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MySQL 5.1: Item_func_numhybrid Class Reference

Item_func_numhybrid Class Reference

#include <item_func.h>

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List of all members.

Public Member Functions

 Item_func_numhybrid (Item *a)
 Item_func_numhybrid (Item *a, Item *b)
 Item_func_numhybrid (List< Item > &list)
enum Item_result result_type () const
void fix_length_and_dec ()
void fix_num_length_and_dec ()
virtual void find_num_type ()=0
double val_real ()
longlong val_int ()
my_decimal * val_decimal (my_decimal *)
String * val_str (String *str)
virtual longlong int_op ()=0
virtual double real_op ()=0
virtual my_decimal * decimal_op (my_decimal *)=0
virtual String * str_op (String *)=0
bool is_null ()

Protected Attributes

Item_result hybrid_type

Detailed Description

Definition at line 214 of file item_func.h.

Constructor & Destructor Documentation

Item_func_numhybrid::Item_func_numhybrid ( Item *  a  )  [inline]

Definition at line 219 of file item_func.h.

00219                                :Item_func(a), hybrid_type(REAL_RESULT)
00220   {}

Item_func_numhybrid::Item_func_numhybrid ( Item *  a,
Item *  b 
) [inline]

Definition at line 221 of file item_func.h.

00222     :Item_func(a,b), hybrid_type(REAL_RESULT)
00223   {}

Item_func_numhybrid::Item_func_numhybrid ( List< Item > &  list  )  [inline]

Definition at line 224 of file item_func.h.

00225     :Item_func(list), hybrid_type(REAL_RESULT)
00226   {}

Member Function Documentation

virtual my_decimal* Item_func_numhybrid::decimal_op ( my_decimal *   )  [pure virtual]

Implemented in Item_func_coalesce, Item_func_ifnull, Item_func_plus, Item_func_minus, Item_func_mul, Item_func_div, Item_func_mod, Item_func_neg, Item_func_abs, Item_func_ceiling, Item_func_floor, and Item_func_round.

Referenced by val_decimal(), val_int(), val_real(), and val_str().

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virtual void Item_func_numhybrid::find_num_type (  )  [pure virtual]

Implemented in Item_func_coalesce, Item_func_num1, Item_num_op, and Item_func_int_val.

Referenced by fix_length_and_dec().

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void Item_func_numhybrid::fix_length_and_dec (  )  [virtual]

Implements Item_result_field.

Reimplemented in Item_func_coalesce, Item_func_ifnull, Item_func_minus, Item_func_div, Item_func_neg, Item_func_abs, and Item_func_round.

Definition at line 682 of file item_func.cc.

References find_num_type(), and fix_num_length_and_dec().

Referenced by Item_func_abs::fix_length_and_dec(), Item_func_neg::fix_length_and_dec(), Item_func_div::fix_length_and_dec(), and Item_func_minus::fix_length_and_dec().

00683 {
00684   fix_num_length_and_dec();
00685   find_num_type();
00686 }

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void Item_func_numhybrid::fix_num_length_and_dec (  )  [virtual]

Reimplemented from Item_func.

Reimplemented in Item_func_num1, Item_func_neg, and Item_func_int_val.

Definition at line 459 of file item_func.cc.

Referenced by fix_length_and_dec().

00460 {}

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virtual longlong Item_func_numhybrid::int_op (  )  [pure virtual]

Implemented in Item_func_coalesce, Item_func_ifnull, Item_func_plus, Item_func_minus, Item_func_mul, Item_func_div, Item_func_mod, Item_func_neg, Item_func_abs, Item_func_ceiling, Item_func_floor, and Item_func_round.

Referenced by val_decimal(), val_int(), val_real(), and val_str().

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bool Item_func_numhybrid::is_null (  )  [inline, virtual]

Reimplemented from Item_func.

Definition at line 242 of file item_func.h.

References Item::null_value, and val_real().

00242 { (void) val_real(); return null_value; }

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virtual double Item_func_numhybrid::real_op (  )  [pure virtual]

Implemented in Item_func_coalesce, Item_func_ifnull, Item_func_plus, Item_func_minus, Item_func_mul, Item_func_div, Item_func_mod, Item_func_neg, Item_func_abs, Item_func_ceiling, Item_func_floor, and Item_func_round.

Referenced by val_decimal(), val_int(), val_real(), and val_str().

