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Ref T529, deterministic sort order when column values are equal

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* the Qt model sorts by column
* when multiple values have the same column value the order among those is more or less random
* added additional property indexes to determine the order among the equal values
This commit is contained in:
Klaus Basan
2019-01-30 16:37:32 +01:00
committed by Mat Sutcliffe
parent 17f67d6106
commit 8c15f45007
8 changed files with 50 additions and 15 deletions
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6
src/blackmisc/db/datastore.h
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@@ -120,6 +120,9 @@ namespace BlackMisc
//! Convert string to DB key
static int stringToDbKey(const QString &candidate);
//! The key index
static const CPropertyIndex &keyIndex() { static const CPropertyIndex k(IndexDbIntegerKey); return k; }
protected:
//! Constructor
IDatastoreObjectWithIntegerKey() {}
@@ -201,6 +204,9 @@ namespace BlackMisc
//! Invalid key
static QString invalidDbKey() { return {}; }
//! The key index
static const CPropertyIndex &keyIndex() { static const CPropertyIndex k(IndexDbStringKey); return k; }
protected:
//! Constructor
IDatastoreObjectWithStringKey() {}