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Non-functional change: convert the switch in convert_search_mode_to_innobase()

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to the InnoDB coding style.
This commit is contained in:
vasil 2007-11-14 13:15:24 +00:00
parent eddb125877
commit 6c6208ac94
1 changed files with 39 additions and 32 deletions
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71
handler/ha_innodb.cc
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@ -3976,38 +3976,45 @@ convert_search_mode_to_innobase(
enum ha_rkey_function find_flag) enum ha_rkey_function find_flag)
{ {
switch (find_flag) { switch (find_flag) {
case HA_READ_KEY_EXACT: return(PAGE_CUR_GE); case HA_READ_KEY_EXACT:
/* the above does not require the index to be UNIQUE */ /* this does not require the index to be UNIQUE */
case HA_READ_KEY_OR_NEXT: return(PAGE_CUR_GE); return(PAGE_CUR_GE);
case HA_READ_KEY_OR_PREV: return(PAGE_CUR_LE); case HA_READ_KEY_OR_NEXT:
case HA_READ_AFTER_KEY: return(PAGE_CUR_G); return(PAGE_CUR_GE);
case HA_READ_BEFORE_KEY: return(PAGE_CUR_L); case HA_READ_KEY_OR_PREV:
case HA_READ_PREFIX: return(PAGE_CUR_GE); return(PAGE_CUR_LE);
case HA_READ_PREFIX_LAST: return(PAGE_CUR_LE); case HA_READ_AFTER_KEY:
case HA_READ_PREFIX_LAST_OR_PREV:return(PAGE_CUR_LE); return(PAGE_CUR_G);
/* In MySQL-4.0 HA_READ_PREFIX and HA_READ_PREFIX_LAST always case HA_READ_BEFORE_KEY:
pass a complete-field prefix of a key value as the search return(PAGE_CUR_L);
tuple. I.e., it is not allowed that the last field would case HA_READ_PREFIX:
just contain n first bytes of the full field value. return(PAGE_CUR_GE);
MySQL uses a 'padding' trick to convert LIKE 'abc%' case HA_READ_PREFIX_LAST:
type queries so that it can use as a search tuple return(PAGE_CUR_LE);
a complete-field-prefix of a key value. Thus, the InnoDB case HA_READ_PREFIX_LAST_OR_PREV:
search mode PAGE_CUR_LE_OR_EXTENDS is never used. return(PAGE_CUR_LE);
TODO: when/if MySQL starts to use also partial-field /* In MySQL-4.0 HA_READ_PREFIX and HA_READ_PREFIX_LAST always
prefixes, we have to deal with stripping of spaces pass a complete-field prefix of a key value as the search
and comparison of non-latin1 char type fields in tuple. I.e., it is not allowed that the last field would
innobase_mysql_cmp() to get PAGE_CUR_LE_OR_EXTENDS to just contain n first bytes of the full field value.
work correctly. */ MySQL uses a 'padding' trick to convert LIKE 'abc%'
case HA_READ_MBR_CONTAIN: type queries so that it can use as a search tuple
case HA_READ_MBR_INTERSECT: a complete-field-prefix of a key value. Thus, the InnoDB
case HA_READ_MBR_WITHIN: search mode PAGE_CUR_LE_OR_EXTENDS is never used.
case HA_READ_MBR_DISJOINT: TODO: when/if MySQL starts to use also partial-field
my_error(ER_TABLE_CANT_HANDLE_SPKEYS, MYF(0)); prefixes, we have to deal with stripping of spaces
return(PAGE_CUR_UNSUPP); and comparison of non-latin1 char type fields in
/* do not use "default:" in order to produce a gcc warning: innobase_mysql_cmp() to get PAGE_CUR_LE_OR_EXTENDS to
enumeration value '...' not handled in switch work correctly. */
(if -Wswitch or -Wall is used) case HA_READ_MBR_CONTAIN:
*/ case HA_READ_MBR_INTERSECT:
case HA_READ_MBR_WITHIN:
case HA_READ_MBR_DISJOINT:
my_error(ER_TABLE_CANT_HANDLE_SPKEYS, MYF(0));
return(PAGE_CUR_UNSUPP);
/* do not use "default:" in order to produce a gcc warning:
enumeration value '...' not handled in switch
(if -Wswitch or -Wall is used) */
} }
my_error(ER_CHECK_NOT_IMPLEMENTED, MYF(0), "this functionality"); my_error(ER_CHECK_NOT_IMPLEMENTED, MYF(0), "this functionality");