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?? ..
?? aligned.h(1.11 KB)
?? aria_backup.h(1.51 KB)
?? assume_aligned.h(2.29 KB)
?? atomic
?? authors.h(9.9 KB)
?? backup.h(1.66 KB)
?? bounded_queue.h(5.95 KB)
?? char_buffer.h(3.09 KB)
?? charset_collations.h(6.41 KB)
?? client_settings.h(1.87 KB)
?? compat56.h(2.23 KB)
?? config.h(14.21 KB)
?? contributors.h(4.76 KB)
?? create_options.h(4.09 KB)
?? create_tmp_table.h(2.74 KB)
?? cset_narrowing.h(3.88 KB)
?? custom_conf.h(1.06 KB)
?? data
?? datadict.h(1.66 KB)
?? ddl_log.h(12.51 KB)
?? debug.h(1.26 KB)
?? debug_sync.h(2 KB)
?? deprecation.h(2.74 KB)
?? derived_handler.h(2.32 KB)
?? derror.h(980 B)
?? des_key_file.h(1.21 KB)
?? discover.h(1.53 KB)
?? dur_prop.h(1.06 KB)
?? embedded_priv.h(1.69 KB)
?? event_data_objects.h(4.09 KB)
?? event_db_repository.h(3.56 KB)
?? event_parse_data.h(2.83 KB)
?? event_queue.h(3.36 KB)
?? event_scheduler.h(3.21 KB)
?? events.h(4.6 KB)
?? field.h(217.81 KB)
?? field_comp.h(1.15 KB)
?? filesort.h(7.13 KB)
?? filesort_utils.h(10.53 KB)
?? ft_global.h(3.04 KB)
?? gcalc_slicescan.h(16.87 KB)
?? gcalc_tools.h(11.62 KB)
?? grant.h(2.69 KB)
?? group_by_handler.h(3.45 KB)
?? gstream.h(2.38 KB)
?? gtid_index.h(19.54 KB)
?? ha_handler_stats.h(2.28 KB)
?? ha_partition.h(63.36 KB)
?? ha_sequence.h(6.1 KB)
?? handle_connections_win.h(884 B)
?? handler.h(206.19 KB)
?? hash.h(4.35 KB)
?? hash_filo.h(5.55 KB)
?? heap.h(9.26 KB)
?? hostname.h(5.29 KB)
?? ilist.h(6.98 KB)
?? init.h(852 B)
?? innodb_priv.h(1.29 KB)
?? item.h(276.43 KB)
?? item_cmpfunc.h(132.01 KB)
?? item_create.h(11.24 KB)
?? item_func.h(134.64 KB)
?? item_geofunc.h(38.16 KB)
?? item_jsonfunc.h(27.86 KB)
?? item_row.h(5.1 KB)
?? item_strfunc.h(75.33 KB)
?? item_subselect.h(57.63 KB)
?? item_sum.h(70.69 KB)
?? item_timefunc.h(63.85 KB)
?? item_vers.h(4.26 KB)
?? item_windowfunc.h(33.56 KB)
?? item_xmlfunc.h(4.52 KB)
?? json_schema.h(25.1 KB)
?? json_schema_helper.h(1.13 KB)
?? json_table.h(9.44 KB)
?? key.h(2.08 KB)
?? keycaches.h(1.94 KB)
?? lex.h(29.54 KB)
?? lex_charset.h(25.92 KB)
?? lex_hash.h(141.94 KB)
?? lex_ident.h(5.15 KB)
?? lex_string.h(4.77 KB)
?? lex_symbol.h(1.29 KB)
?? lex_token.h(42.01 KB)
?? lf.h(6.31 KB)
?? lock.h(2.2 KB)
?? log.h(51.28 KB)
?? log_cache.h(7.57 KB)
?? log_event.h(172.56 KB)
?? log_event_data_type.h(1.85 KB)
?? log_slow.h(2.38 KB)
?? maria.h(5.73 KB)
?? mariadb.h(1.25 KB)
?? mdl.h(37.65 KB)
?? mem_root_array.h(6.94 KB)
?? message.h(1.17 KB)
?? multi_range_read.h(22.65 KB)
?? my_apc.h(4.64 KB)
?? my_atomic.h(7.11 KB)
?? my_atomic_wrapper.h(2.98 KB)
?? my_base.h(27.28 KB)
?? my_bit.h(6.05 KB)
?? my_bitmap.h(5.37 KB)
?? my_check_opt.h(2.56 KB)
?? my_compare.h(10.87 KB)
?? my_counter.h(1.68 KB)
?? my_cpu.h(4.74 KB)
?? my_crypt.h(904 B)
?? my_decimal.h(14.15 KB)
?? my_default.h(1.84 KB)
?? my_handler_errors.h(4.77 KB)
?? my_json_writer.h(18.14 KB)
?? my_libwrap.h(1.16 KB)
?? my_md5.h(1.45 KB)
?? my_minidump.h(848 B)
?? my_nosys.h(1.4 KB)
?? my_rdtsc.h(9.88 KB)
?? my_rnd.h(1014 B)
?? my_service_manager.h(2.07 KB)
