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Ref T104, utility function

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This commit is contained in:
Klaus Basan
2017-07-08 20:32:11 +02:00
committed by Mathew Sutcliffe
parent 4c5dca40d7
commit 922e39f61d
2 changed files with 17 additions and 0 deletions
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14
src/blackmisc/db/datastoreobjectlist.cpp
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@@ -79,6 +79,20 @@ namespace BlackMisc
return keys;
}
template<class OBJ, class CONTAINER, typename KEYTYPE>
QString IDatastoreObjectList<OBJ, CONTAINER, KEYTYPE>::dbKeysAsStrings(const QString &separator) const
{
if (ITimestampObjectList<OBJ, CONTAINER>::container().isEmpty()) { return ""; }
const QSet<KEYTYPE> keys = IDatastoreObjectList<OBJ, CONTAINER, KEYTYPE>::toDbKeySet();
QString s;
for (const KEYTYPE &k : keys)
{
if (!s.isEmpty()) { s += separator; }
s = s.append(k); // append works with string and int
}
return s;
}
template <class OBJ, class CONTAINER, typename KEYTYPE>
KEYTYPE IDatastoreObjectList<OBJ, CONTAINER, KEYTYPE>::getMaxKey(bool *ok) const
{

3
src/blackmisc/db/datastoreobjectlist.h
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@@ -38,6 +38,9 @@ namespace BlackMisc
//! All keys as list
QSet<KEYTYPE> toDbKeySet() const;
//! The DB keys as string
QString dbKeysAsStrings(const QString &separator) const;
//! Max.key value (making sense with integer key)
KEYTYPE getMaxKey(bool *ok = nullptr) const;