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MDEV-12649 Add Type_handler::Item_save_in_value

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This commit is contained in:
Alexander Barkov
2017-04-30 22:50:37 +04:00
parent 7a19c59c00
commit c67971a8a3
4 changed files with 101 additions and 48 deletions
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11
sql/sql_type.h
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@ -63,6 +63,7 @@ class in_vector;
class Type_std_attributes;
class Sort_param;
class Arg_comparator;
struct st_value;
struct TABLE;
struct SORT_FIELD_ATTR;
@ -403,6 +404,7 @@ protected:
Item_func_or_sum_illegal_param(const char *name) const;
bool
Item_func_or_sum_illegal_param(const Item_func_or_sum *) const;
bool check_null(const Item *item, st_value *value) const;
public:
static const Type_handler *blob_type_handler(uint max_octet_length);
static const Type_handler *string_type_handler(uint max_octet_length);
@ -537,6 +539,7 @@ public:
SORT_FIELD_ATTR *attr) const= 0;
virtual uint32 max_display_length(const Item *item) const= 0;
virtual bool Item_save_in_value(Item *item, st_value *value) const= 0;
virtual int Item_save_in_field(Item *item, Field *field,
bool no_conversions) const= 0;
@ -752,6 +755,7 @@ public:
DBUG_ASSERT(0);
return 0;
}
bool Item_save_in_value(Item *item, st_value *value) const;
int Item_save_in_field(Item *item, Field *field, bool no_conversions) const
{
DBUG_ASSERT(0);
@ -960,6 +964,7 @@ public:
void sortlength(THD *thd,
const Type_std_attributes *item,
SORT_FIELD_ATTR *attr) const;
bool Item_save_in_value(Item *item, st_value *value) const;
int Item_save_in_field(Item *item, Field *field, bool no_conversions) const;
Item_cache *Item_get_cache(THD *thd, const Item *item) const;
bool set_comparator_func(Arg_comparator *cmp) const;
@ -1019,6 +1024,7 @@ public:
const Type_std_attributes *item,
SORT_FIELD_ATTR *attr) const;
uint32 max_display_length(const Item *item) const;
bool Item_save_in_value(Item *item, st_value *value) const;
int Item_save_in_field(Item *item, Field *field, bool no_conversions) const;
Item_cache *Item_get_cache(THD *thd, const Item *item) const;
bool set_comparator_func(Arg_comparator *cmp) const;
@ -1074,6 +1080,7 @@ public:
void sortlength(THD *thd,
const Type_std_attributes *item,
SORT_FIELD_ATTR *attr) const;
bool Item_save_in_value(Item *item, st_value *value) const;
int Item_save_in_field(Item *item, Field *field, bool no_conversions) const;
Item_cache *Item_get_cache(THD *thd, const Item *item) const;
bool set_comparator_func(Arg_comparator *cmp) const;
@ -1202,6 +1209,7 @@ public:
{
return Item_temporal_precision(item, false);
}
bool Item_save_in_value(Item *item, st_value *value) const;
int Item_save_in_field(Item *item, Field *field, bool no_conversions) const;
String *print_item_value(THD *thd, Item *item, String *str) const
{
@ -1459,6 +1467,7 @@ public:
return Item_divisor_precision_increment_with_seconds(item);
}
const Type_handler *type_handler_for_comparison() const;
bool Item_save_in_value(Item *item, st_value *value) const;
int Item_save_in_field(Item *item, Field *field, bool no_conversions) const;
String *print_item_value(THD *thd, Item *item, String *str) const;
bool Item_hybrid_func_fix_attributes(THD *thd, Item_hybrid_func *func,
@ -1500,6 +1509,7 @@ class Type_handler_temporal_with_date: public Type_handler_temporal_result
public:
virtual ~Type_handler_temporal_with_date() {}
const Type_handler *type_handler_for_comparison() const;
bool Item_save_in_value(Item *item, st_value *value) const;
int Item_save_in_field(Item *item, Field *field, bool no_conversions) const;
cmp_item *make_cmp_item(THD *thd, CHARSET_INFO *cs) const;
in_vector *make_in_vector(THD *, const Item_func_in *, uint nargs) const;
@ -1698,6 +1708,7 @@ public:
const Type_handler *type_handler_for_tmp_table(const Item *item) const;
const Type_handler *type_handler_for_union(const Item *) const;
uint32 max_display_length(const Item *item) const { return 0; }
bool Item_save_in_value(Item *item, st_value *value) const;
Field *make_conversion_table_field(TABLE *, uint metadata,
const Field *target) const;
Field *make_table_field(const LEX_CSTRING *name,