MDEV-11330 Split Item_func_hybrid_field_type::val_xxx() into methods in Type_handler

sql/item_func.h

@@ -451,6 +451,62 @@ class Item_func_hybrid_field_type: public Item_hybrid_func
     DBUG_ASSERT((res != NULL) ^ null_value);
     return res;
   }
+  bool make_zero_mysql_time(MYSQL_TIME *ltime, ulonglong fuzzydate)
+  {
+    bzero(ltime, sizeof(*ltime));
+    return null_value|= !(fuzzydate & TIME_FUZZY_DATES);
+  }
+
+public:
+  // Value methods that involve no conversion
+  String *val_str_from_str_op(String *str)
+  {
+    return str_op_with_null_check(&str_value);
+  }
+  my_decimal *val_decimal_from_decimal_op(my_decimal *dec)
+  {
+    return decimal_op_with_null_check(dec);
+  }
+  longlong val_int_from_int_op()
+  {
+    return int_op();
+  }
+  double val_real_from_real_op()
+  {
+    return real_op();
+  }
+  bool get_date_from_date_op(MYSQL_TIME *ltime, ulonglong fuzzydate)
+  {
+    return date_op(ltime,
+                   fuzzydate |
+                   (field_type() == MYSQL_TYPE_TIME ? TIME_TIME_ONLY : 0));
+  }
+
+  // Value methods that involve conversion
+  String *val_str_from_decimal_op(String *str);
+  String *val_str_from_real_op(String *str);
+  String *val_str_from_int_op(String *str);
+  String *val_str_from_date_op(String *str);
+
+  my_decimal *val_decimal_from_str_op(my_decimal *dec);
+  my_decimal *val_decimal_from_real_op(my_decimal *dec);
+  my_decimal *val_decimal_from_int_op(my_decimal *dec);
+  my_decimal *val_decimal_from_date_op(my_decimal *dec);
+
+  longlong val_int_from_str_op();
+  longlong val_int_from_real_op();
+  longlong val_int_from_decimal_op();
+  longlong val_int_from_date_op();
+
+  double val_real_from_str_op();
+  double val_real_from_decimal_op();
+  double val_real_from_date_op();
+  double val_real_from_int_op();
+
+  bool get_date_from_str_op(MYSQL_TIME *ltime, ulonglong fuzzydate);
+  bool get_date_from_real_op(MYSQL_TIME *ltime, ulonglong fuzzydate);
+  bool get_date_from_decimal_op(MYSQL_TIME *ltime, ulonglong fuzzydate);
+  bool get_date_from_int_op(MYSQL_TIME *ltime, ulonglong fuzzydate);
 
 public:
   Item_func_hybrid_field_type(THD *thd):
@@ -469,11 +525,38 @@ class Item_func_hybrid_field_type: public Item_hybrid_func
     Item_hybrid_func(thd, list)
   { collation.set_numeric(); }
 
-  double val_real();
-  longlong val_int();
-  my_decimal *val_decimal(my_decimal *);
-  String *val_str(String*str);
-  bool get_date(MYSQL_TIME *res, ulonglong fuzzy_date);
+  double val_real()
+  {
+    DBUG_ASSERT(fixed);
+    return Item_func_hybrid_field_type::type_handler()->
+           Item_func_hybrid_field_type_val_real(this);
+  }
+  longlong val_int()
+  {
+    DBUG_ASSERT(fixed);
+    return Item_func_hybrid_field_type::type_handler()->
+           Item_func_hybrid_field_type_val_int(this);
+  }
+  my_decimal *val_decimal(my_decimal *dec)
+  {
+    DBUG_ASSERT(fixed);
+    return Item_func_hybrid_field_type::type_handler()->
+           Item_func_hybrid_field_type_val_decimal(this, dec);
+  }
+  String *val_str(String*str)
+  {
+    DBUG_ASSERT(fixed);
+    String *res= Item_func_hybrid_field_type::type_handler()->
+                 Item_func_hybrid_field_type_val_str(this, str);
+    DBUG_ASSERT(null_value == (res == NULL));
+    return res;
+  }
+  bool get_date(MYSQL_TIME *res, ulonglong fuzzy_date)
+  {
+    DBUG_ASSERT(fixed);
+    return Item_func_hybrid_field_type::type_handler()->
+           Item_func_hybrid_field_type_get_date(this, res, fuzzy_date);
+  }
 
   /**
      @brief Performs the operation that this functions implements when the

sql/sql_type.cc

@@ -899,4 +899,245 @@ Type_handler_string_result::Item_func_hex_val_str_ascii(Item_func_hex *item,
   return item->val_str_ascii_from_val_str(str);
 }
 