?? my_stack_alloc.h(6.34 KB)
?? my_stacktrace.h(3.14 KB)
?? my_time.h(10.17 KB)
?? my_tracker.h(1.37 KB)
?? my_tree.h(3.9 KB)
?? my_uctype.h(67.9 KB)
?? my_user.h(1.1 KB)
?? my_virtual_mem.h(1.1 KB)
?? myisam.h(17.18 KB)
?? myisamchk.h(4.62 KB)
?? myisammrg.h(4.78 KB)
?? myisampack.h(14.58 KB)
?? mysqld.h(41.11 KB)
?? mysqld_default_groups.h(204 B)
?? mysqld_suffix.h(1.17 KB)
?? mysys_err.h(2.99 KB)
?? opt_histogram_json.h(4.71 KB)
?? opt_range.h(64.78 KB)
?? opt_rewrite_date_cmp.h(3.84 KB)
?? opt_subselect.h(14.78 KB)
?? opt_trace.h(8.29 KB)
?? opt_trace_context.h(3.21 KB)
?? optimizer_costs.h(5.89 KB)
?? optimizer_defaults.h(7.37 KB)
?? parse_file.h(4.28 KB)
?? partition_element.h(5.3 KB)
?? partition_info.h(19.4 KB)
?? password.h(1.14 KB)
?? pfs_file_provider.h(3.08 KB)
?? pfs_idle_provider.h(1.35 KB)
?? pfs_memory_provider.h(1.59 KB)
?? pfs_metadata_provider.h(1.85 KB)
?? pfs_socket_provider.h(2.21 KB)
?? pfs_stage_provider.h(1.52 KB)
?? pfs_statement_provider.h(4.25 KB)
?? pfs_table_provider.h(2.56 KB)
?? pfs_thread_provider.h(5.43 KB)
?? pfs_transaction_provider.h(2.78 KB)
?? privilege.h(28.44 KB)
?? probes_mysql.h(973 B)
?? probes_mysql_dtrace.h(32.23 KB)
?? probes_mysql_nodtrace.h(5.94 KB)
?? procedure.h(6.63 KB)
?? protocol.h(12.27 KB)
?? providers
?? proxy_protocol.h(548 B)
?? queues.h(3.4 KB)
?? records.h(3.07 KB)
?? repl_failsafe.h(1.55 KB)
?? replication.h(15.2 KB)
?? rijndael.h(1.67 KB)
?? rowid_filter.h(16.03 KB)
?? rpl_constants.h(3.28 KB)
?? rpl_filter.h(4.66 KB)
?? rpl_gtid.h(29.95 KB)
?? rpl_injector.h(9.4 KB)
?? rpl_mi.h(16.29 KB)
?? rpl_parallel.h(17.8 KB)
?? rpl_record.h(1.49 KB)
?? rpl_reporting.h(3.63 KB)
?? rpl_rli.h(35.02 KB)
?? rpl_tblmap.h(3.1 KB)
?? rpl_utility.h(10.93 KB)
?? scheduler.h(3.12 KB)
?? scope.h(4.29 KB)
?? select_handler.h(3.34 KB)
?? semisync.h(2.23 KB)
?? semisync_master.h(25.16 KB)
?? semisync_master_ack_receiver.h(8.5 KB)
?? semisync_slave.h(3.65 KB)
?? service_versions.h(2.23 KB)
?? session_tracker.h(13.75 KB)
?? set_var.h(16.39 KB)
?? simple_tokenizer.h(1.97 KB)
?? slave.h(11.99 KB)
?? socketpair.h(842 B)
?? source_revision.h(67 B)
?? sp.h(23.11 KB)
?? sp_cache.h(1.99 KB)
?? sp_head.h(38.61 KB)
?? sp_instr.h(40.41 KB)
?? sp_pcontext.h(24.71 KB)
?? sp_rcontext.h(14.08 KB)
?? span.h(3.84 KB)
?? spatial.h(21.78 KB)
?? sql_acl.h(13.75 KB)
?? sql_admin.h(2.85 KB)
?? sql_alloc.h(1.69 KB)
?? sql_alter.h(15.08 KB)
?? sql_analyse.h(10.86 KB)
?? sql_analyze_stmt.h(12.4 KB)
?? sql_array.h(6.97 KB)
?? sql_audit.h(13.83 KB)
?? sql_base.h(25.87 KB)
?? sql_basic_types.h(9.3 KB)
?? sql_binlog.h(895 B)
?? sql_bitmap.h(7.88 KB)
?? sql_bootstrap.h(1.77 KB)
?? sql_cache.h(21.34 KB)
?? sql_callback.h(1.51 KB)
?? sql_class.h(270.56 KB)
?? sql_cmd.h(15.11 KB)
?? sql_connect.h(3.96 KB)
?? sql_const.h(10.07 KB)
?? sql_crypt.h(1.4 KB)
?? sql_cte.h(16.15 KB)
?? sql_cursor.h(4.14 KB)
?? sql_db.h(2.28 KB)
?? sql_debug.h(5.51 KB)
?? sql_delete.h(3.52 KB)
?? sql_derived.h(1.26 KB)
?? sql_digest.h(3.73 KB)
?? sql_digest_stream.h(1.53 KB)
