A cleanup for MDEV-10577 and MDEV-13919: moving a few sp_rcontext methods

Moving a few methods from sp_rcontext to different classes:

- Table_ident::resolve_table_rowtype_ref
- Qualified_column_ident::resolve_type_ref
- Row_definition_list::resolve_table_rowtype_ref
- Row_definition_list::adjust_formal_params_to_actual_params

It easier to reuse these methods this way in the future.

sql/field.h

@@ -4095,6 +4095,8 @@ public:
     }
     return 0;
   }
+  bool adjust_formal_params_to_actual_params(THD *thd, List<Item> *args);
+  bool resolve_type_refs(THD *);
 };
 
 

sql/sp_rcontext.cc

@@ -73,15 +73,15 @@ sp_rcontext *sp_rcontext::create(THD *thd,
   if (!ctx)
     return NULL;
 
-  List<Spvar_definition> field_def_lst;
+  Row_definition_list field_def_lst;
   ctx->m_root_parsing_ctx->retrieve_field_definitions(&field_def_lst);
 
   if (args &&
-      ctx->adjust_formal_params_to_actual_params(thd, field_def_lst, args))
+      field_def_lst.adjust_formal_params_to_actual_params(thd, args))
     return NULL;
 
   if (ctx->alloc_arrays(thd) ||
-      (resolve_type_refs && ctx->resolve_type_refs(thd, field_def_lst)) ||
+      (resolve_type_refs && field_def_lst.resolve_type_refs(thd)) ||
       ctx->init_var_table(thd, field_def_lst) ||
       ctx->init_var_items(thd, field_def_lst))
   {
@@ -93,13 +93,12 @@ sp_rcontext *sp_rcontext::create(THD *thd,
 }
 
 
-bool sp_rcontext::adjust_formal_params_to_actual_params(THD *thd,
-                                         List<Spvar_definition> &field_def_lst,
-                                         List<Item> *args)
+bool Row_definition_list::
+       adjust_formal_params_to_actual_params(THD *thd, List<Item> *args)
 {
-  List_iterator<Spvar_definition> it(field_def_lst);
+  List_iterator<Spvar_definition> it(*this);
   List_iterator<Item> it_args(*args);
-  DBUG_ASSERT(field_def_lst.elements >= args->elements );
+  DBUG_ASSERT(elements >= args->elements );
   Spvar_definition *def;
   Item *arg;
   while ((def= it++) && (arg= it_args++))
@@ -169,8 +168,7 @@ check_column_grant_for_type_ref(THD *thd, TABLE_LIST *table_list,
 /**
   This method implementation is very close to fill_schema_table_by_open().
 */
-bool sp_rcontext::resolve_type_ref(THD *thd, Column_definition *def,
-                                   Qualified_column_ident *ref)
+bool Qualified_column_ident::resolve_type_ref(THD *thd, Column_definition *def)
 {
   Open_tables_backup open_tables_state_backup;
   thd->reset_n_backup_open_tables_state(&open_tables_state_backup);
@@ -187,18 +185,18 @@ bool sp_rcontext::resolve_type_ref(THD *thd, Column_definition *def,
   // Make %TYPE variables see temporary tables that shadow permanent tables
   thd->temporary_tables= open_tables_state_backup.temporary_tables;
 
-  if ((table_list= lex.select_lex.add_table_to_list(thd, ref, NULL, 0,
+  if ((table_list= lex.select_lex.add_table_to_list(thd, this, NULL, 0,
                                                     TL_READ_NO_INSERT,
                                                     MDL_SHARED_READ)) &&
       !check_table_access(thd, SELECT_ACL, table_list, TRUE, UINT_MAX, FALSE) &&
       !open_tables_only_view_structure(thd, table_list,
                                        thd->mdl_context.has_locks()))
   {
-    if ((src= lex.query_tables->table->find_field_by_name(&ref->m_column)))
+    if ((src= lex.query_tables->table->find_field_by_name(&m_column)))
     {
       if (!(rc= check_column_grant_for_type_ref(thd, table_list,
-                                                ref->m_column.str,
-                                                ref->m_column.length)))
+                                                m_column.str,
+                                                m_column.length)))
       {
         *def= Column_definition(thd, src, NULL/*No defaults,no constraints*/);
         def->flags&= (uint) ~NOT_NULL_FLAG;
@@ -206,7 +204,7 @@ bool sp_rcontext::resolve_type_ref(THD *thd, Column_definition *def,
       }
     }
     else
-      my_error(ER_BAD_FIELD_ERROR, MYF(0), ref->m_column.str, ref->table.str);
+      my_error(ER_BAD_FIELD_ERROR, MYF(0), m_column.str, table.str);
   }
 
