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statistics: sort dive sites

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The dive sites where sorted by location in RAM, which is just
silly. Add a DiveSiteWrapper that sorts by name, though that
should probably be improved.

Suggested-by: Peter Zaal <peter.zaal@gmail.com>
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2021-01-10 20:22:18 +01:00 committed by Dirk Hohndel
parent 0efcbb0eb6
commit 2d864c3e9d
1 changed files with 31 additions and 8 deletions
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39
stats/statsvariables.cpp
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@ -45,6 +45,30 @@ static QString join_strings(const std::vector<QString> &v)
return res;
}
// A wrapper around dive site, that caches the name of the dive site
struct DiveSiteWrapper {
const dive_site *ds;
QString name;
DiveSiteWrapper(const dive_site *ds) : ds(ds),
name(ds ? ds->name : "")
{
}
bool operator<(const DiveSiteWrapper &d2) const {
if (int cmp = QString::compare(name, d2.name, Qt::CaseInsensitive))
return cmp < 0;
return ds < d2.ds; // This is just random, try something better.
}
bool operator==(const DiveSiteWrapper &d2) const {
return ds == d2.ds;
}
bool operator!=(const DiveSiteWrapper &d2) const {
return ds != d2.ds;
}
QString format() const {
return ds ? name : StatsTranslations::tr("no divesite");
}
};
// Note: usually I dislike functions defined inside class/struct
// declarations ("Java style"). However, for brevity this is done
// in this rather template-heavy source file more or less consistently.
@ -91,9 +115,9 @@ static bool is_invalid_value(const year_quarter &)
return false;
}
static bool is_invalid_value(const dive_site *d)
static bool is_invalid_value(const DiveSiteWrapper &d)
{
return !d;
return !d.ds;
}
static bool is_invalid_value(const StatsOperationResults &res)
@ -1730,15 +1754,14 @@ struct CylinderTypeVariable : public StatsVariableTemplate<StatsVariable::Type::
// ============ Location (including trip location) ============
using LocationBin = SimpleBin<const dive_site *>;
using LocationBin = SimpleBin<DiveSiteWrapper>;
struct LocationBinner : public SimpleBinner<LocationBinner, LocationBin> {
QString format(const StatsBin &bin) const override {
const dive_site *ds = derived_bin(bin).value;
return QString(ds ? ds->name : "-");
return derived_bin(bin).value.format();
}
const dive_site *to_bin_value(const dive *d) const {
return d->dive_site;
const DiveSiteWrapper to_bin_value(const dive *d) const {
return DiveSiteWrapper(d->dive_site);
}
};
@ -1748,7 +1771,7 @@ struct LocationVariable : public StatsVariableTemplate<StatsVariable::Type::Disc
return StatsTranslations::tr("Dive site");
}
QString diveCategories(const dive *d) const override {
return d->dive_site ? d->dive_site->name : "-";
return DiveSiteWrapper(d->dive_site).format();
}
std::vector<const StatsBinner *> binners() const override {
return { &location_binner };