?? sql_do.h(954 B)
?? sql_error.h(39.39 KB)
?? sql_explain.h(30.39 KB)
?? sql_expression_cache.h(4.26 KB)
?? sql_get_diagnostics.h(7.7 KB)
?? sql_handler.h(2.84 KB)
?? sql_help.h(995 B)
?? sql_hset.h(3.32 KB)
?? sql_i_s.h(8.29 KB)
?? sql_insert.h(5.05 KB)
?? sql_join_cache.h(47.52 KB)
?? sql_lex.h(174.22 KB)
?? sql_lifo_buffer.h(9.45 KB)
?? sql_limit.h(3.11 KB)
?? sql_list.h(21.87 KB)
?? sql_load.h(1.25 KB)
?? sql_locale.h(3.16 KB)
?? sql_manager.h(960 B)
?? sql_mode.h(6.58 KB)
?? sql_parse.h(8.31 KB)
?? sql_partition.h(12.38 KB)
?? sql_partition_admin.h(5.8 KB)
?? sql_plist.h(7.53 KB)
?? sql_plugin.h(7.4 KB)
?? sql_plugin_compat.h(2.18 KB)
?? sql_prepare.h(11.4 KB)
?? sql_priv.h(15.08 KB)
?? sql_profile.h(7.63 KB)
?? sql_reload.h(1.01 KB)
?? sql_rename.h(982 B)
?? sql_repl.h(2.99 KB)
?? sql_schema.h(3.23 KB)
?? sql_select.h(91 KB)
?? sql_sequence.h(5.06 KB)
?? sql_servers.h(1.74 KB)
?? sql_show.h(9.73 KB)
?? sql_signal.h(3.28 KB)
?? sql_sort.h(21.96 KB)
?? sql_statistics.h(16.41 KB)
?? sql_string.h(37.92 KB)
?? sql_table.h(9.52 KB)
?? sql_test.h(1.55 KB)
?? sql_time.h(7.24 KB)
?? sql_trigger.h(11.88 KB)
?? sql_truncate.h(2.03 KB)
?? sql_tvc.h(2.36 KB)
?? sql_type.h(291.25 KB)
?? sql_type_fixedbin.h(63.94 KB)
?? sql_type_fixedbin_storage.h(5.34 KB)
?? sql_type_geom.h(18.59 KB)
?? sql_type_int.h(9.77 KB)
?? sql_type_json.h(6.01 KB)
?? sql_type_real.h(1.23 KB)
?? sql_type_string.h(1.59 KB)
?? sql_type_timeofday.h(2.26 KB)
?? sql_udf.h(4.74 KB)
?? sql_union.h(1.04 KB)
?? sql_update.h(3.55 KB)
?? sql_used.h(1.02 KB)
?? sql_view.h(2.41 KB)
?? sql_window.h(6.65 KB)
?? ssl_compat.h(3.3 KB)
?? strfunc.h(2.22 KB)
?? structs.h(30.55 KB)
?? sys_vars_shared.h(2.67 KB)
?? t_ctype.h(5.51 KB)
?? table.h(118.11 KB)
?? table_cache.h(4.13 KB)
?? thr_lock.h(7.06 KB)
?? thr_malloc.h(1.17 KB)
?? thr_timer.h(1.53 KB)
?? thread_cache.h(5.77 KB)
?? threadpool.h(4.7 KB)
?? threadpool_generic.h(3.88 KB)
?? threadpool_winsockets.h(2.24 KB)
?? transaction.h(1.43 KB)
?? tzfile.h(4.9 KB)
?? tztime.h(3.65 KB)
?? uniques.h(4.13 KB)
?? unireg.h(7.76 KB)
?? vers_string.h(2.39 KB)
?? violite.h(9.85 KB)
?? waiting_threads.h(4.43 KB)
?? welcome_copyright_notice.h(1.42 KB)
?? winservice.h(5.88 KB)
?? wqueue.h(1.53 KB)
?? wsrep.h(3.23 KB)
?? wsrep_allowlist_service.h(1.01 KB)
?? wsrep_applier.h(2.64 KB)
?? wsrep_binlog.h(3.36 KB)
?? wsrep_client_service.h(2.5 KB)
?? wsrep_client_state.h(1.53 KB)
?? wsrep_condition_variable.h(1.45 KB)
?? wsrep_event_service.h(1.32 KB)
?? wsrep_high_priority_service.h(4.8 KB)
?? wsrep_mutex.h(1.21 KB)
?? wsrep_mysqld.h(20.93 KB)
?? wsrep_mysqld_c.h(1.2 KB)
?? wsrep_on.h(1.68 KB)
?? wsrep_plugin.h(1.35 KB)
?? wsrep_priv.h(1.6 KB)
?? wsrep_schema.h(5.48 KB)
?? wsrep_server_service.h(3.55 KB)
?? wsrep_server_state.h(3.06 KB)
?? wsrep_sst.h(3.86 KB)
?? wsrep_status.h(1.93 KB)
?? wsrep_storage_service.h(1.77 KB)
?? wsrep_thd.h(10.9 KB)
?? wsrep_trans_observer.h(17.75 KB)
?? wsrep_types.h(1.08 KB)
?? wsrep_utils.h(9.58 KB)
?? wsrep_var.h(4.25 KB)
?? wsrep_xid.h(1.51 KB)
?? xa.h(1.86 KB)

