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79644bdb8e
so that all integer fields can be packed into 64 bits. (Bug #20877) dtype_t: Change the type of all bit-fields to unsigned. dict_table_get_nth_col(), dict_table_get_sys_col_noninline(), dict_table_get_sys_col(), dict_field_get_col(): Return const dict_col_t*, so that changes to dict_col_t can be detected more easily. Add const to many dict_col_t* declarations. dict_index_get_nth_type(): Replace with dict_index_get_nth_col(). dict_col_get_type(): Replace with dict_col_copy_type(). dict_col_get_min_size(), dict_col_get_max_size(), dict_col_get_fixed_size(), dict_col_get_sql_null_size(): New functions. dtype_get_at_most_n_mbchars(): Replace the parameter dtype with the parameters prtype, mbminlen, mbmaxlen. dtype_get_pad_char(), cmp_data_data(), cmp_data_data_slow(), cmp_whole_field(): Replace the dtype_t* parameter with the ulint parameters mtype, prtype. dtype_copy(): Add a const qualifier to type2 (the one being copied from). dtype_set_mblen(): Replaced with dtype_get_mblen(). dtype_get_fixed_size_low(), dtype_get_min_size_low(), dtype_get_fixed_max_low(): Replace dtype_get_fixed_size(), dtype_get_min_size(), and dtype_get_max_size(). These are used by the dict_col_get_{fixed,min,max}_size() functions. cmp_types_are_equal(): Replace with cmp_cols_are_equal(). dict_table_get_col_name(): Add a const qualifier parameter to the parameter "table". dtype_binary, dtype_binary_val: Remove. dtype_is_fixed_size(): Remove.
76 lines
2.3 KiB
Text
76 lines
2.3 KiB
Text
/***********************************************************************
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Comparison services for records
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(c) 1994-1996 Innobase Oy
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Created 7/1/1994 Heikki Tuuri
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************************************************************************/
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/*****************************************************************
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This function is used to compare two data fields for which we know the
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data type. */
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UNIV_INLINE
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int
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cmp_data_data(
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/*==========*/
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/* out: 1, 0, -1, if data1 is greater, equal,
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less than data2, respectively */
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ulint mtype, /* in: main type */
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ulint prtype, /* in: precise type */
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byte* data1, /* in: data field (== a pointer to a memory
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buffer) */
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ulint len1, /* in: data field length or UNIV_SQL_NULL */
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byte* data2, /* in: data field (== a pointer to a memory
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buffer) */
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ulint len2) /* in: data field length or UNIV_SQL_NULL */
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{
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return(cmp_data_data_slow(mtype, prtype, data1, len1, data2, len2));
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}
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/*****************************************************************
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This function is used to compare two dfields where at least the first
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has its data type field set. */
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UNIV_INLINE
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int
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cmp_dfield_dfield(
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/*==============*/
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/* out: 1, 0, -1, if dfield1 is greater, equal,
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less than dfield2, respectively */
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dfield_t* dfield1,/* in: data field; must have type field set */
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dfield_t* dfield2)/* in: data field */
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{
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const dtype_t* type;
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ut_ad(dfield_check_typed(dfield1));
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type = dfield_get_type(dfield1);
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return(cmp_data_data(type->mtype, type->prtype,
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dfield_get_data(dfield1),
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dfield_get_len(dfield1),
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dfield_get_data(dfield2),
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dfield_get_len(dfield2)));
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}
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/*****************************************************************
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This function is used to compare two physical records. Only the common
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first fields are compared. */
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UNIV_INLINE
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int
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cmp_rec_rec(
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/*========*/
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/* out: 1, 0 , -1 if rec1 is greater, equal,
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less, respectively, than rec2; only the common
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first fields are compared */
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rec_t* rec1, /* in: physical record */
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rec_t* rec2, /* in: physical record */
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const ulint* offsets1,/* in: rec_get_offsets(rec1, index) */
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const ulint* offsets2,/* in: rec_get_offsets(rec2, index) */
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dict_index_t* index) /* in: data dictionary index */
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{
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ulint match_f = 0;
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ulint match_b = 0;
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return(cmp_rec_rec_with_match(rec1, rec2, offsets1, offsets2, index,
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&match_f, &match_b));
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}
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