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-- File: DDF_Transaction.cdl
-- -------------------
-- Author: DAUTRY Philippe
-- <fid@fox.paris1.matra-dtv.fr>
---Copyright: MATRA DATAVISION 1997
---Version: 0.0
---History: Version Date Purpose
-- 0.0 Nov 4 1997 Creation
class Transaction from DDF
inherits TShared from MMgt
---Purpose: This class encapsulates TDF_Transaction.
uses
Data from TDF,
Delta from TDF,
Transaction from TDF
raises
DomainError, NullObject from Standard
is
Create
returns Transaction from DDF;
---Purpose: Creates an empty transaction context, unable to be
-- opened.
Create(aDF : Data from TDF)
returns Transaction from DDF;
---Purpose: Creates a transaction context on <aDF>, ready to
-- be opened.
Open(me : mutable)
returns Integer from Standard;
---Purpose: If not yet done, opens a new transaction on
-- <myDF>. Returns the index of the just opened
-- transaction.
--
-- It raises DomainError if the transaction is
-- already open, and NullObject if there is no
-- current Data framework.
Commit(me : mutable;
withDelta : Boolean from Standard = Standard_False)
returns Delta from TDF;
---Purpose: Commits the transactions until AND including the
-- current opened one.
Abort(me : mutable);
---Purpose: Aborts the transactions until AND including the
-- current opened one.
--
---C++: alias ~
Data(me) returns Data from TDF;
---Purpose: Returns the Data from TDF.
Transaction(me) returns Integer from Standard;
---Purpose: Returns the number of the transaction opened by <me>.
IsOpen(me)
returns Boolean from Standard;
---Purpose: Returns true if the transaction is open.
fields
myTransaction : Transaction from TDF;
end Transaction;
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