added column generator and tests

include/matador/utils/access.hpp

@@ -0,0 +1,75 @@
+#ifndef QUERY_ACCESS_HPP
+#define QUERY_ACCESS_HPP
+
+#include <string>
+
+namespace matador::utils {
+
+enum class cascade_type;
+
+template < class Type, template < class ... > class ContainerType >
+class container;
+
+class field_attributes;
+
+namespace access {
+template<class Operator, class Type>
+void process(Operator &op, Type &object) {
+  object.process(op);
+}
+
+template<class Operator, class Type>
+void process(Operator &op, const Type &object) {
+  const_cast<Type &>(object).process(op);
+}
+
+template< class Operator, class Type >
+void primary_key(Operator &op, const char *id, Type &value) {
+  op.on_primary_key(id, value);
+}
+
+template< class Operator >
+void primary_key(Operator &op, const char *id, std::string &value, size_t size ) {
+  op.on_primary_key(id, value, size);
+}
+
+template<class Operator>
+void revision(Operator &op, const char *id, unsigned long long &value) {
+  op.on_revision(id, value);
+}
+
+template<class Operator, class Type>
+void attribute(Operator &op, const char *id, Type &value, const field_attributes &attr) {
+  op.on_attribute(id, value, attr);
+}
+
+template<class Operator, class Type>
+void attribute(Operator &op, const char *id, Type &value) {
+  op.on_attribute(id, value);
+}
+
+template<class Operator, class Type>
+void has_one(Operator &op, const char *id, Type &value, cascade_type cascade) {
+  op.on_has_one(id, value, cascade);
+}
+
+template<class Operator, class Type>
+void belongs_to(Operator &op, const char *id, Type &value, cascade_type cascade) {
+  op.on_belongs_to(id, value, cascade);
+}
+
+template<class Operator, class Type, template<class ...> class ContainerType>
+void has_many(Operator &op, const char *id, container<Type, ContainerType> &container, cascade_type cascade) {
+  op.on_has_many(id, container, cascade);
+}
+
+template<class Operator, class Type, template<class ...> class ContainerType>
+void has_many(Operator &op, const char *id, container<Type, ContainerType> &container, const char *left_column, const char *right_column, cascade_type cascade) {
+  op.on_has_many(id, container, left_column, right_column, cascade);
+}
+
+}
+
+}
+
+#endif //QUERY_ACCESS_HPP