added sequence-specific code (create, drop and nextval)

source/orm/query/internal/query_parts.cpp

@@ -134,6 +134,19 @@ const std::vector<table_column> &query_select_part::columns() const {
   return columns_;
 }
 
+query_select_nextval_part::query_select_nextval_part(std::string sequence_name)
+: query_part(sql::dialect_token::NextVal)
+, sequence_name_(std::move(sequence_name)){
+}
+
+const std::string& query_select_nextval_part::sequence_name() const {
+  return sequence_name_;
+}
+
+void query_select_nextval_part::accept(query_part_visitor& visitor) {
+  visitor.visit(*this);
+}
+
 query_from_part::query_from_part(std::vector<table> tables)
 : query_part(sql::dialect_token::From)
 , tables_(std::move(tables)) {
@@ -419,6 +432,18 @@ void query_create_table_constraints_part::accept(query_part_visitor &visitor) {
   visitor.visit(*this);
 }
 
+query_create_sequence_part::query_create_sequence_part(std::string sequence_name)
+: query_part(sql::dialect_token::Sequence)
+, sequence_name_(std::move(sequence_name)) {}
+
+const std::string& query_create_sequence_part::sequence_name() const {
+  return sequence_name_;
+}
+
+void query_create_sequence_part::accept(query_part_visitor& visitor) {
+  visitor.visit(*this);
+}
+
 query_create_schema_part::query_create_schema_part(std::string schema)
 : query_part(sql::dialect_token::Schema)
 , schema_(std::move(schema)) {
@@ -453,6 +478,19 @@ void query_drop_table_part::accept(query_part_visitor &visitor) {
   visitor.visit(*this);
 }
 
+query_drop_sequence_part::query_drop_sequence_part(std::string sequence_name)
+: query_part(sql::dialect_token::Table)
+, sequence_name_(std::move(sequence_name)) {
+}
+
+const std::string& query_drop_sequence_part::sequence_name() const {
+  return sequence_name_;
+}
+
+void query_drop_sequence_part::accept(query_part_visitor& visitor) {
+  visitor.visit(*this);
+}
+
 query_drop_schema_part::query_drop_schema_part(std::string schema_)
 : query_part(sql::dialect_token::Schema)
 , schema_(std::move(schema_)) {