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.qetz: bring an older database to the current format one step at a time

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The reader of project.sqlite knew two formats at once: every query asked
the database which column names to use (v2() ? "folio_id" : "folio_uuid"
and so on), and each new format would have added another branch to every
query. Asked in discussion #1440.

An older database is now brought up a format at a time when a .qetz opens
(readyToRead()): format 2 to 3 renames its tables' columns, adds the show
columns and puts the symbols' and wires' uuids and the symbols' type back
in the folio files; 3 to 4 has nothing to change for reading. The reader
then knows only the current format. The next format adds one step.

Checked: the format 2 test file (tests/qttest/fixtures/qetz_format2.qetz)
resaved as .qet and as .qetz gives the same files as master. format2Read
now also checks that every symbol and wire gets its uuid and type back:
it failed with the type left out of the step, which the test did not see
before. ctest 106/106.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
ispyisail
2026-10-16 06:59:46 +13:00
parent 8d59d25796
commit d50f27dc8b
2 changed files with 133 additions and 64 deletions
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tests/qttest/tst_qetcontainer.cpp
+16
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@@ -736,6 +736,22 @@ private slots:
QVERIFY2(QetContainer::join(entries, &project, &error), qPrintable(error));
QVERIFY(project.toString().contains(QStringLiteral("<elementInformation ")));
QVERIFY(!project.toString().contains(QStringLiteral("qetz-")));
//Format 2 moved the uuids of symbols and wires and the symbols'
//type out of the folio files: they come back
int symbols = 0, wires = 0;
const QDomNodeList diagrams = project.elementsByTagName(QStringLiteral("diagram"));
for (int i = 0 ; i < diagrams.size() ; ++i) {
const QDomElement d = diagrams.at(i).toElement();
for (QDomElement e = d.firstChildElement(QStringLiteral("elements")).firstChildElement(QStringLiteral("element"));
!e.isNull() ; e = e.nextSiblingElement(QStringLiteral("element")), ++symbols) {
QVERIFY(!QUuid(e.attribute(QStringLiteral("uuid"))).isNull());
QVERIFY(e.attribute(QStringLiteral("type")).startsWith(QStringLiteral("embed://")));
}
for (QDomElement c = d.firstChildElement(QStringLiteral("conductors")).firstChildElement(QStringLiteral("conductor"));
!c.isNull() ; c = c.nextSiblingElement(QStringLiteral("conductor")), ++wires)
QVERIFY(!QUuid(c.attribute(QStringLiteral("uuid"))).isNull());
}
QVERIFY(symbols > 0 && wires > 0);
const QList<QetZip::Entry> resaved = QetContainer::split(project, QString(), &error);
QVERIFY2(!resaved.isEmpty(), qPrintable(error));
const QString d = backDifference(project, resaved);