-/*************************************************************************/
+/***************************************************************************/
+
+String *
+Type_handler_decimal_result::Item_func_hybrid_field_type_val_str(
+                                              Item_func_hybrid_field_type *item,
+                                              String *str) const
+{
+  return item->val_str_from_decimal_op(str);
+}
+
+
+double
+Type_handler_decimal_result::Item_func_hybrid_field_type_val_real(
+                                              Item_func_hybrid_field_type *item)
+                                              const
+{
+  return item->val_real_from_decimal_op();
+}
+
+
+longlong
+Type_handler_decimal_result::Item_func_hybrid_field_type_val_int(
+                                              Item_func_hybrid_field_type *item)
+                                              const
+{
+  return item->val_int_from_decimal_op();
+}
+
+
+my_decimal *
+Type_handler_decimal_result::Item_func_hybrid_field_type_val_decimal(
+                                              Item_func_hybrid_field_type *item,
+                                              my_decimal *dec) const
+{
+  return item->val_decimal_from_decimal_op(dec);
+}
+
+
+bool
+Type_handler_decimal_result::Item_func_hybrid_field_type_get_date(
+                                             Item_func_hybrid_field_type *item,
+                                             MYSQL_TIME *ltime,
+                                             ulonglong fuzzydate) const
+{
+  return item->get_date_from_decimal_op(ltime, fuzzydate);
+}
+
+
+/***************************************************************************/
+
+
+String *
+Type_handler_int_result::Item_func_hybrid_field_type_val_str(
+                                          Item_func_hybrid_field_type *item,
+                                          String *str) const
+{
+  return item->val_str_from_int_op(str);
+}
+
+
+double
+Type_handler_int_result::Item_func_hybrid_field_type_val_real(
+                                          Item_func_hybrid_field_type *item)
+                                          const
+{
+  return item->val_real_from_int_op();
+}
+
+
+longlong
+Type_handler_int_result::Item_func_hybrid_field_type_val_int(
+                                          Item_func_hybrid_field_type *item)
+                                          const
+{
+  return item->val_int_from_int_op();
+}
+
+
+my_decimal *
+Type_handler_int_result::Item_func_hybrid_field_type_val_decimal(
+                                          Item_func_hybrid_field_type *item,
+                                          my_decimal *dec) const
+{
+  return item->val_decimal_from_int_op(dec);
+}
+
+
+bool
+Type_handler_int_result::Item_func_hybrid_field_type_get_date(
+                                          Item_func_hybrid_field_type *item,
+                                          MYSQL_TIME *ltime,
+                                          ulonglong fuzzydate) const
+{
+  return item->get_date_from_int_op(ltime, fuzzydate);
+}
+
+
+
+/***************************************************************************/
+
+String *
+Type_handler_real_result::Item_func_hybrid_field_type_val_str(
+                                           Item_func_hybrid_field_type *item,
+                                           String *str) const
+{
+  return item->val_str_from_real_op(str);
+}
+
+
+double
+Type_handler_real_result::Item_func_hybrid_field_type_val_real(
+                                           Item_func_hybrid_field_type *item)
+                                           const
+{
+  return item->val_real_from_real_op();
+}
+
+
+longlong
+Type_handler_real_result::Item_func_hybrid_field_type_val_int(
+                                           Item_func_hybrid_field_type *item)
+                                           const
+{
+  return item->val_int_from_real_op();
+}
+
+
+my_decimal *
+Type_handler_real_result::Item_func_hybrid_field_type_val_decimal(
+                                           Item_func_hybrid_field_type *item,
+                                           my_decimal *dec) const
+{
+  return item->val_decimal_from_real_op(dec);
+}
+
+
+bool
+Type_handler_real_result::Item_func_hybrid_field_type_get_date(
+                                             Item_func_hybrid_field_type *item,
+                                             MYSQL_TIME *ltime,
+                                             ulonglong fuzzydate) const
+{
+  return item->get_date_from_real_op(ltime, fuzzydate);
+}
+
+
+/***************************************************************************/
+
+String *
+Type_handler_temporal_result::Item_func_hybrid_field_type_val_str(
+                                        Item_func_hybrid_field_type *item,
+                                        String *str) const
+{
+  return item->val_str_from_date_op(str);
+}
+
+
+double
+Type_handler_temporal_result::Item_func_hybrid_field_type_val_real(
+                                        Item_func_hybrid_field_type *item)
+                                        const
+{
+  return item->val_real_from_date_op();
+}
+
+
+longlong
+Type_handler_temporal_result::Item_func_hybrid_field_type_val_int(
+                                        Item_func_hybrid_field_type *item)
+                                        const
+{
+  return item->val_int_from_date_op();
+}
+
+
+my_decimal *
+Type_handler_temporal_result::Item_func_hybrid_field_type_val_decimal(
+                                        Item_func_hybrid_field_type *item,
+                                        my_decimal *dec) const
+{
+  return item->val_decimal_from_date_op(dec);
+}
+
+
+bool
+Type_handler_temporal_result::Item_func_hybrid_field_type_get_date(
+                                        Item_func_hybrid_field_type *item,
+                                        MYSQL_TIME *ltime,
+                                        ulonglong fuzzydate) const
+{
+  return item->get_date_from_date_op(ltime, fuzzydate);
+}
+
+
+/***************************************************************************/
+
+String *
+Type_handler_string_result::Item_func_hybrid_field_type_val_str(
+                                             Item_func_hybrid_field_type *item,
+                                             String *str) const
+{
+  return item->val_str_from_str_op(str);
+}
+
+
+double
+Type_handler_string_result::Item_func_hybrid_field_type_val_real(
+                                             Item_func_hybrid_field_type *item)
+                                             const
+{
+  return item->val_real_from_str_op();
+}
+
+
+longlong
+Type_handler_string_result::Item_func_hybrid_field_type_val_int(
+                                             Item_func_hybrid_field_type *item)
+                                             const
+{
+  return item->val_int_from_str_op();
+}
+
+
+my_decimal *
+Type_handler_string_result::Item_func_hybrid_field_type_val_decimal(
+                                              Item_func_hybrid_field_type *item,
+                                              my_decimal *dec) const
+{
+  return item->val_decimal_from_str_op(dec);
+}
+
+
+bool
+Type_handler_string_result::Item_func_hybrid_field_type_get_date(
+                                             Item_func_hybrid_field_type *item,
+                                             MYSQL_TIME *ltime,
+                                             ulonglong fuzzydate) const
+{
+  return item->get_date_from_str_op(ltime, fuzzydate);
+}
+
+/***************************************************************************/

