diff options
Diffstat (limited to 'mysys/my_handler.c')
| -rw-r--r-- | mysys/my_handler.c | 90 |
1 files changed, 81 insertions, 9 deletions
diff --git a/mysys/my_handler.c b/mysys/my_handler.c index 1c3bb20426e..bf75d992f9d 100644 --- a/mysys/my_handler.c +++ b/mysys/my_handler.c @@ -16,9 +16,12 @@ MA 02111-1307, USA */ #include <my_global.h> -#include "my_handler.h" +#include <m_ctype.h> +#include <my_base.h> +#include <my_handler.h> +#include <my_sys.h> -int mi_compare_text(CHARSET_INFO *charset_info, uchar *a, uint a_length, +int ha_compare_text(CHARSET_INFO *charset_info, uchar *a, uint a_length, uchar *b, uint b_length, my_bool part_key, my_bool skip_end_space) { @@ -174,7 +177,7 @@ int ha_key_cmp(register HA_KEYSEG *keyseg, register uchar *a, next_key_length=key_length-b_length-pack_length; if (piks && - (flag=mi_compare_text(keyseg->charset,a,a_length,b,b_length, + (flag=ha_compare_text(keyseg->charset,a,a_length,b,b_length, (my_bool) ((nextflag & SEARCH_PREFIX) && next_key_length <= 0), (my_bool)!(nextflag & SEARCH_PREFIX)))) @@ -187,7 +190,7 @@ int ha_key_cmp(register HA_KEYSEG *keyseg, register uchar *a, { uint length=(uint) (end-a), a_length=length, b_length=length; if (piks && - (flag= mi_compare_text(keyseg->charset, a, a_length, b, b_length, + (flag= ha_compare_text(keyseg->charset, a, a_length, b, b_length, (my_bool) ((nextflag & SEARCH_PREFIX) && next_key_length <= 0), (my_bool)!(nextflag & SEARCH_PREFIX)))) @@ -235,7 +238,7 @@ int ha_key_cmp(register HA_KEYSEG *keyseg, register uchar *a, next_key_length=key_length-b_length-pack_length; if (piks && - (flag= mi_compare_text(keyseg->charset,a,a_length,b,b_length, + (flag= ha_compare_text(keyseg->charset,a,a_length,b,b_length, (my_bool) ((nextflag & SEARCH_PREFIX) && next_key_length <= 0), (my_bool) ((nextflag & (SEARCH_FIND | @@ -482,12 +485,15 @@ end: DESCRIPTION Find the first NULL value in index-suffix values tuple. - TODO Consider optimizing this fuction or its use so we don't search for - NULL values in completely NOT NULL index suffixes. + + TODO + Consider optimizing this function or its use so we don't search for + NULL values in completely NOT NULL index suffixes. RETURN - First key part that has NULL as value in values tuple, or the last key part - (with keyseg->type==HA_TYPE_END) if values tuple doesn't contain NULLs. + First key part that has NULL as value in values tuple, or the last key + part (with keyseg->type==HA_TYPE_END) if values tuple doesn't contain + NULLs. */ HA_KEYSEG *ha_find_null(HA_KEYSEG *keyseg, uchar *a) @@ -557,3 +563,69 @@ HA_KEYSEG *ha_find_null(HA_KEYSEG *keyseg, uchar *a) } return keyseg; } + + +/* + Errors a handler can give you +*/ + +static const char *handler_error_messages[]= +{ + "Didn't find key on read or update", + "Duplicate key on write or update", + "Undefined handler error 122", + "Someone has changed the row since it was read (while the table was locked to prevent it)", + "Wrong index given to function", + "Undefined handler error 125", + "Index file is crashed", + "Record file is crashed", + "Out of memory in engine", + "Undefined handler error 129", + "Incorrect file format", + "Command not supported by database", + "Old database file", + "No record read before update", + "Record was already deleted (or record file crashed)", + "No more room in record file", + "No more room in index file", + "No more records (read after end of file)", + "Unsupported extension used for table", + "Too big row", + "Wrong create options", + "Duplicate unique key or constraint on write or update", + "Unknown character set used in table", + "Conflicting table definitions in sub-tables of MERGE table", + "Table is crashed and last repair failed", + "Table was marked as crashed and should be repaired", + "Lock timed out; Retry transaction", + "Lock table is full; Restart program with a larger locktable", + "Updates are not allowed under a read only transactions", + "Lock deadlock; Retry transaction", + "Foreign key constraint is incorrectly formed", + "Cannot add a child row", + "Cannot delete a parent row", + "Unknown handler error" +}; + + +/* + Register handler error messages for usage with my_error() + + NOTES + This is safe to call multiple times as my_error_register() + will ignore calls to register already registered error numbers. +*/ + + +void my_handler_error_register(void) +{ + my_error_register(handler_error_messages, HA_ERR_FIRST, + HA_ERR_FIRST+ array_elements(handler_error_messages)-1); +} + + +void my_handler_error_unregister(void) +{ + my_error_unregister(HA_ERR_FIRST, + HA_ERR_FIRST+ array_elements(handler_error_messages)-1); +} |