Editing: sp.h

/* -*- C++ -*- */
/* Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
   Copyright (c) 2009, 2020, MariaDB Corporation.

This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; version 2 of the License.

This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335  USA */

#ifndef _SP_H_
#define _SP_H_

#include "my_global.h"                          /* NO_EMBEDDED_ACCESS_CHECKS */
#include "sql_string.h"                         // LEX_STRING
#include "sql_cmd.h"
#include "mdl.h"

class Field;
class Open_tables_backup;
class Open_tables_state;
class Query_arena;
class Query_tables_list;
class Sroutine_hash_entry;
class THD;
class sp_cache;
class sp_head;
class sp_package;
class sp_pcontext;
class sp_name;
class sp_expr_lex;
class Database_qualified_name;
struct st_sp_chistics;
class Stored_program_creation_ctx;
struct LEX;
struct TABLE;
struct TABLE_LIST;
typedef struct st_hash HASH;
template <typename T> class SQL_I_List;

/*
  Values for the type enum. This reflects the order of the enum declaration
  in the CREATE TABLE command.
  See also storage/perfschema/my_thread.h
*/
enum enum_sp_type
{
  SP_TYPE_FUNCTION=1,
  SP_TYPE_PROCEDURE=2,
  SP_TYPE_PACKAGE=3,
  SP_TYPE_PACKAGE_BODY=4,
  SP_TYPE_TRIGGER=5,
  SP_TYPE_EVENT=6,
};

class Sp_handler
{
  bool sp_resolve_package_routine_explicit(THD *thd,
                                           sp_head *caller,
                                           sp_name *name,
                                           const Sp_handler **pkg_routine_hndlr,
                                           Database_qualified_name *pkgname)
                                           const;
  bool sp_resolve_package_routine_implicit(THD *thd,
                                           sp_head *caller,
                                           sp_name *name,
                                           const Sp_handler **pkg_routine_hndlr,
                                           Database_qualified_name *pkgname)
                                           const;
protected:
  int db_find_routine_aux(THD *thd, const Database_qualified_name *name,
                          TABLE *table) const;
  int db_find_routine(THD *thd, const Database_qualified_name *name,
                      sp_head **sphp) const;
  int db_find_and_cache_routine(THD *thd,
                                const Database_qualified_name *name,
                                sp_head **sp) const;
  int db_load_routine(THD *thd, const Database_qualified_name *name,
                      sp_head **sphp,
                      sql_mode_t sql_mode,
                      const LEX_CSTRING &params,
                      const LEX_CSTRING &returns,
                      const LEX_CSTRING &body,
                      const st_sp_chistics &chistics,
                      const AUTHID &definer,
                      longlong created, longlong modified,
                      sp_package *parent,
                      Stored_program_creation_ctx *creation_ctx) const;
  int sp_drop_routine_internal(THD *thd,
                               const Database_qualified_name *name,
                               TABLE *table) const;

sp_head *sp_clone_and_link_routine(THD *thd,
                                     const Database_qualified_name *name,
                                     sp_head *sp) const;
  int sp_cache_package_routine(THD *thd,
                               const LEX_CSTRING &pkgname_cstr,
                               const Database_qualified_name *name,
                               sp_head **sp) const;
  int sp_cache_package_routine(THD *thd,
                               const Database_qualified_name *name,
                               sp_head **sp) const;
  sp_head *sp_find_package_routine(THD *thd,
                                   const LEX_CSTRING pkgname_str,
                                   const Database_qualified_name *name,
                                   bool cache_only) const;
  sp_head *sp_find_package_routine(THD *thd,
                                   const Database_qualified_name *name,
                                   bool cache_only) const;
public: // TODO: make it private or protected
  virtual int sp_find_and_drop_routine(THD *thd, TABLE *table,
                                       const Database_qualified_name *name)
                                       const;

public:
  virtual ~Sp_handler() = default;
  static const Sp_handler *handler(enum enum_sql_command cmd);
  static const Sp_handler *handler(enum_sp_type type);
  static const Sp_handler *handler(MDL_key::enum_mdl_namespace ns);
  /*
    Return a handler only those SP objects that store
    definitions in the mysql.proc system table
  */
  static const Sp_handler *handler_mysql_proc(enum_sp_type type)
  {
    const Sp_handler *sph= handler(type);
    return sph ? sph->sp_handler_mysql_proc() : NULL;
  }

