
| lazarus-ccr.sourceforge.net |