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Make created dive site uuid deterministic

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Having random uuids seemed like a good idea, but there are several
situations where they really cause problems. One is merging dive file
imports from V2 logfiles. Another is testing such imports.

Instead of making the uuid random we now hash the name and add the
timestamp of the first dive associated with this dive site to the hash
(first in this context is "first encountered" with no guarantee that it is
the chronologically first). This way V2 imports create deterministic uuids
but uuid conflicts are still extremely unlikely, even if the user has
multiple dive sites with the same name.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Dirk Hohndel 2015-08-24 10:37:18 -07:00
parent 6eed3155e6
commit e03b553e80
11 changed files with 60 additions and 37 deletions
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5
qt-models/divelocationmodel.cpp
View file

@ -1,3 +1,4 @@
#include "units.h"
#include "divelocationmodel.h"
#include "dive.h"
#include <QDebug>
@ -126,14 +127,14 @@ void LocationInformationModel::update()
endResetModel();
}
int32_t LocationInformationModel::addDiveSite(const QString& name, int lon, int lat)
int32_t LocationInformationModel::addDiveSite(const QString& name, timestamp_t divetime, int lon, int lat)
{
degrees_t latitude, longitude;
latitude.udeg = lat;
longitude.udeg = lon;
beginInsertRows(QModelIndex(), dive_site_table.nr + 2, dive_site_table.nr + 2);
uint32_t uuid = create_dive_site_with_gps(name.toUtf8().data(), latitude, longitude);
uint32_t uuid = create_dive_site_with_gps(name.toUtf8().data(), latitude, longitude, divetime);
qSort(dive_site_table.dive_sites, dive_site_table.dive_sites + dive_site_table.nr, dive_site_less_than);
internalRowCount = dive_site_table.nr;
endInsertRows();