entity query and record progress

backends/sqlite/src/sqlite_connection.cpp

@@ -65,7 +65,7 @@ int sqlite_connection::parse_result(void* param, int column_count, char** values
 
   if (context->prototype.empty()) {
     for(int i = 0; i < column_count; ++i) {
-      context->prototype.append(sql::column_definition{columns[i]});
+      context->prototype.emplace_back(columns[i]);
     }
   }
 
@@ -144,12 +144,12 @@ sql::data_type_t string2type(const char *type)
   }
 }
 
-sql::record sqlite_connection::describe(const std::string& table)
+std::vector<sql::column_definition> sqlite_connection::describe(const std::string& table)
 {
   const auto result = fetch_internal("PRAGMA table_info(" + table + ")");
 
   sqlite_result_reader reader(result.rows, result.prototype.size());
-  sql::record prototype;
+  std::vector<sql::column_definition> prototype;
   while (reader.fetch()) {
     char *end = nullptr;
     // Todo: add index to column
@@ -163,7 +163,7 @@ sql::record sqlite_connection::describe(const std::string& table)
       null_opt = sql::null_option::NOT_NULL;
     }
     // f.default_value(res->column(4));
-    prototype.append({name, type, utils::null_attributes, null_opt, index});
+    prototype.emplace_back(name, type, utils::null_attributes, null_opt, index);
   }
 
   return std::move(prototype);