diff options
Diffstat (limited to 'sql/sp_rcontext.h')
| -rw-r--r-- | sql/sp_rcontext.h | 70 |
1 files changed, 49 insertions, 21 deletions
diff --git a/sql/sp_rcontext.h b/sql/sp_rcontext.h index 36380952e5d..22fa4f6e865 100644 --- a/sql/sp_rcontext.h +++ b/sql/sp_rcontext.h @@ -58,7 +58,6 @@ class sp_rcontext : public Sql_alloc public: - bool in_handler; /* Arena used to (re) allocate items on . E.g. reallocate INOUT/OUT SP parameters when they don't fit into prealloced items. This @@ -169,6 +168,18 @@ class sp_rcontext : public Sql_alloc return m_hstack[--m_hsp]; } + inline void + enter_handler(int hid) + { + m_in_handler[m_ihsp++]= hid; + } + + inline void + exit_handler() + { + m_ihsp-= 1; + } + // Save variables starting at fp and up void save_variables(uint fp); @@ -203,12 +214,14 @@ private: Item *m_result; // For FUNCTIONs - sp_handler_t *m_handler; - uint m_hcount; - uint *m_hstack; - uint m_hsp; - int m_hfound; // Set by find_handler; -1 if not found - List<Item> m_saved; // Saved variables + sp_handler_t *m_handler; // Visible handlers + uint m_hcount; // Stack pointer for m_handler + uint *m_hstack; // Return stack for continue handlers + uint m_hsp; // Stack pointer for m_hstack + uint *m_in_handler; // Active handler, for recursion check + uint m_ihsp; // Stack pointer for m_in_handler + int m_hfound; // Set by find_handler; -1 if not found + List<Item> m_saved; // Saved variables during handler exec. sp_cursor **m_cstack; uint m_ccount; @@ -216,6 +229,27 @@ private: }; // class sp_rcontext : public Sql_alloc +/* + An interceptor of cursor result set used to implement + FETCH <cname> INTO <varlist>. +*/ + +class Select_fetch_into_spvars: public select_result_interceptor +{ + List<struct sp_pvar> *spvar_list; + uint field_count; +public: + uint get_field_count() { return field_count; } + void set_spvar_list(List<struct sp_pvar> *vars) { spvar_list= vars; } + + virtual bool send_eof() { return FALSE; } + virtual bool send_data(List<Item> &items); + virtual int prepare(List<Item> &list, SELECT_LEX_UNIT *u); +}; + + +/* A mediator between stored procedures and server side cursors */ + class sp_cursor : public Sql_alloc { public: @@ -227,12 +261,11 @@ public: destroy(); } - // We have split this in two to make it easy for sp_instr_copen - // to reuse the sp_instr::exec_stmt() code. sp_lex_keeper * - pre_open(THD *thd); - void - post_open(THD *thd, my_bool was_opened); + get_lex_keeper() { return m_lex_keeper; } + + int + open(THD *thd); int close(THD *thd); @@ -240,7 +273,7 @@ public: inline my_bool is_open() { - return m_isopen; + return test(server_side_cursor); } int @@ -251,18 +284,13 @@ public: { return m_i; } - + private: - MEM_ROOT m_mem_root; // My own mem_root + Select_fetch_into_spvars result; sp_lex_keeper *m_lex_keeper; - Protocol_cursor *m_prot; - my_bool m_isopen; - my_bool m_nseof; // Original no_send_eof - Protocol *m_oprot; // Original protcol - MYSQL_ROWS *m_current_row; + Server_side_cursor *server_side_cursor; sp_instr_cpush *m_i; // My push instruction - void destroy(); |