finished postgres fetch

src/sql/query_result_reader.cpp

@@ -0,0 +1,87 @@
+#include "matador/sql/query_result_reader.hpp"
+#include "matador/sql/to_value.hpp"
+
+namespace matador::sql {
+
+template < typename Type >
+void convert(const char *valstr, sql::any_type &value)
+{
+  Type val{};
+  sql::to_value(val, valstr);
+  value = val;
+}
+
+void query_result_reader::read_value(const char *id, size_t index, any_type &value, data_type_t type, size_t size)
+{
+  switch (type) {
+    case sql::data_type_t::type_char:
+      convert<char>(column(index), value);
+      break;
+    case sql::data_type_t::type_short:
+      convert<short>(column(index), value);
+      break;
+    case sql::data_type_t::type_int:
+      convert<int>(column(index), value);
+      break;
+    case sql::data_type_t::type_long:
+      convert<long>(column(index), value);
+      break;
+    case sql::data_type_t::type_long_long:
+      convert<long long>(column(index), value);
+      break;
+    case sql::data_type_t::type_unsigned_char:
+      convert<unsigned char>(column(index), value);
+      break;
+    case sql::data_type_t::type_unsigned_short:
+      convert<unsigned short>(column(index), value);
+      break;
+    case sql::data_type_t::type_unsigned_int:
+      convert<unsigned int>(column(index), value);
+      break;
+    case sql::data_type_t::type_unsigned_long:
+      convert<unsigned long>(column(index), value);
+      break;
+    case sql::data_type_t::type_unsigned_long_long:
+      convert<unsigned long long>(column(index), value);
+      break;
+    case sql::data_type_t::type_float:
+      convert<float>(column(index), value);
+      break;
+    case sql::data_type_t::type_double:
+      convert<double>(column(index), value);
+      break;
+    case sql::data_type_t::type_bool: {
+      int val{};
+      sql::to_value(val, column(index));
+      value = val > 0;
+      break;
+    }
+    case sql::data_type_t::type_text:
+    case sql::data_type_t::type_varchar: {
+      value = std::string{column(index)};
+      break;
+    }
+    case sql::data_type_t::type_char_pointer: {
+      value = column(index);
+      break;
+    }
+    case sql::data_type_t::type_time:
+    case sql::data_type_t::type_date: {
+      value = std::string{column(index)};
+      break;
+    }
+    case sql::data_type_t::type_null: {
+      value = nullptr_t{};
+      break;
+    }
+    case sql::data_type_t::type_blob: {
+      throw std::logic_error("data type blob not supported");
+    }
+    case sql::data_type_t::type_unknown: {
+      value = std::string(column(index));
+      break;
+    }
+  }
+}
+
+}