diff options
Diffstat (limited to 'sql/sql_class.h')
| -rw-r--r-- | sql/sql_class.h | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/sql/sql_class.h b/sql/sql_class.h index acd48b07900..1a7eb943193 100644 --- a/sql/sql_class.h +++ b/sql/sql_class.h @@ -5037,6 +5037,14 @@ public: Currently all intercepting classes derive from select_result_interceptor. */ virtual bool is_result_interceptor()=0; + + /* + This method is used to distinguish an normal SELECT from the cursor + structure discovery for cursor%ROWTYPE routine variables. + If this method returns "true", then a SELECT execution performs only + all preparation stages, but does not fetch any rows. + */ + virtual bool view_structure_only() const { return false; } }; @@ -5156,9 +5164,13 @@ private: { List<sp_variable> *spvar_list; uint field_count; + bool m_view_structure_only; bool send_data_to_variable_list(List<sp_variable> &vars, List<Item> &items); public: - Select_fetch_into_spvars(THD *thd_arg): select_result_interceptor(thd_arg) {} + Select_fetch_into_spvars(THD *thd_arg, bool view_structure_only) + :select_result_interceptor(thd_arg), + m_view_structure_only(view_structure_only) + {} void reset(THD *thd_arg) { select_result_interceptor::reset(thd_arg); @@ -5171,16 +5183,17 @@ private: virtual bool send_eof() { return FALSE; } virtual int send_data(List<Item> &items); virtual int prepare(List<Item> &list, SELECT_LEX_UNIT *u); + virtual bool view_structure_only() const { return m_view_structure_only; } }; public: sp_cursor() - :result(NULL), + :result(NULL, false), m_lex_keeper(NULL), server_side_cursor(NULL) { } - sp_cursor(THD *thd_arg, sp_lex_keeper *lex_keeper) - :result(thd_arg), + sp_cursor(THD *thd_arg, sp_lex_keeper *lex_keeper, bool view_structure_only) + :result(thd_arg, view_structure_only), m_lex_keeper(lex_keeper), server_side_cursor(NULL) {} @@ -5192,8 +5205,6 @@ public: int open(THD *thd); - int open_view_structure_only(THD *thd); - int close(THD *thd); my_bool is_open() |