sql/sql_type.h

@@ -28,6 +28,7 @@ class Item;
 class Item_cache;
 class Item_sum_hybrid;
 class Item_func_hex;
+class Item_func_hybrid_field_type;
 class Type_std_attributes;
 class Sort_param;
 class Arg_comparator;
@@ -294,6 +295,25 @@ class Type_handler
   virtual bool Item_sum_hybrid_fix_length_and_dec(Item_sum_hybrid *) const= 0;
   virtual String *Item_func_hex_val_str_ascii(Item_func_hex *item,
                                               String *str) const= 0;
+
+  virtual
+  String *Item_func_hybrid_field_type_val_str(Item_func_hybrid_field_type *,
+                                              String *) const= 0;
+  virtual
+  double Item_func_hybrid_field_type_val_real(Item_func_hybrid_field_type *)
+                                              const= 0;
+  virtual
+  longlong Item_func_hybrid_field_type_val_int(Item_func_hybrid_field_type *)
+                                               const= 0;
+  virtual
+  my_decimal *Item_func_hybrid_field_type_val_decimal(
+                                              Item_func_hybrid_field_type *,
+                                              my_decimal *) const= 0;
+  virtual
+  bool Item_func_hybrid_field_type_get_date(Item_func_hybrid_field_type *,
+                                            MYSQL_TIME *,
+                                            ulonglong fuzzydate) const= 0;
+
 };
 
 
@@ -357,6 +377,39 @@ class Type_handler_row: public Type_handler
     DBUG_ASSERT(0);
     return NULL;
   }
+  String *Item_func_hybrid_field_type_val_str(Item_func_hybrid_field_type *,
+                                              String *) const
+  {
+    DBUG_ASSERT(0);
+    return NULL;
+  }
+  double Item_func_hybrid_field_type_val_real(Item_func_hybrid_field_type *)
+                                              const
+  {
+    DBUG_ASSERT(0);
+    return 0.0;
+  }
+  longlong Item_func_hybrid_field_type_val_int(Item_func_hybrid_field_type *)
+                                               const
+  {
+    DBUG_ASSERT(0);
+    return 0;
+  }
+  my_decimal *Item_func_hybrid_field_type_val_decimal(
+                                              Item_func_hybrid_field_type *,
+                                              my_decimal *) const
+  {
+    DBUG_ASSERT(0);
+    return NULL;
+  }
+  bool Item_func_hybrid_field_type_get_date(Item_func_hybrid_field_type *,
+                                            MYSQL_TIME *,
+                                            ulonglong fuzzydate) const
+  {
+    DBUG_ASSERT(0);
+    return true;
+  }
+
 };
 