   lex.unit.cleanup();
@@ -223,9 +221,8 @@ bool sp_rcontext::resolve_type_ref(THD *thd, Column_definition *def,
      rec t1%ROWTYPE;
   It opens the table "t1" and copies its structure to %ROWTYPE variable.
 */
-bool sp_rcontext::resolve_table_rowtype_ref(THD *thd,
-                                            Row_definition_list &defs,
-                                            Table_ident *ref)
+bool Table_ident::resolve_table_rowtype_ref(THD *thd,
+                                            Row_definition_list &defs)
 {
   Open_tables_backup open_tables_state_backup;
   thd->reset_n_backup_open_tables_state(&open_tables_state_backup);
@@ -246,7 +243,7 @@ bool sp_rcontext::resolve_table_rowtype_ref(THD *thd,
   // Make %ROWTYPE variables see temporary tables that shadow permanent tables
   thd->temporary_tables= open_tables_state_backup.temporary_tables;
 
-  if ((table_list= lex.select_lex.add_table_to_list(thd, ref, NULL, 0,
+  if ((table_list= lex.select_lex.add_table_to_list(thd, this, NULL, 0,
                                                     TL_READ_NO_INSERT,
                                                     MDL_SHARED_READ)) &&
       !check_table_access(thd, SELECT_ACL, table_list, TRUE, UINT_MAX, FALSE) &&
@@ -284,14 +281,14 @@ bool sp_rcontext::resolve_table_rowtype_ref(THD *thd,
 }
 
 
-bool sp_rcontext::resolve_type_refs(THD *thd, List<Spvar_definition> &defs)
+bool Row_definition_list::resolve_type_refs(THD *thd)
 {
-  List_iterator<Spvar_definition> it(defs);
+  List_iterator<Spvar_definition> it(*this);
   Spvar_definition *def;
   while ((def= it++))
   {
     if (def->is_column_type_ref() &&
-        resolve_type_ref(thd, def, def->column_type_ref()))
+        def->column_type_ref()->resolve_type_ref(thd, def))
       return true;
   }
   return false;
@@ -323,7 +320,7 @@ bool sp_rcontext::init_var_items(THD *thd,
       Row_definition_list defs;
       Item_field_row *item= new (thd->mem_root) Item_field_row(thd, field);
       if (!(m_var_items[idx]= item) ||
-          resolve_table_rowtype_ref(thd, defs, def->table_rowtype_ref()) ||
+          def->table_rowtype_ref()->resolve_table_rowtype_ref(thd, defs) ||
           item->row_create_items(thd, &defs))
         return true;
     }

sql/sp_rcontext.h

@@ -340,15 +340,6 @@ private:
   /// @retval true on error.
   bool init_var_table(THD *thd, List<Spvar_definition> &defs);
 
-  bool resolve_type_refs(THD *, List<Spvar_definition> &defs);
-  bool resolve_type_ref(THD *thd, Column_definition *def,
-                                  Qualified_column_ident *ref);
-  bool resolve_table_rowtype_ref(THD *thd, Row_definition_list &defs,
-                                           Table_ident *ref);
-  bool adjust_formal_params_to_actual_params(THD *thd,
-                                         List<Spvar_definition> &field_def_lst,
-                                         List<Item> *args);
-
   /// Create and initialize an Item-adapter (Item_field) for each SP-var field.
   ///
   /// param thd Thread handle.

sql/sql_class.h

@@ -5496,6 +5496,7 @@ public:
   {
     db= *db_name;
   }
+  bool resolve_table_rowtype_ref(THD *thd, Row_definition_list &defs);
 };
 
 
@@ -5519,6 +5520,7 @@ public:
    :Table_ident(thd, db, table, false),
     m_column(*column)
   { }
+  bool resolve_type_ref(THD *thd, Column_definition *def);
 };