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A .qetz held the engineering data twice: the document's tables, and beside them QElectroTech's own project database (stage D2/D3), which QElectroTech also builds from the document. Two copies of one fact can disagree, and the copy cost a third of the file. Now project.sqlite holds the document's tables only; QElectroTech builds its own project database from them when the project opens, as it does for a .qet. Measured (this build, lazy folios): industrial (50 folios): 620 -> 374 KB, open 0.37 -> 0.65 s f2099/nuri (136 folios): 3.27 -> 2.20 MB, open 2.2 -> 3.5 s The same projects as .qet open in 3.3 s and 23 s. Saving still copies the file of every folio not built, with its rows (stage D4): the project keeps the part each folio was read from. nuri opened and saved again: 6.3 s, no folio built, the same bytes. A symbol's terminal list is left out of the folio file when every folio, symbol and wire has a uuid of its own, now checked on the document (QetContainer::ownUuids()) rather than by the stored database being written. Checked: 342 corpus projects open, .qetz -> .qet equals the plain resave, a .qetz saved twice gives the same bytes; tst_lazyfolios, tst_qetcontainer, tst_resaveunchanged (which now checks project.sqlite holds only the document's tables). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
50 lines
1.9 KiB
C++
50 lines
1.9 KiB
C++
/*
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Copyright 2006-2026 The QElectroTech Team
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This file is part of QElectroTech.
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QElectroTech is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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QElectroTech is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with QElectroTech. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef QETCONTAINERDB_H
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#define QETCONTAINERDB_H
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#include <QByteArray>
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#include <QDomElement>
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/**
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@brief The QetContainerDb namespace
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The engineering data of a project, moved between its document and the
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project.sqlite of a .qetz: what a folio's title block says, a symbol's
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information, a coil's contacts, a wire's ends and number. In a .qetz
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these live only in the database; the folio files keep where things are
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drawn. extract() takes them out of the document into a database,
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restore() puts them back, so that restore(extract(d)) is d.
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A row's key is its item's uuid, which stays in the folio file. An item
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without a uuid of its own -- none, or one another item shares -- gets a
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uuid made from what it holds, left in the document as qetz-key or
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qetz-folio. A block of a shape
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this does not model -- a value holding elements, say -- stays in the
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document, so nothing can be lost by moving.
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*/
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namespace QetContainerDb
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{
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QByteArray extract(QDomElement project, QString *error = nullptr,
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const QByteArray &kept_from = QByteArray());
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bool restore(QDomElement project, const QByteArray &database, QString *error = nullptr);
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/// true if @p database is of the format this writes
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bool currentFormat(const QByteArray &database);
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}
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#endif // QETCONTAINERDB_H
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