Add postgresql support

src/database/query.cpp

@@ -1,9 +1,29 @@
 #include <database/query.hpp>
 #include <database/column.hpp>
 
-template <>
-void add_param<Id>(Query&, const Id&)
-{}
+void actual_bind(Statement& statement, const std::string& value, int index)
+{
+  log_debug("binding string:", value, " to col ", index);
+  statement.bind_text(index, value);
+}
+
+void actual_bind(Statement& statement, const std::size_t value, int index)
+{
+  log_debug("binding size_t:", value);
+  statement.bind_int64(index, value);
+}
+
+void actual_bind(Statement& statement, const OptionalBool& value, int index)
+{
+  log_debug("binding optional_t:", value.to_string());
+  if (!value.is_set)
+    statement.bind_int64(index, 0);
+  else if (value.value)
+    statement.bind_int64(index, 1);
+  else
+    statement.bind_int64(index, -1);
+}
+
 
 void actual_add_param(Query& query, const std::string& val)
 {
@@ -28,7 +48,8 @@ Query& operator<<(Query& query, const char* str)
 
 Query& operator<<(Query& query, const std::string& str)
 {
-  query.body += "?";
+  query.body += "$" + std::to_string(query.current_param);
+  query.current_param++;
   actual_add_param(query, str);
   return query;
 }