Updating rows kinda works.

Blocking calls are still used.

pgsql/Pgsql_Row.h

@@ -14,6 +14,51 @@ namespace Pgsql {
 	 */
 	class Row {
 	public:
+		class const_iterator {
+		public:
+			const_iterator(const Row &r, int col)
+				: m_row(r)
+				, m_col(col)
+			{}
+
+			const_iterator operator++()
+			{
+				const_iterator t(*this);
+				++m_col;
+				return t;
+			}
+
+			const_iterator& operator++(int)
+			{
+				++m_col;
+				return *this;
+			}
+
+			bool operator==(const const_iterator &rhs)
+			{
+				return m_row == rhs.m_row && m_col == rhs.m_col;
+			}
+
+			bool operator!=(const const_iterator &rhs)
+			{
+				return !operator==(rhs);
+			}
+
+			const Value operator*()
+			{
+				return m_row.get(m_col);
+			}
+
+			const Value operator->()
+			{
+				return m_row.get(m_col);
+			}
+
+		private:
+			const Row &m_row;
+			int m_col;
+		};
+
 		Row(const Result &result, int row);
 		bool next();
 
@@ -22,6 +67,12 @@ namespace Pgsql {
 		//Value get(const char *colname) const;
 		//bool get(int col, QString &s);
 
+		const_iterator begin() const
+		{
+			return const_iterator(*this, 0);
+		}
+
+		const_iterator end() const;
 
 	private:
 		const Result& m_result;