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cc9cfecab7
Item_func_hybrid_field_type did not return correct field_type(), cmp_type() and result_type() in some cases, because cached_result_type and cached_field_type were set in independent pieces of the code and did not properly match to each other. Fix: - Removing Item_func_hybrid_result_type - Deriving Item_func_hybrid_field_type directly from Item_func - Introducing a new class Type_handler which guarantees that field_type(), cmp_type() and result_type() are always properly synchronized and using the new class in Item_func_hybrid_field_type.
107 lines
4.6 KiB
C++
107 lines
4.6 KiB
C++
/*
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Copyright (c) 2015 MariaDB Foundation.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#include "sql_type.h"
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static Type_handler_tiny type_handler_tiny;
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static Type_handler_short type_handler_short;
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static Type_handler_long type_handler_long;
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static Type_handler_longlong type_handler_longlong;
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static Type_handler_int24 type_handler_int24;
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static Type_handler_year type_handler_year;
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static Type_handler_bit type_handler_bit;
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static Type_handler_float type_handler_float;
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static Type_handler_double type_handler_double;
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static Type_handler_time type_handler_time;
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static Type_handler_date type_handler_date;
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static Type_handler_datetime type_handler_datetime;
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static Type_handler_timestamp type_handler_timestamp;
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static Type_handler_olddecimal type_handler_olddecimal;
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static Type_handler_newdecimal type_handler_newdecimal;
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static Type_handler_null type_handler_null;
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static Type_handler_string type_handler_string;
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static Type_handler_varchar type_handler_varchar;
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static Type_handler_tiny_blob type_handler_tiny_blob;
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static Type_handler_medium_blob type_handler_medium_blob;
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static Type_handler_long_blob type_handler_long_blob;
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static Type_handler_blob type_handler_blob;
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static Type_handler_geometry type_handler_geometry;
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Type_handler_hybrid_field_type::Type_handler_hybrid_field_type()
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:m_type_handler(&type_handler_double)
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{
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}
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const Type_handler *
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Type_handler_hybrid_field_type::get_handler_by_result_type(Item_result type)
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const
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{
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switch (type) {
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case REAL_RESULT: return &type_handler_double;
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case INT_RESULT: return &type_handler_longlong;
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case DECIMAL_RESULT: return &type_handler_newdecimal;
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case STRING_RESULT: return &type_handler_string;
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case TIME_RESULT:
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case ROW_RESULT:
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DBUG_ASSERT(0);
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}
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return &type_handler_string;
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}
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const Type_handler *
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Type_handler_hybrid_field_type::get_handler_by_field_type(enum_field_types type)
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const
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{
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switch (type) {
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case MYSQL_TYPE_DECIMAL: return &type_handler_olddecimal;
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case MYSQL_TYPE_NEWDECIMAL: return &type_handler_newdecimal;
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case MYSQL_TYPE_TINY: return &type_handler_tiny;
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case MYSQL_TYPE_SHORT: return &type_handler_short;
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case MYSQL_TYPE_LONG: return &type_handler_long;
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case MYSQL_TYPE_LONGLONG: return &type_handler_longlong;
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case MYSQL_TYPE_INT24: return &type_handler_int24;
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case MYSQL_TYPE_YEAR: return &type_handler_year;
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case MYSQL_TYPE_BIT: return &type_handler_bit;
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case MYSQL_TYPE_FLOAT: return &type_handler_float;
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case MYSQL_TYPE_DOUBLE: return &type_handler_double;
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case MYSQL_TYPE_NULL: return &type_handler_null;
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case MYSQL_TYPE_VARCHAR: return &type_handler_varchar;
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case MYSQL_TYPE_TINY_BLOB: return &type_handler_tiny_blob;
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case MYSQL_TYPE_MEDIUM_BLOB: return &type_handler_medium_blob;
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case MYSQL_TYPE_LONG_BLOB: return &type_handler_long_blob;
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case MYSQL_TYPE_BLOB: return &type_handler_blob;
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case MYSQL_TYPE_VAR_STRING: return &type_handler_varchar; // Map to VARCHAR
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case MYSQL_TYPE_STRING: return &type_handler_string;
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case MYSQL_TYPE_ENUM: return &type_handler_varchar; // Map to VARCHAR
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case MYSQL_TYPE_SET: return &type_handler_varchar; // Map to VARCHAR
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case MYSQL_TYPE_GEOMETRY: return &type_handler_geometry;
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case MYSQL_TYPE_TIMESTAMP: return &type_handler_timestamp;
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case MYSQL_TYPE_TIMESTAMP2: return &type_handler_timestamp;
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case MYSQL_TYPE_DATE: return &type_handler_date;
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case MYSQL_TYPE_TIME: return &type_handler_time;
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case MYSQL_TYPE_TIME2: return &type_handler_time;
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case MYSQL_TYPE_DATETIME: return &type_handler_datetime;
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case MYSQL_TYPE_DATETIME2: return &type_handler_datetime;
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case MYSQL_TYPE_NEWDATE: return &type_handler_date;
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};
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DBUG_ASSERT(0);
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return &type_handler_string;
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}
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