added some additional methods to table for later use

source/orm/query/table.cpp

@@ -97,6 +97,25 @@ const table_column * table::column_by_name(const table &tab, const std::string &
   }
   return nullptr;
 }
+std::string table::schema_name() const {
+  return schema_name_;
+}
+
+bool table::is_relation_table() const {
+  return false;
+}
+
+bool table::has_primary_key() const {
+  return false;
+}
+
+const std::string &table::join_column_name() const {
+  return join_column_name_;
+}
+
+const std::string &table::inverse_join_column_name() const {
+  return inverse_join_column_name_;
+}
 
 const table_column& table::create_column(class table &tab, const std::string &name) {
   tab.columns_.emplace_back(name);