static bool eq_routine_name(const LEX_CSTRING &name1,
                              const LEX_CSTRING &name2)
  {
    return system_charset_info->strnncoll(name1.str, name1.length,
                                          name2.str, name2.length) == 0;
  }
  const char *type_str() const { return type_lex_cstring().str; }
  virtual const char *show_create_routine_col1_caption() const
  {
    DBUG_ASSERT(0);
    return "";
  }
  virtual const char *show_create_routine_col3_caption() const
  {
    DBUG_ASSERT(0);
    return "";
  }
  virtual const Sp_handler *package_routine_handler() const
  {
    return this;
  }
  virtual enum_sp_type type() const= 0;
  virtual LEX_CSTRING type_lex_cstring() const= 0;
  virtual enum_sql_command sqlcom_create() const= 0;
  virtual enum_sql_command sqlcom_drop() const= 0;
  virtual LEX_CSTRING empty_body_lex_cstring(sql_mode_t mode) const
  {
    static LEX_CSTRING m_empty_body= {STRING_WITH_LEN("???")};
    DBUG_ASSERT(0);
    return m_empty_body;
  }
  virtual MDL_key::enum_mdl_namespace get_mdl_type() const= 0;
  virtual const Sp_handler *sp_handler_mysql_proc() const { return this; }
  virtual sp_cache **get_cache(THD *) const { return NULL; }
#ifndef NO_EMBEDDED_ACCESS_CHECKS
  virtual HASH *get_priv_hash() const { return NULL; }
#endif
  virtual ulong recursion_depth(THD *thd) const { return 0; }
  /**
    Return appropriate error about recursion limit reaching

@param thd  Thread handle
    @param sp   SP routine

@remark For functions and triggers we return error about
            prohibited recursion. For stored procedures we
            return about reaching recursion limit.
  */
  virtual void recursion_level_error(THD *thd, const sp_head *sp) const
  {
    my_error(ER_SP_NO_RECURSION, MYF(0));
  }
  virtual bool add_instr_freturn(THD *thd, sp_head *sp,
                                 sp_pcontext *spcont,
                                 Item *item, sp_expr_lex *lex) const;
  virtual bool add_instr_preturn(THD *thd, sp_head *sp,
                                 sp_pcontext *spcont) const;

void add_used_routine(Query_tables_list *prelocking_ctx,
                        Query_arena *arena,
                        const Database_qualified_name *name) const;

bool sp_resolve_package_routine(THD *thd,
                                  sp_head *caller,
                                  sp_name *name,
                                  const Sp_handler **pkg_routine_handler,
                                  Database_qualified_name *pkgname) const;
  virtual sp_head *sp_find_routine(THD *thd,
                                   const Database_qualified_name *name,
                                   bool cache_only) const;
  virtual int sp_cache_routine(THD *thd, const Database_qualified_name *name,
                               sp_head **sp) const;

int sp_cache_routine_reentrant(THD *thd,
                                 const Database_qualified_name *nm,
                                 sp_head **sp) const;

bool sp_exist_routines(THD *thd, TABLE_LIST *procs) const;
  bool sp_show_create_routine(THD *thd,
                              const Database_qualified_name *name) const;

bool sp_create_routine(THD *thd, const sp_head *sp) const;

int sp_update_routine(THD *thd, const Database_qualified_name *name,
                        const st_sp_chistics *chistics) const;

int sp_drop_routine(THD *thd, const Database_qualified_name *name) const;

sp_head *sp_load_for_information_schema(THD *thd, TABLE *proc_table,
                                          const LEX_CSTRING &db,
                                          const LEX_CSTRING &name,
                                          const LEX_CSTRING &params,
                                          const LEX_CSTRING &returns,
                                          sql_mode_t sql_mode,
                                          bool *free_sp_head) const;

/*
    Make a SHOW CREATE statement.
      @retval   true on error
      @retval   false on success
  */
  virtual bool show_create_sp(THD *thd, String *buf,
                              const LEX_CSTRING &db,
                              const LEX_CSTRING &name,
                              const LEX_CSTRING &params,
                              const LEX_CSTRING &returns,
                              const LEX_CSTRING &body,
                              const st_sp_chistics &chistics,
                              const AUTHID &definer,
                              const DDL_options_st ddl_options,
                              sql_mode_t sql_mode) const;

};

class Sp_handler_procedure: public Sp_handler
{
public:
  enum_sp_type type() const override { return SP_TYPE_PROCEDURE; }
  LEX_CSTRING type_lex_cstring() const override
  {
    static LEX_CSTRING m_type_str= { STRING_WITH_LEN("PROCEDURE")};
    return m_type_str;
  }
  enum_sql_command sqlcom_create() const override
  {
    return SQLCOM_CREATE_PROCEDURE;
  }
  enum_sql_command sqlcom_drop() const override
  {
    return SQLCOM_DROP_PROCEDURE;
  }
  LEX_CSTRING empty_body_lex_cstring(sql_mode_t mode) const override;
  const char *show_create_routine_col1_caption() const override
  {
    return "Procedure";
  }
  const char *show_create_routine_col3_caption() const override
  {
    return "Create Procedure";
  }
  MDL_key::enum_mdl_namespace get_mdl_type() const override
  {
    return MDL_key::PROCEDURE;
  }
  const Sp_handler *package_routine_handler() const override;
  sp_cache **get_cache(THD *) const override;
#ifndef NO_EMBEDDED_ACCESS_CHECKS
  HASH *get_priv_hash() const override;
#endif
  ulong recursion_depth(THD *thd) const override;
  void recursion_level_error(THD *thd, const sp_head *sp) const override;
  bool add_instr_preturn(THD *thd, sp_head *sp, sp_pcontext *spcont) const override;
};

