Expose QSqlDriverPrivate dbmsType in public QSqlDriver api

dbmsType was previously kept as a private variable in QSqlDriverPrivate,
however it's particularly useful for QODBC users.

[ChangeLog][QtSql][QSqlDriver] Add support for determining DBMS type from SQL driver.

Change-Id: If1c221520da9ac4ccef85a02db078679d76eac92
Reviewed-by: Mark Brand <mabrand@mabrand.nl>

4 files changed, 44 insertions, 6 deletions

diff --git a/src/sql/kernel/qsqldriver.cpp b/src/sql/kernel/qsqldriver.cpp
index fdeb10e915..736fe310e3 100644
--- a/src/sql/kernel/qsqldriver.cpp
+++ b/src/sql/kernel/qsqldriver.cpp
@@ -237,6 +237,22 @@ bool QSqlDriver::isOpenError() const
 */
 
 /*!
+    \enum QSqlDriver::DBMSType
+
+    This enum contains DBMS types.
+
+    \value UnknownDBMS
+    \value MSSqlServer
+    \value MySqlServer
+    \value PostgreSQL
+    \value Oracle
+    \value Sybase
+    \value SQLite
+    \value Interbase
+    \value DB2
+*/
+
+/*!
     \fn bool QSqlDriver::hasFeature(DriverFeature feature) const
 
     Returns \c true if the driver supports feature \a feature; otherwise
@@ -767,6 +783,16 @@ QSql::NumericalPrecisionPolicy QSqlDriver::numericalPrecisionPolicy() const
 }
 
 /*!
+    \since 5.4
+
+    Returns the current DBMS type for the database connection.
+*/
+QSqlDriver::DBMSType QSqlDriver::dbmsType() const
+{
+    return d_func()->dbmsType;
+}
+
+/*!
     \since 5.0
     \internal
 
diff --git a/src/sql/kernel/qsqldriver.h b/src/sql/kernel/qsqldriver.h
index 659279a3b3..767c1ac74d 100644
--- a/src/sql/kernel/qsqldriver.h
+++ b/src/sql/kernel/qsqldriver.h
@@ -71,6 +71,18 @@ public:
 
     enum NotificationSource { UnknownSource, SelfSource, OtherSource };
 
+    enum DBMSType {
+        UnknownDBMS,
+        MSSqlServer,
+        MySqlServer,
+        PostgreSQL,
+        Oracle,
+        Sybase,
+        SQLite,
+        Interbase,
+        DB2
+    };
+
     explicit QSqlDriver(QObject *parent=0);
     ~QSqlDriver();
     virtual bool isOpen() const;
@@ -111,6 +123,8 @@ public:
     void setNumericalPrecisionPolicy(QSql::NumericalPrecisionPolicy precisionPolicy);
     QSql::NumericalPrecisionPolicy numericalPrecisionPolicy() const;
 
+    DBMSType dbmsType() const;
+
 public Q_SLOTS:
     virtual bool cancelQuery();
 
diff --git a/src/sql/kernel/qsqldriver_p.h b/src/sql/kernel/qsqldriver_p.h
index bb44a831a3..427e3984fa 100644
--- a/src/sql/kernel/qsqldriver_p.h
+++ b/src/sql/kernel/qsqldriver_p.h
@@ -56,21 +56,19 @@ class QSqlDriverPrivate : public QObjectPrivate
     Q_DECLARE_PUBLIC(QSqlDriver)
 
 public:
-    enum DBMSType {UnknownDB, MSSqlServer, MySqlServer, PostgreSQL, Oracle, Sybase, SQLite, Interbase, DB2};
-
     QSqlDriverPrivate()
       : QObjectPrivate(),
         isOpen(false),
         isOpenError(false),
         precisionPolicy(QSql::LowPrecisionDouble),
-        dbmsType(UnknownDB)
+        dbmsType(QSqlDriver::UnknownDBMS)
     { }
 
     uint isOpen;
     uint isOpenError;
     QSqlError error;
     QSql::NumericalPrecisionPolicy precisionPolicy;
-    DBMSType dbmsType;
+    QSqlDriver::DBMSType dbmsType;
 };
 
 QT_END_NAMESPACE
diff --git a/src/sql/kernel/qsqlresult.cpp b/src/sql/kernel/qsqlresult.cpp
index 074e630394..4cd4e6fec4 100644
--- a/src/sql/kernel/qsqlresult.cpp
+++ b/src/sql/kernel/qsqlresult.cpp
@@ -87,7 +87,7 @@ QString QSqlResultPrivate::positionalToNamedBinding(const QString &query) const
     result.reserve(n * 5 / 4);
     QChar closingQuote;
     int count = 0;
-    bool ignoreBraces = (sqldriver->d_func()->dbmsType == QSqlDriverPrivate::PostgreSQL);
+    bool ignoreBraces = (sqldriver->d_func()->dbmsType == QSqlDriver::PostgreSQL);
 
     for (int i = 0; i < n; ++i) {
         QChar ch = query.at(i);
@@ -128,7 +128,7 @@ QString QSqlResultPrivate::namedToPositionalBinding(const QString &query)
     QChar closingQuote;
     int count = 0;
     int i = 0;
-    bool ignoreBraces = (sqldriver->d_func()->dbmsType == QSqlDriverPrivate::PostgreSQL);
+    bool ignoreBraces = (sqldriver->d_func()->dbmsType == QSqlDriver::PostgreSQL);
 
     while (i < n) {
         QChar ch = query.at(i);