QSqlQuery::isNull string overload

Introduce isNull overload to take field name as a parameter.

This is corresponding to the commit
7e6e1412348fb8d8df844d821ee80d6d3de69517

Change-Id: I122f79707d26eaa09c2f38dc31aeee1dac7de33b
Reviewed-by: Mark Brand <mabrand@mabrand.nl>

2 files changed, 19 insertions, 0 deletions

diff --git a/src/sql/kernel/qsqlquery.cpp b/src/sql/kernel/qsqlquery.cpp
index e5f4c5fc56..e040257c62 100644
--- a/src/sql/kernel/qsqlquery.cpp
+++ b/src/sql/kernel/qsqlquery.cpp
@@ -326,6 +326,24 @@ bool QSqlQuery::isNull(int field) const
 }
 
 /*!
+    \overload
+
+    Returns true if there is no field with this \a name; otherwise
+    returns isNull(int index) for the corresponding field index.
+
+    This overload is less efficient than \l{QSqlQuery::}{isNull()}
+*/
+
+bool QSqlQuery::isNull(const QString &name) const
+{
+    int index = d->sqlResult->record().indexOf(name);
+    if (index > -1)
+        return isNull(index);
+    qWarning("QSqlQuery::isNull: unknown field name '%s'", qPrintable(name));
+    return true;
+}
+
+/*!
 
   Executes the SQL in \a query. Returns \c true and sets the query state
   to \l{isActive()}{active} if the query was successful; otherwise
diff --git a/src/sql/kernel/qsqlquery.h b/src/sql/kernel/qsqlquery.h
index 3719643174..ef48b91298 100644
--- a/src/sql/kernel/qsqlquery.h
+++ b/src/sql/kernel/qsqlquery.h
@@ -70,6 +70,7 @@ public:
     bool isValid() const;
     bool isActive() const;
     bool isNull(int field) const;
+    bool isNull(const QString &name) const;
     int at() const;
     QString lastQuery() const;
     int numRowsAffected() const;