Adding upstream version 1:10.5.12.upstream/1%10.5.12upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 184 insertions, 0 deletions

diff --git a/sql/procedure.h b/sql/procedure.h
new file mode 100644
index 00000000..769eac5f
--- /dev/null
+++ b/sql/procedure.h
@@ -0,0 +1,184 @@
+#ifndef PROCEDURE_INCLUDED
+#define PROCEDURE_INCLUDED
+
+/* Copyright (c) 2000, 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 */
+
+/* When using sql procedures */
+
+#ifdef USE_PRAGMA_INTERFACE
+#pragma interface				/* gcc class implementation */
+#endif
+
+/*
+  It is necessary to include set_var.h instead of item.h because there
+  are dependencies on include order for set_var.h and item.h. This
+  will be resolved later.
+*/
+#include "sql_class.h"                          /* select_result, set_var.h: THD */
+#include "set_var.h"                            /* Item */
+
+#define PROC_NO_SORT 1				/**< Bits in flags */
+#define PROC_GROUP   2				/**< proc must have group */
+
+/* Procedure items used by procedures to store values for send_result_set_metadata */
+
+class Item_proc :public Item
+{
+public:
+  Item_proc(THD *thd, const char *name_par): Item(thd)
+  {
+     this->name.str=    name_par;
+     this->name.length= strlen(name_par);
+  }
+  enum Type type() const { return Item::PROC_ITEM; }
+  Field *create_tmp_field_ex(MEM_ROOT *root, TABLE *table, Tmp_field_src *src,
+                             const Tmp_field_param *param)
+  {
+    /*
+      We can get to here when using a CURSOR for a query with PROCEDURE:
+        DECLARE c CURSOR FOR SELECT * FROM t1 PROCEDURE analyse();
+        OPEN c;
+    */
+    return create_tmp_field_ex_simple(root, table, src, param);
+  }
+  virtual void set(double nr)=0;
+  virtual void set(const char *str,uint length,CHARSET_INFO *cs)=0;
+  virtual void set(longlong nr)=0;
+  const Type_handler *type_handler() const=0;
+  void set(const char *str) { set(str,(uint) strlen(str), default_charset()); }
+  unsigned int size_of() { return sizeof(*this);}
+  bool check_vcol_func_processor(void *arg)
+  {
+    DBUG_ASSERT(0); // impossible
+    return mark_unsupported_function("proc", arg, VCOL_IMPOSSIBLE);
+  }
+  bool get_date(THD *thd, MYSQL_TIME *ltime, date_mode_t fuzzydate)
+  {
+    return type_handler()->Item_get_date_with_warn(thd, this, ltime, fuzzydate);
+  }
+  Item* get_copy(THD *thd) { return 0; }
+};
+
+class Item_proc_real :public Item_proc
+{
+  double value;
+public:
+  Item_proc_real(THD *thd, const char *name_par, uint dec):
+    Item_proc(thd, name_par)
+  {
+     decimals=dec; max_length=float_length(dec);
+  }
+  const Type_handler *type_handler() const { return &type_handler_double; }
+  void set(double nr) { value=nr; }
+  void set(longlong nr) { value=(double) nr; }
+  void set(const char *str,uint length,CHARSET_INFO *cs)
+  {
+    int err_not_used;
+    char *end_not_used;
+    value= cs->strntod((char*) str,length, &end_not_used, &err_not_used);
+  }
+  double val_real() { return value; }
+  longlong val_int() { return (longlong) value; }
+  String *val_str(String *s)
+  {
+    s->set_real(value,decimals,default_charset());
+    return s;
+  }
+  my_decimal *val_decimal(my_decimal *);
+  unsigned int size_of() { return sizeof(*this);}
+};
+
+class Item_proc_int :public Item_proc
+{
+  longlong value;
+public:
+  Item_proc_int(THD *thd, const char *name_par): Item_proc(thd, name_par)
+  { max_length=11; }
+  const Type_handler *type_handler() const
+  {
+    if (unsigned_flag)
+      return &type_handler_ulonglong;
+    return &type_handler_slonglong;
+  }
+  void set(double nr) { value=(longlong) nr; }
+  void set(longlong nr) { value=nr; }
+  void set(const char *str,uint length, CHARSET_INFO *cs)
+  { int err; value= cs->strntoll(str,length,10,NULL,&err); }
+  double val_real() { return (double) value; }
+  longlong val_int() { return value; }
+  String *val_str(String *s) { s->set(value, default_charset()); return s; }
+  my_decimal *val_decimal(my_decimal *);
+  unsigned int size_of() { return sizeof(*this);}
+};
+
+
+class Item_proc_string :public Item_proc
+{
+public:
+  Item_proc_string(THD *thd, const char *name_par, uint length):
+    Item_proc(thd, name_par) { this->max_length=length; }
+  const Type_handler *type_handler() const { return &type_handler_varchar; }
+  void set(double nr) { str_value.set_real(nr, 2, default_charset()); }
+  void set(longlong nr) { str_value.set(nr, default_charset()); }
+  void set(const char *str, uint length, CHARSET_INFO *cs)
+  { str_value.copy(str,length,cs); }
+  double val_real()
+  {
+    int err_not_used;
+    char *end_not_used;
+    CHARSET_INFO *cs= str_value.charset();
+    return cs->strntod((char*) str_value.ptr(), str_value.length(),
+		       &end_not_used, &err_not_used);
+  }
+  longlong val_int()
+  { 
+    int err;
+    CHARSET_INFO *cs=str_value.charset();
+    return cs->strntoll(str_value.ptr(),str_value.length(),10,NULL,&err);
+  }
+  String *val_str(String*)
+  {
+    return null_value ? (String*) 0 : (String*) &str_value;
+  }
+  my_decimal *val_decimal(my_decimal *);
+  unsigned int size_of() { return sizeof(*this);}  
+};
+
+/* The procedure class definitions */
+
+class Procedure {
+protected:
+  List<Item> *fields;
+  select_result *result;
+public:
+  const uint flags;
+  ORDER *group,*param_fields;
+  Procedure(select_result *res,uint flags_par) :result(res),flags(flags_par),
+    group(0),param_fields(0) {}
+  virtual ~Procedure() {group=param_fields=0; fields=0; }
+  virtual void add(void)=0;
+  virtual void end_group(void)=0;
+  virtual int send_row(List<Item> &fields)=0;
+  virtual bool change_columns(THD *thd, List<Item> &fields)= 0;
+  virtual void update_refs(void) {}
+  virtual int end_of_records() { return 0; }
+};
+
+Procedure *setup_procedure(THD *thd,ORDER *proc_param,select_result *result,
+			   List<Item> &field_list,int *error);
+
+#endif /* PROCEDURE_INCLUDED */