moved parameter_binder from member to parameter to bind, execute and fetch methods

include/matador/sql/interface/parameter_binder.hpp

@@ -1,37 +1,11 @@
 #ifndef QUERY_PARAMETER_BINDER_HPP
 #define QUERY_PARAMETER_BINDER_HPP
 
-#include "matador/utils/types.hpp"
-
-#include <string>
-#include <cstring>
+#include "matador/utils/attribute_writer.hpp"
 
 namespace matador::sql::interface {
 
-class parameter_binder
-{
-public:
-  virtual ~parameter_binder() = default;
-
-  virtual void bind(size_t pos, int8_t) = 0;
-  virtual void bind(size_t pos, int16_t) = 0;
-  virtual void bind(size_t pos, int32_t) = 0;
-  virtual void bind(size_t pos, int64_t) = 0;
-  virtual void bind(size_t pos, uint8_t) = 0;
-  virtual void bind(size_t pos, uint16_t) = 0;
-  virtual void bind(size_t pos, uint32_t) = 0;
-  virtual void bind(size_t pos, uint64_t) = 0;
-  virtual void bind(size_t pos, bool) = 0;
-  virtual void bind(size_t pos, float) = 0;
-  virtual void bind(size_t pos, double) = 0;
-  virtual void bind(size_t pos, const char *) = 0;
-  virtual void bind(size_t pos, const char *, size_t size) = 0;
-  virtual void bind(size_t pos, const std::string&) = 0;
-  virtual void bind(size_t pos, const std::string &x, size_t size) = 0;
-  virtual void bind(size_t pos, const utils::blob &) = 0;
-//  virtual void bind(size_t pos, const matador::time&) = 0;
-//  virtual void bind(size_t pos, const matador::date&) = 0;
-};
+using parameter_binder = utils::attribute_writer;
 
 }