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enum Item_result Item_func_numhybrid::result_type (  )  const [inline, virtual]

Reimplemented from Item.

Reimplemented in Item_func_coalesce.

Definition at line 228 of file item_func.h.

References hybrid_type.

Referenced by Item_func_int_val::find_num_type(), Item_func_num1::find_num_type(), Item_func_round::fix_length_and_dec(), Item_func_floor::int_op(), Item_func_ceiling::int_op(), Item_func_div::result_precision(), Item_func_mul::result_precision(), and Item_func_additive_op::result_precision().

00228 { return hybrid_type; }

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virtual String* Item_func_numhybrid::str_op ( String *   )  [pure virtual]

Implemented in Item_func_coalesce, Item_func_ifnull, Item_func_num1, and Item_num_op.

Referenced by val_decimal(), val_int(), val_real(), and val_str().

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my_decimal * Item_func_numhybrid::val_decimal ( my_decimal *   )  [virtual]

Reimplemented from Item_func.

Definition at line 794 of file item_func.cc.

References String::charset(), DBUG_ASSERT, decimal_op(), DECIMAL_RESULT, double2my_decimal(), E_DEC_FATAL_ERROR, Item::fixed, hybrid_type, int2my_decimal(), int_op(), INT_RESULT, String::length(), NULL, String::ptr(), real_op(), REAL_RESULT, ROW_RESULT, str2my_decimal(), str_op(), Item::str_value, STRING_RESULT, and Item::unsigned_flag.

Referenced by Item_func_coalesce::decimal_op().

00795 {
00796   my_decimal *val= decimal_value;
00797   DBUG_ASSERT(fixed == 1);
00798   switch (hybrid_type) {
00799   case DECIMAL_RESULT:
00800     val= decimal_op(decimal_value);
00801     break;
00802   case INT_RESULT:
00803   {
00804     longlong result= int_op();
00805     int2my_decimal(E_DEC_FATAL_ERROR, result, unsigned_flag, decimal_value);
00806     break;
00807   }
00808   case REAL_RESULT:
00809   {
00810     double result= (double)real_op();
00811     double2my_decimal(E_DEC_FATAL_ERROR, result, decimal_value);
00812     break;
00813   }
00814   case STRING_RESULT:
00815   {
00816     String *res;
00817     if (!(res= str_op(&str_value)))
00818       return NULL;
00819 
00820     str2my_decimal(E_DEC_FATAL_ERROR, (char*) res->ptr(),
00821                    res->length(), res->charset(), decimal_value);
00822     break;
00823   }  
00824   case ROW_RESULT:
00825   default:
00826     DBUG_ASSERT(0);
00827   }
00828   return val;
00829 }

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longlong Item_func_numhybrid::val_int (  )  [virtual]

Implements Item.

Definition at line 759 of file item_func.cc.

References String::charset(), charset_info_st::cset, DBUG_ASSERT, decimal_op(), DECIMAL_RESULT, E_DEC_FATAL_ERROR, Item::fixed, hybrid_type, int_op(), INT_RESULT, String::length(), my_decimal2int(), String::ptr(), real_op(), REAL_RESULT, rint, str_op(), Item::str_value, STRING_RESULT, my_charset_handler_st::strtoll10, and Item::unsigned_flag.

Referenced by Item_func_round::decimal_op(), Item_func_round::fix_length_and_dec(), Item_func_neg::fix_length_and_dec(), Item_func_round::int_op(), Item_func_coalesce::int_op(), and Item_func_round::real_op().

00760 {
00761   DBUG_ASSERT(fixed == 1);
00762   switch (hybrid_type) {
00763   case DECIMAL_RESULT:
00764   {
00765     my_decimal decimal_value, *val;
00766     if (!(val= decimal_op(&decimal_value)))
00767       return 0;                                 // null is set
00768     longlong result;
00769     my_decimal2int(E_DEC_FATAL_ERROR, val, unsigned_flag, &result);
00770     return result;
00771   }
00772   case INT_RESULT:
00773     return int_op();
00774   case REAL_RESULT:
00775     return (longlong) rint(real_op());
00776   case STRING_RESULT:
00777   {
00778     int err_not_used;
00779     String *res;
00780     if (!(res= str_op(&str_value)))
00781       return 0;
00782 
00783     char *end= (char*) res->ptr() + res->length();
00784     CHARSET_INFO *cs= str_value.charset();
00785     return (*(cs->cset->strtoll10))(cs, res->ptr(), &end, &err_not_used);
00786   }
00787   default:
00788     DBUG_ASSERT(0);
00789   }
00790   return 0;
00791 }

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double Item_func_numhybrid::val_real (  )  [virtual]

Implements Item.