class Sp_handler_package_procedure: public Sp_handler_procedure
{
public:
  int sp_cache_routine(THD *thd, const Database_qualified_name *name,
                       sp_head **sp) const override
  {
    return sp_cache_package_routine(thd, name, sp);
  }
  sp_head *sp_find_routine(THD *thd,
                           const Database_qualified_name *name,
                           bool cache_only) const override
  {
    return sp_find_package_routine(thd, name, cache_only);
  }
};

class Sp_handler_function: public Sp_handler
{
public:
  enum_sp_type type() const override { return SP_TYPE_FUNCTION; }
  LEX_CSTRING type_lex_cstring() const override
  {
    static LEX_CSTRING m_type_str= { STRING_WITH_LEN("FUNCTION")};
    return m_type_str;
  }
  enum_sql_command sqlcom_create() const override
  {
    return SQLCOM_CREATE_FUNCTION;
  }
  enum_sql_command sqlcom_drop() const override
  {
    return SQLCOM_DROP_FUNCTION;
  }
  LEX_CSTRING empty_body_lex_cstring(sql_mode_t mode) const override;
  const char *show_create_routine_col1_caption() const override
  {
    return "Function";
  }
  const char *show_create_routine_col3_caption() const override
  {
    return "Create Function";
  }
  MDL_key::enum_mdl_namespace get_mdl_type() const override
  {
    return MDL_key::FUNCTION;
  }
  const Sp_handler *package_routine_handler() const override;
  sp_cache **get_cache(THD *) const override;
#ifndef NO_EMBEDDED_ACCESS_CHECKS
  HASH *get_priv_hash() const override;
#endif
  bool add_instr_freturn(THD *thd, sp_head *sp, sp_pcontext *spcont,
                         Item *item, sp_expr_lex *lex) const override;
};

class Sp_handler_package_function: public Sp_handler_function
{
public:
  int sp_cache_routine(THD *thd, const Database_qualified_name *name,
                       sp_head **sp) const override
  {
    return sp_cache_package_routine(thd, name, sp);
  }
  sp_head *sp_find_routine(THD *thd,
                           const Database_qualified_name *name,
                           bool cache_only) const override
  {
    return sp_find_package_routine(thd, name, cache_only);
  }
};

class Sp_handler_package: public Sp_handler
{
public:
  bool show_create_sp(THD *thd, String *buf,
                      const LEX_CSTRING &db,
                      const LEX_CSTRING &name,
                      const LEX_CSTRING &params,
                      const LEX_CSTRING &returns,
                      const LEX_CSTRING &body,
                      const st_sp_chistics &chistics,
                      const AUTHID &definer,
                      const DDL_options_st ddl_options,
                      sql_mode_t sql_mode) const override;
};

class Sp_handler_package_spec: public Sp_handler_package
{
public: // TODO: make it private or protected
  int sp_find_and_drop_routine(THD *thd, TABLE *table,
                               const Database_qualified_name *name)
                               const override;
public:
  enum_sp_type type() const override { return SP_TYPE_PACKAGE; }
  LEX_CSTRING type_lex_cstring() const override
  {
    static LEX_CSTRING m_type_str= {STRING_WITH_LEN("PACKAGE")};
    return m_type_str;
  }
  enum_sql_command sqlcom_create() const override
  {
    return SQLCOM_CREATE_PACKAGE;
  }
  enum_sql_command sqlcom_drop() const override
  {
    return SQLCOM_DROP_PACKAGE;
  }
  LEX_CSTRING empty_body_lex_cstring(sql_mode_t mode) const override
  {
    static LEX_CSTRING m_empty_body= {STRING_WITH_LEN("BEGIN END")};
    return m_empty_body;
  }
  const char *show_create_routine_col1_caption() const override
  {
    return "Package";
  }
  const char *show_create_routine_col3_caption() const override
  {
    return "Create Package";
  }
  MDL_key::enum_mdl_namespace get_mdl_type() const override
  {
    return MDL_key::PACKAGE_BODY;
  }
  sp_cache **get_cache(THD *) const override;
#ifndef NO_EMBEDDED_ACCESS_CHECKS
  HASH *get_priv_hash() const override;
#endif
};

class Sp_handler_package_body: public Sp_handler_package
{
public:
  enum_sp_type type() const override { return SP_TYPE_PACKAGE_BODY; }
  LEX_CSTRING type_lex_cstring() const override
  {
    static LEX_CSTRING m_type_str= {STRING_WITH_LEN("PACKAGE BODY")};
    return m_type_str;
  }
  enum_sql_command sqlcom_create() const override
  {
    return SQLCOM_CREATE_PACKAGE_BODY;
  }
  enum_sql_command sqlcom_drop() const override
  {
    return SQLCOM_DROP_PACKAGE_BODY;
  }
  LEX_CSTRING empty_body_lex_cstring(sql_mode_t mode) const override
  {
    static LEX_CSTRING m_empty_body= {STRING_WITH_LEN("BEGIN END")};
    return m_empty_body;
  }
  const char *show_create_routine_col1_caption() const override
  {
    return "Package body";
  }
  const char *show_create_routine_col3_caption() const override
  {
    return "Create Package Body";
  }
  MDL_key::enum_mdl_namespace get_mdl_type() const override
  {
    return MDL_key::PACKAGE_BODY;
  }
  sp_cache **get_cache(THD *) const override;
#ifndef NO_EMBEDDED_ACCESS_CHECKS
  HASH *get_priv_hash() const override;
#endif
};

