Refactored of result and result row (clearer structure depending on connectors)

include/sqlpp11/result.h

@@ -40,21 +40,19 @@ namespace sqlpp
 			using result_row_t = typename db_result_t::result_row_t;
 
 			db_result_t _db_result;
-			result_row_t _result_row;
+			db_result_t _end;
-			result_row_t _end;
 
 		public:
 			result_t():
 				_db_result(),
-				_result_row(),
 				_end()
 				{}
 
 			result_t(db_result_t&& result):
 				_db_result(std::move(result)),
-				_result_row(_db_result.next()),
+				_end()
-				_end({})
+				{
-				{}
+				}
 
 			result_t(const result_t&) = delete;
 			result_t(result_t&&) = default;
@@ -65,11 +63,9 @@ namespace sqlpp
 			class iterator
 			{
 			public:
-				iterator(result_t& result, result_row_t& result_row):
+				iterator(db_result_t& result):
-					_result(result),
+					_result(result)
-					_result_row(result_row)
 				{
-					//std::cerr << "result::iterator::constructor" << std::endl;
 				}
 
 				const result_row_t& operator*() const
@@ -84,7 +80,7 @@ namespace sqlpp
 
 				bool operator==(const iterator& rhs) const
 				{
-					return _result_row == rhs._result_row;
+					return _result.front() == rhs._result.front();
 				}
 
 				bool operator!=(const iterator& rhs) const
@@ -97,33 +93,32 @@ namespace sqlpp
 					_result.pop_front();
 				}
 
-				result_t& _result;
+				db_result_t& _result;
-				result_row_t& _result_row;
 			};
 
 			iterator begin()
 			{
-				return iterator(*this, _result_row);
+				return iterator(_db_result);
 			}
 
 			iterator end()
 			{
-				return iterator(*this, _end);
+				return iterator(_end);
 			}
 
 			const result_row_t& front() const
 			{
-				return _result_row;
+				return _db_result.front();
 			}
 
 			bool empty() const
 			{
-				return _result_row == _end;
+				return _db_result.front() == _end.front();
 			}
 
 			void pop_front()
 			{
-				_result_row = _db_result.next();
+				_db_result.pop_front();
 			}
 
 		};

include/sqlpp11/result_row.h

@@ -106,20 +106,25 @@ namespace sqlpp
 		raw_result_row_t _raw_result_row;
 
 		result_row_t():
-			_raw_result_row(),
+			_impl({}),
-			_impl(_raw_result_row),
+			_raw_result_row({}),
 			_is_row(false)
 		{
 		}
 
 		template<typename T>
 		result_row_t(const raw_result_row_t& raw_result_row, const T&):
+			_impl(raw_result_row),
 			_raw_result_row(raw_result_row),
-			_impl(_raw_result_row),
 			_is_row(_raw_result_row.data != nullptr)
 		{
 		}
 
+		result_row_t(const result_row_t&) = delete;
+		result_row_t(result_row_t&&) = default;
+		result_row_t& operator=(const result_row_t&) = delete;
+		result_row_t& operator=(result_row_t&&) = default;
+
 		result_row_t& operator=(const raw_result_row_t& raw_result_row)
 		{
 			_impl::operator=(raw_result_row);
@@ -128,7 +133,7 @@ namespace sqlpp
 			return *this;
 		}
 
-		bool operator==(const result_row_t& rhs)
+		bool operator==(const result_row_t& rhs) const
 		{
 			return _raw_result_row == rhs._raw_result_row;
 		}
@@ -146,12 +151,21 @@ namespace sqlpp
 		using _field_type = detail::text::_result_entry_t<0>;
 		static constexpr size_t _last_static_index = _impl::_last_index;
 
+		raw_result_row_t _raw_result_row;
 		bool _is_row;
 		std::vector<std::string> _dynamic_columns;
 		std::map<std::string, _field_type> _dynamic_fields;
 
+		dynamic_result_row_t(): 
+			_impl({}),
+			_raw_result_row({}),
+			_is_row(false)
+		{
+		}
+
 		dynamic_result_row_t(const raw_result_row_t& raw_result_row, std::vector<std::string> dynamic_columns): 
-			detail::result_row_impl<0, 0, NamedExpr...>(raw_result_row),
+			_impl(raw_result_row),
+			_raw_result_row(raw_result_row),
 			_is_row(raw_result_row.data != nullptr)
 		{
 			raw_result_row_t dynamic_row = raw_result_row;
@@ -176,9 +190,15 @@ namespace sqlpp
 
 		}
 
+		dynamic_result_row_t(const dynamic_result_row_t&) = delete;
+		dynamic_result_row_t(dynamic_result_row_t&&) = default;
+		dynamic_result_row_t& operator=(const dynamic_result_row_t&) = delete;
+		dynamic_result_row_t& operator=(dynamic_result_row_t&&) = default;
+
 		dynamic_result_row_t& operator=(const raw_result_row_t& raw_result_row)
 		{
 			detail::result_row_impl<0, 0, NamedExpr...>::operator=(raw_result_row);
+			_raw_result_row = raw_result_row;
 			_is_row = raw_result_row.data != nullptr;
 
 			raw_result_row_t dynamic_row = raw_result_row;
@@ -204,6 +224,11 @@ namespace sqlpp
 			return *this;
 		}
 
+		bool operator==(const dynamic_result_row_t& rhs) const
+		{
+			return _raw_result_row == rhs._raw_result_row;
+		}
+
 		const _field_type& at(const std::string& field_name) const
 		{
 			return _dynamic_fields.at(field_name);

include/sqlpp11/select.h

@@ -568,6 +568,11 @@ namespace sqlpp
 					return *this;
 				}
 
+			const typename ExpressionList::_dynamic_names_t& get_dynamic_names() const
+			{
+				return _expression_list._dynamic_expressions._dynamic_expression_names;
+			}
+
 			// Execute
 			template<typename Db>
 				auto run(Db& db) const

include/sqlpp11/text.h

@@ -51,6 +51,12 @@ namespace sqlpp
 			template<size_t index>
 			struct _result_entry_t
 			{
+				_result_entry_t():
+					_is_valid(false),
+					_is_null(true),
+					_value("")
+					{}
+
 				_result_entry_t(const raw_result_row_t& row):
 					_is_valid(row.data != nullptr),
 					_is_null(row.data == nullptr or row.data[index] == nullptr),

tests/SelectTest.cpp

@@ -298,8 +298,6 @@ int main()
 				decltype(t.alpha)::_value_type::_base_value_type, 
 				decltype(f.epsilon)::_value_type::_base_value_type>::value, "Two bigint columns must have identical base_value_type");
 		static_assert(std::is_same<A, B>::value, "select with identical columns(name/value_type) need to have identical result_types");
-		static_assert(sqlpp::is_regular<A>::value, "type requirement");
-		static_assert(sqlpp::is_regular<B>::value, "type requirement");
 	}
 
 	{