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6e33d3ced2
Redundant keyword 'mutable' removed in CDL files. In IGESConvGeom_GeomBuilder, unused methods MakeXY() and MakeXYZ() removed. Method StepAP214_AutoDesignGroupAssignment::Init() replicating same method of the base class is removed as it causes CDL extraction error after above (seemingly irrelevant) changes.
240 lines
8.2 KiB
Plaintext
240 lines
8.2 KiB
Plaintext
-- Created by: DAUTRY Philippe
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-- Copyright (c) 1997-1999 Matra Datavision
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-- Copyright (c) 1999-2014 OPEN CASCADE SAS
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--
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-- This file is part of Open CASCADE Technology software library.
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--
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-- This library is free software; you can redistribute it and/or modify it under
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-- the terms of the GNU Lesser General Public License version 2.1 as published
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-- by the Free Software Foundation, with special exception defined in the file
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-- OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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-- distribution for complete text of the license and disclaimer of any warranty.
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--
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-- Alternatively, this file may be used under the terms of Open CASCADE
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-- commercial license or contractual agreement.
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-- ------------
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---Version: 0.0
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--Version Date Purpose
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-- 0.0 Feb 4 1997 Creation
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class Data from TDF inherits TShared from MMgt
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---Purpose: This class is used to manipulate a complete
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-- independant, self sufficient data structure and
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-- its services:
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--
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-- Access to the root label;
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--
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-- Opens, aborts, commits a transaction;
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--
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-- Generation and use of Delta, depending on the time.
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-- This class uses a special allocator
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-- (see LabelNodeAllocator() method)
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-- for more efficient allocation of
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-- objects in memory.
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uses
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Attribute from TDF,
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Label from TDF,
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LabelNodePtr from TDF,
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Delta from TDF,
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IDFilter from TDF,
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ListOfInteger from TColStd,
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HAllocator from TDF
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raises
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NoMoreObject from Standard
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is
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Create returns Data from TDF;
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---Purpose: A new and empty Data structure.
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-- -----------------------------------------------------------------------
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Root(me) returns Label from TDF;
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---Purpose: Returns the root label of the Data structure.
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--
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---C++: inline
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---C++: return const
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-- -----------------------------------------------------------------------
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-- Important notice: For a more secure use of Open/Commit/Abort
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-- transactions, see class Transaction from TDF.
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Transaction(me) returns Integer;
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---Purpose: Returns the current transaction number.
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OpenTransaction(me : mutable) returns Integer
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is private;
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---Purpose: Increments the transaction number and returns it.
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CommitTransaction(me : mutable;
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withDelta : Boolean from Standard = Standard_False)
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returns Delta from TDF
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raises NoMoreObject from Standard
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is private;
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---Purpose: Decrements the transaction number and commits the
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-- modifications.
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--
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-- Raises if there is no current transaction.
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--
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-- Optionnal <withDelta> set to True indiquates a
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-- Delta must be generated.
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CommitUntilTransaction(me : mutable;
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untilTransaction : Integer from Standard;
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withDelta : Boolean from Standard = Standard_False)
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returns Delta from TDF
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is private;
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---Purpose: Decrements the transaction number and commits the
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-- modifications until AND including the transaction
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-- <untilTransaction>.
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AbortTransaction(me : mutable)
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raises NoMoreObject from Standard
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is private;
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---Purpose: Decrements the transaction number and forgets the
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-- modifications.
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--
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-- Raises if there is no current transaction.
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AbortUntilTransaction(me : mutable;
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untilTransaction : Integer from Standard)
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is private;
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---Purpose: Decrements the transaction number and forgets the
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-- modifications until AND including the transaction
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-- <untilTransaction>.
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-- -----------------------------------------------------------------------
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Time(me) returns Integer from Standard;
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---Purpose: Returns the current tick. It is incremented each Commit.
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--
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---C++: inline
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IsApplicable (me;
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aDelta : Delta from TDF)
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returns Boolean from Standard;
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---Purpose: Returns true if <aDelta> is applicable HERE and NOW.
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Undo(me : mutable;
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aDelta : Delta from TDF;
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withDelta : Boolean from Standard = Standard_False)
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returns Delta from TDF;
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---Purpose: Apply <aDelta> to undo a set of attribute
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-- modifications.
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--
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-- Optionnal <withDelta> set to True indiquates a
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-- Delta Set must be generated. (See above)
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-- -----------------------------------------------------------------------
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Destroy(me : mutable);
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---C++: alias ~
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-- Private internal use methods ------------------------------------------
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CommitTransaction(me : mutable;
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aLabel : Label from TDF;
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aDelta : Delta from TDF;
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withDelta : Boolean from Standard)
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returns Integer from Standard
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is private;
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---Purpose: Decrements the transaction number and commits the
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-- modifications. Used to implement the recursif
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-- commit process. The returned boolean says how many
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-- attributes (new, modified or deleted) has been
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-- committed from the previous transaction into the
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-- current one.
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-- Miscelleaneous
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-- --------------
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NotUndoMode(me) returns Boolean from Standard;
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---Purpose: Returns the undo mode status.
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--
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---C++: inline
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Dump(me; anOS : in out OStream from Standard)
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returns OStream from Standard;
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---Purpose: Dumps the Data on <aStream>.
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--
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---C++: return &
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---C++: alias operator<<
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-- methods for check modifications outside the transaction -----------
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AllowModification(me: mutable; isAllowed : Boolean from Standard );
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---Purpose: Sets modification mode.
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--
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---C++: inline
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IsModificationAllowed(me) returns Boolean from Standard;
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---Purpose: returns modification mode.
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--
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---C++: inline
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LabelNodeAllocator(me) returns HAllocator from TDF;
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---Purpose: Returns TDF_HAllocator, which is an
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-- incremental allocator used by
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-- TDF_LabelNode.
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-- This allocator is used to
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-- manage TDF_LabelNode objects,
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-- but it can also be used for
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-- allocating memory to
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-- application-specific data (be
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-- careful because this
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-- allocator does not release
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-- the memory).
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-- The benefits of this
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-- allocation scheme are
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-- noticeable when dealing with
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-- large OCAF documents, due to:
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-- 1. Very quick allocation of
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-- objects (memory heap is not
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-- used, the algorithm that
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-- replaces it is very simple).
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-- 2. Very quick destruction of
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-- objects (memory is released not
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-- by destructors of TDF_LabelNode,
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-- but rather by the destructor of
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-- TDF_Data).
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-- 3. TDF_LabelNode objects do not
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-- fragmentize the memory; they are
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-- kept compactly in a number of
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-- arrays of 16K each.
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-- 4. Swapping is reduced on large
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-- data, because each document now
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-- occupies a smaller number of
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-- memory pages.
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---C++: inline
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---C++: return const &
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fields
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myRoot : LabelNodePtr from TDF;
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myTransaction : Integer from Standard;
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myNbTouchedAtt : Integer from Standard;
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myNotUndoMode : Boolean from Standard;
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myTime : Integer from Standard;
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myTimes : ListOfInteger from TColStd;
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myLabelNodeAllocator: HAllocator from TDF;
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myAllowModification : Boolean from Standard;
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friends
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class Transaction from TDF,
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class LabelNode from TDF
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end Data;
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