class Sp_handler_trigger: public Sp_handler
{
public:
  enum_sp_type type() const override { return SP_TYPE_TRIGGER; }
  LEX_CSTRING type_lex_cstring() const override
  {
    static LEX_CSTRING m_type_str= { STRING_WITH_LEN("TRIGGER")};
    return m_type_str;
  }
  enum_sql_command sqlcom_create() const override
  {
    return SQLCOM_CREATE_TRIGGER;
  }
  enum_sql_command sqlcom_drop() const override
  {
    return SQLCOM_DROP_TRIGGER;
  }
  MDL_key::enum_mdl_namespace get_mdl_type() const override
  {
    DBUG_ASSERT(0);
    return MDL_key::TRIGGER;
  }
  const Sp_handler *sp_handler_mysql_proc() const override { return NULL; }
};

extern MYSQL_PLUGIN_IMPORT Sp_handler_function sp_handler_function;
extern MYSQL_PLUGIN_IMPORT Sp_handler_procedure sp_handler_procedure;
extern MYSQL_PLUGIN_IMPORT Sp_handler_package_spec sp_handler_package_spec;
extern MYSQL_PLUGIN_IMPORT Sp_handler_package_body sp_handler_package_body;
extern MYSQL_PLUGIN_IMPORT Sp_handler_package_function sp_handler_package_function;
extern MYSQL_PLUGIN_IMPORT Sp_handler_package_procedure sp_handler_package_procedure;
extern MYSQL_PLUGIN_IMPORT Sp_handler_trigger sp_handler_trigger;

inline const Sp_handler *Sp_handler::handler(enum_sql_command cmd)
{
  switch (cmd) {
  case SQLCOM_CREATE_PROCEDURE:
  case SQLCOM_ALTER_PROCEDURE:
  case SQLCOM_DROP_PROCEDURE:
  case SQLCOM_SHOW_PROC_CODE:
  case SQLCOM_SHOW_CREATE_PROC:
  case SQLCOM_SHOW_STATUS_PROC:
    return &sp_handler_procedure;
  case SQLCOM_CREATE_SPFUNCTION:
  case SQLCOM_ALTER_FUNCTION:
  case SQLCOM_DROP_FUNCTION:
  case SQLCOM_SHOW_FUNC_CODE:
  case SQLCOM_SHOW_CREATE_FUNC:
  case SQLCOM_SHOW_STATUS_FUNC:
    return &sp_handler_function;
  case SQLCOM_CREATE_PACKAGE:
  case SQLCOM_DROP_PACKAGE:
  case SQLCOM_SHOW_CREATE_PACKAGE:
  case SQLCOM_SHOW_STATUS_PACKAGE:
    return &sp_handler_package_spec;
  case SQLCOM_CREATE_PACKAGE_BODY:
  case SQLCOM_DROP_PACKAGE_BODY:
  case SQLCOM_SHOW_CREATE_PACKAGE_BODY:
  case SQLCOM_SHOW_STATUS_PACKAGE_BODY:
  case SQLCOM_SHOW_PACKAGE_BODY_CODE:
    return &sp_handler_package_body;
  default:
    break;
  }
  return NULL;
}

inline const Sp_handler *Sp_handler::handler(enum_sp_type type)
{
  switch (type) {
  case SP_TYPE_PROCEDURE:
    return &sp_handler_procedure;
  case SP_TYPE_FUNCTION:
    return &sp_handler_function;
  case SP_TYPE_PACKAGE:
    return &sp_handler_package_spec;
  case SP_TYPE_PACKAGE_BODY:
    return &sp_handler_package_body;
  case SP_TYPE_TRIGGER:
    return &sp_handler_trigger;
  case SP_TYPE_EVENT:
    break;
  }
  return NULL;
}

inline const Sp_handler *Sp_handler::handler(MDL_key::enum_mdl_namespace type)
{
  switch (type) {
  case MDL_key::FUNCTION:
    return &sp_handler_function;
  case MDL_key::PROCEDURE:
    return &sp_handler_procedure;
  case MDL_key::PACKAGE_BODY:
    return &sp_handler_package_body;
  case MDL_key::BACKUP:
  case MDL_key::SCHEMA:
  case MDL_key::TABLE:
  case MDL_key::TRIGGER:
  case MDL_key::EVENT:
  case MDL_key::USER_LOCK:
  case MDL_key::NAMESPACE_END:
    break;
  }
  return NULL;
}

/* Tells what SP_DEFAULT_ACCESS should be mapped to */
#define SP_DEFAULT_ACCESS_MAPPING SP_CONTAINS_SQL

