QSqlTableModel: expose methods for getting primary values

These methods are very useful in subclasses.

Change-Id: Ifdfee9d90cbdad97f349e46b587582f1d9e7cd7a
Reviewed-by: Andy Shaw <andy.shaw@digia.com>

src/sql/kernel/qsqlrecord.cpp

@@ -524,4 +524,19 @@ QDebug operator<<(QDebug dbg, const QSqlRecord &r)
 }
 #endif
 
+/*!
+    \since 5.1
+    Returns a record containing the fields represented in \a keyFields set to values
+    that match by field name.
+*/
+QSqlRecord QSqlRecord::keyValues(const QSqlRecord &keyFields) const
+{
+    QSqlRecord retValues(keyFields);
+
+    for (int i = retValues.count() - 1; i >= 0; --i)
+        retValues.setValue(i, value(retValues.fieldName(i)));
+
+    return retValues;
+}
+
 QT_END_NAMESPACE

src/sql/kernel/qsqlrecord.h

@@ -95,6 +95,7 @@ public:
     void clear();
     void clearValues();
     int count() const;
+    QSqlRecord keyValues(const QSqlRecord &keyFields) const;
 
 private:
     void detach();

src/sql/models/qsqltablemodel.cpp

@@ -195,29 +195,6 @@ bool QSqlTableModelPrivate::exec(const QString &stmt, bool prepStatement,
     return true;
 }
 
-QSqlRecord QSqlTableModelPrivate::primaryValues(const QSqlRecord &rec, const QSqlRecord &pIndex)
-{
-    QSqlRecord pValues(pIndex);
-
-    for (int i = pValues.count() - 1; i >= 0; --i)
-        pValues.setValue(i, rec.value(pValues.fieldName(i)));
-
-    return pValues;
-}
-
-QSqlRecord QSqlTableModelPrivate::primaryValues(int row) const
-{
-    Q_Q(const QSqlTableModel);
-
-    const QSqlRecord &pIndex = primaryIndex.isEmpty() ? rec : primaryIndex;
-
-    ModifiedRow mr = cache.value(row);
-    if (mr.op() != None)
-        return mr.primaryValues(pIndex);
-    else
-        return primaryValues(q->QSqlQueryModel::record(row), pIndex);
-}
-
 /*!
     \class QSqlTableModel
     \brief The QSqlTableModel class provides an editable data model
@@ -432,7 +409,7 @@ bool QSqlTableModel::selectRow(int row)
     const QString table_filter = d->filter;
     d->filter = d->db.driver()->sqlStatement(QSqlDriver::WhereStatement,
                                               d->tableName,
-                                              d->primaryValues(row),
+                                              primaryValues(row),
                                               false);
     static const QString wh = Sql::where() + Sql::sp();
     if (d->filter.startsWith(wh, Qt::CaseInsensitive))
@@ -652,7 +629,7 @@ bool QSqlTableModel::updateRowInTable(int row, const QSqlRecord &values)
     QSqlRecord rec(values);
     emit beforeUpdate(row, rec);
 
-    const QSqlRecord whereValues = d->primaryValues(row);
+    const QSqlRecord whereValues = primaryValues(row);
     const bool prepStatement = d->db.driver()->hasFeature(QSqlDriver::PreparedQueries);
     const QString stmt = d->db.driver()->sqlStatement(QSqlDriver::UpdateStatement, d->tableName,
                                                      rec, prepStatement);
@@ -718,7 +695,7 @@ bool QSqlTableModel::deleteRowFromTable(int row)
     Q_D(QSqlTableModel);
     emit beforeDelete(row);
 
-    const QSqlRecord whereValues = d->primaryValues(row);
+    const QSqlRecord whereValues = primaryValues(row);
     const bool prepStatement = d->db.driver()->hasFeature(QSqlDriver::PreparedQueries);
     const QString stmt = d->db.driver()->sqlStatement(QSqlDriver::DeleteStatement,
                                                       d->tableName,
@@ -1439,4 +1416,24 @@ bool QSqlTableModel::setRecord(int row, const QSqlRecord &values)
     return true;
 }
 
+/*!
+    \since 5.1
+    Returns a record containing the fields represented in the primary key set to the values
+    at \a row. If no primary key is defined, the returned record will contain all fields.
+
+    \sa primaryKey()
+*/
+QSqlRecord QSqlTableModel::primaryValues(int row) const
+{
+    Q_D(const QSqlTableModel);
+
+    const QSqlRecord &pIndex = d->primaryIndex.isEmpty() ? d->rec : d->primaryIndex;
+
+    QSqlTableModelPrivate::ModifiedRow mr = d->cache.value(row);
+    if (mr.op() != QSqlTableModelPrivate::None)
+        return mr.primaryValues(pIndex);
+    else
+        return QSqlQueryModel::record(row).keyValues(pIndex);
+}
+
 QT_END_NAMESPACE

src/sql/models/qsqltablemodel.h

@@ -134,6 +134,7 @@ protected:
     void setPrimaryKey(const QSqlIndex &key);
     void setQuery(const QSqlQuery &query);
     QModelIndex indexInQuery(const QModelIndex &item) const;
+    QSqlRecord primaryValues(int row) const;
 };
 
 QT_END_NAMESPACE

src/sql/models/qsqltablemodel_p.h

@@ -71,8 +71,6 @@ public:
           busyInsertingRows(false)
     {}
     void clear();
-    static QSqlRecord primaryValues(const QSqlRecord &rec, const QSqlRecord &pIndex);
-    QSqlRecord primaryValues(int index) const;
     virtual void clearCache();
     QSqlRecord record(const QVector<QVariant> &values) const;
 
@@ -170,7 +168,7 @@ public:
             if (m_op == None || m_op == Insert)
                 return QSqlRecord();
 
-            return QSqlTableModelPrivate::primaryValues(m_db_values, pi);
+            return m_db_values.keyValues(pi);
         }
     private:
         inline static void setGenerated(QSqlRecord& r, bool g)