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

source/orm/sql/statement.cpp

@@ -11,20 +11,47 @@ statement::statement(const std::shared_ptr<statement_proxy>& proxy, logger_ptr
 : statement_proxy_(proxy)
 , logger_(std::move(logger)){}
 
-statement &statement::bind(const size_t pos, const char *value) {
-  statement_proxy_->bind(pos, value, strlen(value));
+statement::statement(statement&& x) noexcept
+: statement_proxy_(std::move(x.statement_proxy_))
+, bindings_(std::move(x.bindings_))
+, logger_(std::move(x.logger_)) {
+}
+
+statement& statement::operator=(statement&& x) noexcept {
+  statement_proxy_ = std::move(x.statement_proxy_);
+  bindings_ = std::move(x.bindings_);
+  logger_ = std::move(x.logger_);
   return *this;
 }
 
-statement &statement::bind(const size_t pos, std::string &val, const size_t size)
-{
-  statement_proxy_->bind(pos, val, size);
+statement::statement(const statement& x)
+: statement_proxy_(x.statement_proxy_)
+, bindings_(x.statement_proxy_->create_binder())
+, logger_(x.logger_) {
+}
+statement& statement::operator=(const statement& x) {
+  if (&x == this) {
+    return *this;
+  }
+  statement_proxy_ = x.statement_proxy_;
+  bindings_ = x.statement_proxy_->create_binder();
+  logger_ = x.logger_;
+  return *this;
+}
+
+statement &statement::bind(const size_t pos, const char *value) {
+  statement_proxy_->bind(pos, value, strlen(value), *bindings_);
+  return *this;
+}
+
+statement &statement::bind(const size_t pos, std::string &val, const size_t size) {
+  statement_proxy_->bind(pos, val, size, *bindings_);
   return *this;
 }
 
 utils::result<size_t, utils::error> statement::execute() const {
 //  logger_.info(statement_->query_.sql);
-  return statement_proxy_->execute();
+  return statement_proxy_->execute(*bindings_);
 }
 
 //bool is_unknown(const std::vector<object::column_definition> &columns) {
@@ -39,7 +66,7 @@ utils::result<query_result<record>, utils::error> statement::fetch() const {
 //  }
 
 
-  auto result = statement_proxy_->fetch();
+  auto result = statement_proxy_->fetch(*bindings_);
   if (!result.is_ok()) {
     return utils::failure(result.err());
   }
@@ -49,7 +76,7 @@ utils::result<query_result<record>, utils::error> statement::fetch() const {
 
 utils::result<std::optional<record>, utils::error> statement::fetch_one() const {
     //  logger_.info(statement_->query_.sql);
-    auto result = statement_proxy_->fetch();
+    auto result = statement_proxy_->fetch(*bindings_);
     if (!result.is_ok()) {
         return utils::failure(result.err());
     }