// Return codes from sp_create_*, sp_drop_*, and sp_show_*:
#define SP_OK                 0
#define SP_KEY_NOT_FOUND     -1
#define SP_OPEN_TABLE_FAILED -2
#define SP_WRITE_ROW_FAILED  -3
#define SP_DELETE_ROW_FAILED -4
#define SP_GET_FIELD_FAILED  -5
#define SP_PARSE_ERROR       -6
#define SP_INTERNAL_ERROR    -7
#define SP_NO_DB_ERROR       -8
#define SP_BAD_IDENTIFIER    -9
#define SP_BODY_TOO_LONG    -10
#define SP_FLD_STORE_FAILED -11

/* DB storage of Stored PROCEDUREs and FUNCTIONs */
enum
{
  MYSQL_PROC_FIELD_DB = 0,
  MYSQL_PROC_FIELD_NAME,
  MYSQL_PROC_MYSQL_TYPE,
  MYSQL_PROC_FIELD_SPECIFIC_NAME,
  MYSQL_PROC_FIELD_LANGUAGE,
  MYSQL_PROC_FIELD_ACCESS,
  MYSQL_PROC_FIELD_DETERMINISTIC,
  MYSQL_PROC_FIELD_SECURITY_TYPE,
  MYSQL_PROC_FIELD_PARAM_LIST,
  MYSQL_PROC_FIELD_RETURNS,
  MYSQL_PROC_FIELD_BODY,
  MYSQL_PROC_FIELD_DEFINER,
  MYSQL_PROC_FIELD_CREATED,
  MYSQL_PROC_FIELD_MODIFIED,
  MYSQL_PROC_FIELD_SQL_MODE,
  MYSQL_PROC_FIELD_COMMENT,
  MYSQL_PROC_FIELD_CHARACTER_SET_CLIENT,
  MYSQL_PROC_FIELD_COLLATION_CONNECTION,
  MYSQL_PROC_FIELD_DB_COLLATION,
  MYSQL_PROC_FIELD_BODY_UTF8,
  MYSQL_PROC_FIELD_AGGREGATE,
  MYSQL_PROC_FIELD_COUNT
};

/* Drop all routines in database 'db' */
int
sp_drop_db_routines(THD *thd, const LEX_CSTRING &db);

/**
   Acquires exclusive metadata lock on all stored routines in the
   given database.

@param  thd  Thread handler
   @param  db   Database name

@retval  false  Success
   @retval  true   Failure
 */
bool lock_db_routines(THD *thd, const Lex_ident_db_normalized &db);

/**
  Structure that represents element in the set of stored routines
  used by statement or routine.
*/

class Sroutine_hash_entry
{
public:
  /**
    Metadata lock request for routine.
    MDL_key in this request is also used as a key for set.
  */
  MDL_request mdl_request;
  /**
    Next element in list linking all routines in set. See also comments
    for LEX::sroutine/sroutine_list and sp_head::m_sroutines.
  */
  Sroutine_hash_entry *next;
  /**
    Uppermost view which directly or indirectly uses this routine.
    0 if routine is not used in view. Note that it also can be 0 if
    statement uses routine both via view and directly.
  */
  TABLE_LIST *belong_to_view;
  /**
    This is for prepared statement validation purposes.
    A statement looks up and pre-loads all its stored functions
    at prepare. Later on, if a function is gone from the cache,
    execute may fail.
    Remember the version of sp_head at prepare to be able to
    invalidate the prepared statement at execute if it
    changes.
  */
  ulong m_sp_cache_version;

const Sp_handler *m_handler;

int sp_cache_routine(THD *thd, sp_head **sp) const;
};

bool sp_add_used_routine(Query_tables_list *prelocking_ctx, Query_arena *arena,
                         const MDL_key *key,
                         const Sp_handler *handler,
                         TABLE_LIST *belong_to_view);
void sp_remove_not_own_routines(Query_tables_list *prelocking_ctx);
bool sp_update_sp_used_routines(HASH *dst, HASH *src);
void sp_update_stmt_used_routines(THD *thd, Query_tables_list *prelocking_ctx,
                                  HASH *src, TABLE_LIST *belong_to_view);
void sp_update_stmt_used_routines(THD *thd, Query_tables_list *prelocking_ctx,
                                  SQL_I_List<Sroutine_hash_entry> *src,
                                  TABLE_LIST *belong_to_view);

extern "C" const uchar *sp_sroutine_key(const void *ptr, size_t *plen,
                                        my_bool);

/*
  Routines which allow open/lock and close mysql.proc table even when
  we already have some tables open and locked.
*/
TABLE *open_proc_table_for_read(THD *thd);

bool load_charset(THD *thd,
                  MEM_ROOT *mem_root,
                  Field *field,
                  CHARSET_INFO *dflt_cs,
                  CHARSET_INFO **cs);

bool load_collation(THD *thd,MEM_ROOT *mem_root,
                    Field *field,
                    CHARSET_INFO *dflt_cl,
                    CHARSET_INFO **cl);

void sp_returns_type(THD *thd,
                     String &result,
                     const sp_head *sp);

#endif /* _SP_H_ */

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