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MDEV-11692 Comparison data type aggregation for pluggable data types

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This commit is contained in:
Alexander Barkov
2017-02-01 08:00:50 +04:00
parent 095ea087b4
commit 68235f2c2b
20 changed files with 1174 additions and 124 deletions
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9
sql/sql_type.h
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@ -1134,6 +1134,7 @@ public:
virtual ~Type_handler_null() {}
const Name name() const { return m_name_null; }
enum_field_types field_type() const { return MYSQL_TYPE_NULL; }
const Type_handler *type_handler_for_comparison() const;
uint32 max_display_length(const Item *item) const { return 0; }
Field *make_conversion_table_field(TABLE *, uint metadata,
const Field *target) const;
@ -1220,6 +1221,7 @@ public:
virtual ~Type_handler_geometry() {}
const Name name() const { return m_name_geometry; }
enum_field_types field_type() const { return MYSQL_TYPE_GEOMETRY; }
const Type_handler *type_handler_for_comparison() const;
Field *make_conversion_table_field(TABLE *, uint metadata,
const Field *target) const;
bool is_traditional_type() const
@ -1316,8 +1318,10 @@ public:
{
return (m_type_handler= Type_handler::get_handler_by_real_type(type));
}
void aggregate_for_comparison(const Type_handler *other);
bool aggregate_for_comparison(Item **items, uint nitems);
bool aggregate_for_comparison(const Type_handler *other);
bool aggregate_for_comparison(const char *funcname,
Item **items, uint nitems,
bool treat_int_to_uint_as_decimal);
bool aggregate_for_result(const Type_handler *other);
bool aggregate_for_result(const char *funcname,
Item **item, uint nitems, bool treat_bit_as_number);
@ -1396,5 +1400,6 @@ public:
};
extern Type_aggregator type_aggregator_for_result;
extern Type_aggregator type_aggregator_for_comparison;
#endif /* SQL_TYPE_H_INCLUDED */