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Open a .qetz from its database, each folio read when built (stage D2)

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A .qetz now carries index.sqlite: the project database as QElectroTech
keeps it -- every table but the drawing items, which exist for built
folios only -- with each folio's own data (Diagram::headerXml()) and a
stamp of the schema it was written with (projectDataBase::indexFile(),
QETProject::writeContainerFile(): Save, --resave, --set-titleblock, a
script's and live mode's save). Written when every folio, symbol and wire
has a uuid of its own; a reader that does not know the entry skips it.

With QET_LAZY_FOLIOS=1, a .qetz with an index opens from it: the project
document is joined without its folios (QetContainer::join() with
folio_files), the database and the stores of symbol information and wire
properties are filled from the index (fillFromIndex()), each folio is made
from its own data and keeps the name of its part, read when the folio is
built (Diagram::deferredXml(), QETProject::readFolioPart(),
QetContainer::readFolio() -- pictures and engineering data back from
project.sqlite, QetContainerDb::restoreFolio()). A terminal strip finds its
terminals' folios in the database. Any other .qetz, or one whose index
cannot be used, is read whole as before.

The index is untrusted: refused unless written with this database's
schema, every table read a plain table (not a view), nothing in its schema
run (trusted_schema off); refused, the project is read whole. Checked: an
index of garbage, a wrong stamp, a table made a view -- each refused and
the project saved as a plain save.

The 136-folio f2099 as .qetz opens in 1.8 s (3.65 s read whole, 29 s
building every folio); what is left is mostly its 7 MB of symbol
definitions (0.8 s). The file grows from 2.6 to 5.2 MB, the index
overlapping project.sqlite until D3.

tst_lazyfolios: a .qetz opened from its index builds only the terminal
strip's folios, numbering read as when built, every folio shown in turn
draws and links as when built, the save as when built; fails when a folio
part's engineering data is not put back. Corpus, 342 projects: 340 .qetz
carry an index and open from it (2 have symbols sharing a uuid); saved
back as .qet = eager = master on all 342. Probe on industrial and f2099
.qetz: every folio as eager but the 3 render-noise folios of f2099. In a
real window the .qetz opens and pages building only shown folios and
partners. ctest 96/96 with and without QET_LAZY_FOLIOS=1.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
ispyisail
2026-10-11 18:58:35 +13:00
parent ecc7a39131
commit e89ccf2a40
15 changed files with 719 additions and 136 deletions
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sources/scripting/liveserver.cpp
+3 -3
View File
@@ -919,11 +919,11 @@ QJsonObject LiveServer::snapshot(const QString &raw_path)
if (raw_path.trimmed().isEmpty() || info.isRelative())
return failure(QStringLiteral("path must be absolute"));
if (info.exists()) return failure(QStringLiteral("%1 already exists").arg(raw_path));
QDomDocument xml(project->toXml());
QString error;
if (QETProject::isContainerPath(info.absoluteFilePath())
? !QETProject::writeContainer(xml, info.absoluteFilePath(), &error)
: !QET::writeXmlFile(xml, info.absoluteFilePath(), &error))
? !project->writeContainerFile(info.absoluteFilePath(), &error)
: ![&]() { QDomDocument xml(project->toXml());
return QET::writeXmlFile(xml, info.absoluteFilePath(), &error); }())
return failure(QStringLiteral("snapshot not written: %1").arg(error));
return {{QStringLiteral("ok"), true}, {QStringLiteral("path"), info.absoluteFilePath()},
{QStringLiteral("folio"), e->currentDiagramView()