 
@@ -392,6 +445,18 @@ class Type_handler_real_result: public Type_handler_numeric
   bool set_comparator_func(Arg_comparator *cmp) const;
   bool Item_sum_hybrid_fix_length_and_dec(Item_sum_hybrid *func) const;
   String *Item_func_hex_val_str_ascii(Item_func_hex *item, String *str) const;
+  String *Item_func_hybrid_field_type_val_str(Item_func_hybrid_field_type *,
+                                              String *) const;
+  double Item_func_hybrid_field_type_val_real(Item_func_hybrid_field_type *)
+                                              const;
+  longlong Item_func_hybrid_field_type_val_int(Item_func_hybrid_field_type *)
+                                               const;
+  my_decimal *Item_func_hybrid_field_type_val_decimal(
+                                              Item_func_hybrid_field_type *,
+                                              my_decimal *) const;
+  bool Item_func_hybrid_field_type_get_date(Item_func_hybrid_field_type *,
+                                            MYSQL_TIME *,
+                                            ulonglong fuzzydate) const;
 };
 
 
@@ -412,6 +477,18 @@ class Type_handler_decimal_result: public Type_handler_numeric
   bool set_comparator_func(Arg_comparator *cmp) const;
   bool Item_sum_hybrid_fix_length_and_dec(Item_sum_hybrid *func) const;
   String *Item_func_hex_val_str_ascii(Item_func_hex *item, String *str) const;
+  String *Item_func_hybrid_field_type_val_str(Item_func_hybrid_field_type *,
+                                              String *) const;
+  double Item_func_hybrid_field_type_val_real(Item_func_hybrid_field_type *)
+                                              const;
+  longlong Item_func_hybrid_field_type_val_int(Item_func_hybrid_field_type *)
+                                               const;
+  my_decimal *Item_func_hybrid_field_type_val_decimal(
+                                              Item_func_hybrid_field_type *,
+                                              my_decimal *) const;
+  bool Item_func_hybrid_field_type_get_date(Item_func_hybrid_field_type *,
+                                            MYSQL_TIME *,
+                                            ulonglong fuzzydate) const;
 };
 
 
@@ -432,6 +509,18 @@ class Type_handler_int_result: public Type_handler_numeric
   bool set_comparator_func(Arg_comparator *cmp) const;
   bool Item_sum_hybrid_fix_length_and_dec(Item_sum_hybrid *func) const;
   String *Item_func_hex_val_str_ascii(Item_func_hex *item, String *str) const;
+  String *Item_func_hybrid_field_type_val_str(Item_func_hybrid_field_type *,
+                                              String *) const;
+  double Item_func_hybrid_field_type_val_real(Item_func_hybrid_field_type *)
+                                              const;
+  longlong Item_func_hybrid_field_type_val_int(Item_func_hybrid_field_type *)
+                                               const;
+  my_decimal *Item_func_hybrid_field_type_val_decimal(
+                                              Item_func_hybrid_field_type *,
+                                              my_decimal *) const;
+  bool Item_func_hybrid_field_type_get_date(Item_func_hybrid_field_type *,
+                                            MYSQL_TIME *,
+                                            ulonglong fuzzydate) const;
 };
 
 
@@ -450,6 +539,18 @@ class Type_handler_temporal_result: public Type_handler
   bool set_comparator_func(Arg_comparator *cmp) const;
   bool Item_sum_hybrid_fix_length_and_dec(Item_sum_hybrid *func) const;
   String *Item_func_hex_val_str_ascii(Item_func_hex *item, String *str) const;
+  String *Item_func_hybrid_field_type_val_str(Item_func_hybrid_field_type *,
+                                              String *) const;
+  double Item_func_hybrid_field_type_val_real(Item_func_hybrid_field_type *)
+                                              const;
+  longlong Item_func_hybrid_field_type_val_int(Item_func_hybrid_field_type *)
+                                               const;
+  my_decimal *Item_func_hybrid_field_type_val_decimal(
+                                              Item_func_hybrid_field_type *,
+                                              my_decimal *) const;
+  bool Item_func_hybrid_field_type_get_date(Item_func_hybrid_field_type *,
+                                            MYSQL_TIME *,
+                                            ulonglong fuzzydate) const;
 };
 
 
@@ -472,6 +573,18 @@ class Type_handler_string_result: public Type_handler
   bool set_comparator_func(Arg_comparator *cmp) const;
   bool Item_sum_hybrid_fix_length_and_dec(Item_sum_hybrid *func) const;
   String *Item_func_hex_val_str_ascii(Item_func_hex *item, String *str) const;
+  String *Item_func_hybrid_field_type_val_str(Item_func_hybrid_field_type *,
+                                              String *) const;
+  double Item_func_hybrid_field_type_val_real(Item_func_hybrid_field_type *)
+                                              const;
+  longlong Item_func_hybrid_field_type_val_int(Item_func_hybrid_field_type *)
+                                               const;
+  my_decimal *Item_func_hybrid_field_type_val_decimal(
+                                              Item_func_hybrid_field_type *,
+                                              my_decimal *) const;
+  bool Item_func_hybrid_field_type_get_date(Item_func_hybrid_field_type *,
+                                            MYSQL_TIME *,
+                                            ulonglong fuzzydate) const;
 };