Definition at line 727 of file item_func.cc.

References String::charset(), DBUG_ASSERT, decimal_op(), DECIMAL_RESULT, E_DEC_FATAL_ERROR, Item::fixed, hybrid_type, int_op(), INT_RESULT, String::length(), my_decimal2double(), my_strntod, String::ptr(), real_op(), REAL_RESULT, str_op(), Item::str_value, and STRING_RESULT.

Referenced by is_null(), and Item_func_coalesce::real_op().

00728 {
00729   DBUG_ASSERT(fixed == 1);
00730   switch (hybrid_type) {
00731   case DECIMAL_RESULT:
00732   {
00733     my_decimal decimal_value, *val;
00734     double result;
00735     if (!(val= decimal_op(&decimal_value)))
00736       return 0.0;                               // null is set
00737     my_decimal2double(E_DEC_FATAL_ERROR, val, &result);
00738     return result;
00739   }
00740   case INT_RESULT:
00741     return (double)int_op();
00742   case REAL_RESULT:
00743     return real_op();
00744   case STRING_RESULT:
00745   {
00746     char *end_not_used;
00747     int err_not_used;
00748     String *res= str_op(&str_value);
00749     return (res ? my_strntod(res->charset(), (char*) res->ptr(), res->length(),
00750                              &end_not_used, &err_not_used) : 0.0);
00751   }
00752   default:
00753     DBUG_ASSERT(0);
00754   }
00755   return 0.0;
00756 }

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String * Item_func_numhybrid::val_str ( String *  str  )  [virtual]

Implements Item.

Definition at line 689 of file item_func.cc.

References DBUG_ASSERT, decimal_op(), DECIMAL_RESULT, Item::decimals, E_DEC_FATAL_ERROR, FALSE, Item::fixed, hybrid_type, int_op(), INT_RESULT, my_charset_bin, my_decimal2string(), my_decimal_round(), Item::null_value, real_op(), REAL_RESULT, String::set_int(), String::set_real(), str_op(), Item::str_value, STRING_RESULT, and Item::unsigned_flag.

Referenced by Item_func_coalesce::str_op().

00690 {
00691   DBUG_ASSERT(fixed == 1);
00692   switch (hybrid_type) {
00693   case DECIMAL_RESULT:
00694   {
00695     my_decimal decimal_value, *val;
00696     if (!(val= decimal_op(&decimal_value)))
00697       return 0;                                 // null is set
00698     my_decimal_round(E_DEC_FATAL_ERROR, val, decimals, FALSE, val);
00699     my_decimal2string(E_DEC_FATAL_ERROR, val, 0, 0, 0, str);
00700     break;
00701   }
00702   case INT_RESULT:
00703   {
00704     longlong nr= int_op();
00705     if (null_value)
00706       return 0; /* purecov: inspected */
00707     str->set_int(nr, unsigned_flag, &my_charset_bin);
00708     break;
00709   }
00710   case REAL_RESULT:
00711   {
00712     double nr= real_op();
00713     if (null_value)
00714       return 0; /* purecov: inspected */
00715     str->set_real(nr,decimals,&my_charset_bin);
00716     break;
00717   }
00718   case STRING_RESULT:
00719     return str_op(&str_value);
00720   default:
00721     DBUG_ASSERT(0);
00722   }
00723   return str;
00724 }

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Member Data Documentation

Item_result Item_func_numhybrid::hybrid_type [protected]

Definition at line 217 of file item_func.h.

Referenced by Item_func_int_val::find_num_type(), Item_func_num1::find_num_type(), Item_num_op::find_num_type(), Item_func_round::fix_length_and_dec(), Item_func_neg::fix_length_and_dec(), Item_func_div::fix_length_and_dec(), Item_func_coalesce::fix_length_and_dec(), Item_func_ifnull::fix_length_and_dec(), result_type(), Item_func_coalesce::result_type(), val_decimal(), val_int(), val_real(), and val_str().

The documentation for this class was generated from the following files:
Generated on Sat Sep 9 21:39:44 2006 for MySQL 5.1 by  doxygen 1.4.7