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Keep each fact once in a .qetz: drop the stored project database

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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>
This commit is contained in:
ispyisail
2026-10-14 07:35:34 +13:00
parent 39855e1bb5
commit c259cae429
14 changed files with 165 additions and 842 deletions
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tests/qttest/tst_qetcontainer.cpp
+4 -3
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@@ -70,14 +70,15 @@ class tst_qetcontainer : public QObject
}
//@p document without what QElectroTech computes, which a .qetz
//does not keep (format 3); tst_resaveunchanged checks that
//does not keep (format 4); tst_resaveunchanged checks that
//QElectroTech gives it back
static QDomDocument withoutComputed(const QDomDocument &document)
{
QDomDocument copy = document.cloneNode(true).toDocument();
const bool own_uuids = QetContainer::ownUuids(copy.documentElement());
for (QDomElement diagram = copy.documentElement().firstChildElement(QStringLiteral("diagram"));
!diagram.isNull() ; diagram = diagram.nextSiblingElement(QStringLiteral("diagram")))
QetContainer::dropComputed(diagram, false);
QetContainer::dropComputed(diagram, own_uuids);
return copy;
}
@@ -243,7 +244,7 @@ private slots:
QCOMPARE(count("element_info"), int(original.elementsByTagName(QStringLiteral("elementInformation")).size()));
QCOMPARE(count("link"), int(original.elementsByTagName(QStringLiteral("link_uuid")).size()));
QCOMPARE(count("conductor"), int(original.elementsByTagName(QStringLiteral("conductor")).size()));
QVERIFY(count("folio_property") + count("doc_project_property") > 0);
QVERIFY(count("folio_property") + count("project_property") > 0);
sqlite3_close(db);
}