database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-30 16:24:05 +03:00
Code Activity

MDEV-9220 Split filesort.cc:make_sortkey() and filesort.cc::sortlength() into virtual methods in Type_handler

Browse Source
This commit is contained in:
Alexander Barkov
2016-01-12 17:03:29 +04:00
parent 454589b67f
commit 5b9ee3f2ae
7 changed files with 312 additions and 209 deletions
Download Patch File Download Diff File Expand all files Collapse all files

50
sql/sql_type.h
View File

@ -25,12 +25,19 @@
class Field;
class Item;
class Type_std_attributes;
class Sort_param;
struct TABLE;
struct SORT_FIELD_ATTR;
class Type_handler
{
protected:
const Type_handler *string_type_handler(uint max_octet_length) const;
void make_sort_key_longlong(uchar *to,
bool maybe_null, bool null_value,
bool unsigned_flag,
longlong value) const;
public:
static const Type_handler *get_handler_by_field_type(enum_field_types type);
static const Type_handler *get_handler_by_real_type(enum_field_types type);
@ -79,6 +86,12 @@ public:
virtual Field *make_conversion_table_field(TABLE *TABLE,
uint metadata,
const Field *target) const= 0;
virtual void make_sort_key(uchar *to, Item *item,
const SORT_FIELD_ATTR *sort_field,
Sort_param *param) const= 0;
virtual void sortlength(THD *thd,
const Type_std_attributes *item,
SORT_FIELD_ATTR *attr) const= 0;
};
@ -90,6 +103,11 @@ public:
Item_result result_type() const { return REAL_RESULT; }
Item_result cmp_type() const { return REAL_RESULT; }
virtual ~Type_handler_real_result() {}
void make_sort_key(uchar *to, Item *item, const SORT_FIELD_ATTR *sort_field,
Sort_param *param) const;
void sortlength(THD *thd,
const Type_std_attributes *item,
SORT_FIELD_ATTR *attr) const;
};
@ -100,6 +118,11 @@ public:
Item_result cmp_type() const { return DECIMAL_RESULT; }
virtual ~Type_handler_decimal_result() {};
Field *make_num_distinct_aggregator_field(MEM_ROOT *, const Item *) const;
void make_sort_key(uchar *to, Item *item, const SORT_FIELD_ATTR *sort_field,
Sort_param *param) const;
void sortlength(THD *thd,
const Type_std_attributes *item,
SORT_FIELD_ATTR *attr) const;
};
@ -110,6 +133,11 @@ public:
Item_result cmp_type() const { return INT_RESULT; }
virtual ~Type_handler_int_result() {}
Field *make_num_distinct_aggregator_field(MEM_ROOT *, const Item *) const;
void make_sort_key(uchar *to, Item *item, const SORT_FIELD_ATTR *sort_field,
Sort_param *param) const;
void sortlength(THD *thd,
const Type_std_attributes *item,
SORT_FIELD_ATTR *attr) const;
};
@ -119,6 +147,11 @@ public:
Item_result result_type() const { return STRING_RESULT; }
Item_result cmp_type() const { return TIME_RESULT; }
virtual ~Type_handler_temporal_result() {}
void make_sort_key(uchar *to, Item *item, const SORT_FIELD_ATTR *sort_field,
Sort_param *param) const;
void sortlength(THD *thd,
const Type_std_attributes *item,
SORT_FIELD_ATTR *attr) const;
};
@ -131,6 +164,11 @@ public:
const Type_handler *
type_handler_adjusted_to_max_octet_length(uint max_octet_length,
CHARSET_INFO *cs) const;
void make_sort_key(uchar *to, Item *item, const SORT_FIELD_ATTR *sort_field,
Sort_param *param) const;
void sortlength(THD *thd,
const Type_std_attributes *item,
SORT_FIELD_ATTR *attr) const;
};
@ -526,6 +564,18 @@ public:
{
return m_type_handler->make_conversion_table_field(table, metadata, target);
}
void make_sort_key(uchar *to, Item *item, const SORT_FIELD_ATTR *sort_field,
Sort_param *param) const
{
m_type_handler->make_sort_key(to, item, sort_field, param);
}
void sortlength(THD *thd,
const Type_std_attributes *item,
SORT_FIELD_ATTR *attr) const
{
m_type_handler->sortlength(thd, item, attr);
}
};