Merge pull request #187 from an-tao/dev

Optimize the Field class

orm_lib/inc/drogon/orm/Field.h

@@ -196,7 +196,17 @@ template <>
 std::vector<char> Field::as<std::vector<char>>() const;
 template <>
 string_view Field::as<string_view>() const;
-// template <>
+template <>
+int Field::as<int>() const;
+template <>
+long Field::as<long>() const;
+template <>
+long long Field::as<long long>() const;
+template <>
+float Field::as<float>() const;
+template <>
+double Field::as<double>() const;
+
 // std::vector<int32_t> Field::as<std::vector<int32_t>>() const;
 // template <>
 // std::vector<int64_t> Field::as<std::vector<int64_t>>() const;

orm_lib/src/Field.cc

@@ -15,6 +15,7 @@
 #include <drogon/orm/Field.h>
 #include <drogon/utils/Utilities.h>
 #include <trantor/utils/Logger.h>
+#include <stdlib.h>
 
 using namespace drogon::orm;
 Field::Field(const Row &row, Row::size_type columnNum) noexcept
@@ -90,6 +91,37 @@ string_view Field::as<string_view>() const
     auto length = _result.getLength(_row, _column);
     return string_view(first, length);
 }
+
+template <>
+int Field::as<int>() const
+{
+    return atoi(_result.getValue(_row, _column));
+}
+
+template <>
+long Field::as<long>() const
+{
+    return atol(_result.getValue(_row, _column));
+}
+
+template <>
+long long Field::as<long long>() const
+{
+    return atoll(_result.getValue(_row, _column));
+}
+
+template <>
+float Field::as<float>() const
+{
+    return atof(_result.getValue(_row, _column));
+}
+
+template <>
+double Field::as<double>() const
+{
+    return std::stod(_result.getValue(_row, _column));
+}
+
 const char *Field::c_str() const
 {
     return as<const char *>();