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author | Monty <monty@mariadb.org> | 2017-04-23 19:39:57 +0300 |
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committer | Monty <monty@mariadb.org> | 2017-04-23 22:35:46 +0300 |
commit | 5a759d31f766087d5e135e1d3d3d987693bc9b88 (patch) | |
tree | 93c7359e8b211e269bfa73e5f595f34b9dca575a /sql/event_data_objects.cc | |
parent | cba84469eb96481568a9f4ddf3f2989c49c9294c (diff) | |
download | mariadb-git-5a759d31f766087d5e135e1d3d3d987693bc9b88.tar.gz |
Changing field::field_name and Item::name to LEX_CSTRING
Benefits of this patch:
- Removed a lot of calls to strlen(), especially for field_string
- Strings generated by parser are now const strings, less chance of
accidently changing a string
- Removed a lot of calls with LEX_STRING as parameter (changed to pointer)
- More uniform code
- Item::name_length was not kept up to date. Now fixed
- Several bugs found and fixed (Access to null pointers,
access of freed memory, wrong arguments to printf like functions)
- Removed a lot of casts from (const char*) to (char*)
Changes:
- This caused some ABI changes
- lex_string_set now uses LEX_CSTRING
- Some fucntions are now taking const char* instead of char*
- Create_field::change and after changed to LEX_CSTRING
- handler::connect_string, comment and engine_name() changed to LEX_CSTRING
- Checked printf() related calls to find bugs. Found and fixed several
errors in old code.
- A lot of changes from LEX_STRING to LEX_CSTRING, especially related to
parsing and events.
- Some changes from LEX_STRING and LEX_STRING & to LEX_CSTRING*
- Some changes for char* to const char*
- Added printf argument checking for my_snprintf()
- Introduced null_clex_str, star_clex_string, temp_lex_str to simplify
code
- Added item_empty_name and item_used_name to be able to distingush between
items that was given an empty name and items that was not given a name
This is used in sql_yacc.yy to know when to give an item a name.
- select table_name."*' is not anymore same as table_name.*
- removed not used function Item::rename()
- Added comparision of item->name_length before some calls to
my_strcasecmp() to speed up comparison
- Moved Item_sp_variable::make_field() from item.h to item.cc
- Some minimal code changes to avoid copying to const char *
- Fixed wrong error message in wsrep_mysql_parse()
- Fixed wrong code in find_field_in_natural_join() where real_item() was
set when it shouldn't
- ER_ERROR_ON_RENAME was used with extra arguments.
- Removed some (wrong) ER_OUTOFMEMORY, as alloc_root will already
give the error.
TODO:
- Check possible unsafe casts in plugin/auth_examples/qa_auth_interface.c
- Change code to not modify LEX_CSTRING for database name
(as part of lower_case_table_names)
Diffstat (limited to 'sql/event_data_objects.cc')
-rw-r--r-- | sql/event_data_objects.cc | 53 |
1 files changed, 27 insertions, 26 deletions
diff --git a/sql/event_data_objects.cc b/sql/event_data_objects.cc index 9e1ee6f30f9..86bdadabc17 100644 --- a/sql/event_data_objects.cc +++ b/sql/event_data_objects.cc @@ -171,13 +171,13 @@ Event_creation_ctx::load_from_db(THD *thd, */ bool -Event_queue_element_for_exec::init(LEX_STRING db, LEX_STRING n) +Event_queue_element_for_exec::init(LEX_CSTRING db, LEX_CSTRING n) { if (!(dbname.str= my_strndup(db.str, dbname.length= db.length, MYF(MY_WME)))) return TRUE; if (!(name.str= my_strndup(n.str, name.length= n.length, MYF(MY_WME)))) { - my_free(dbname.str); + my_free(const_cast<char*>(dbname.str)); return TRUE; } return FALSE; @@ -193,8 +193,8 @@ Event_queue_element_for_exec::init(LEX_STRING db, LEX_STRING n) Event_queue_element_for_exec::~Event_queue_element_for_exec() { - my_free(dbname.str); - my_free(name.str); + my_free(const_cast<char*>(dbname.str)); + my_free(const_cast<char*>(name.str)); } @@ -233,7 +233,7 @@ Event_basic::~Event_basic() /* - Short function to load a char column into a LEX_STRING + Short function to load a char column into a LEX_CSTRING SYNOPSIS Event_basic::load_string_field() @@ -249,7 +249,7 @@ Event_basic::load_string_fields(Field **fields, ...) bool ret= FALSE; va_list args; enum enum_events_table_field field_name; - LEX_STRING *field_value; + LEX_CSTRING *field_value; DBUG_ENTER("Event_basic::load_string_fields"); @@ -257,7 +257,7 @@ Event_basic::load_string_fields(Field **fields, ...) field_name= (enum enum_events_table_field) va_arg(args, int); while (field_name < ET_FIELD_COUNT) { - field_value= va_arg(args, LEX_STRING *); + field_value= va_arg(args, LEX_CSTRING *); if ((field_value->str= get_field(&mem_root, fields[field_name])) == NullS) { ret= TRUE; @@ -274,9 +274,9 @@ Event_basic::load_string_fields(Field **fields, ...) bool -Event_basic::load_time_zone(THD *thd, const LEX_STRING tz_name) +Event_basic::load_time_zone(THD *thd, const LEX_CSTRING *tz_name) { - String str(tz_name.str, &my_charset_latin1); + String str(tz_name->str, &my_charset_latin1); time_zone= my_tz_find(thd, &str); return (time_zone == NULL); @@ -391,9 +391,9 @@ Event_timed::init() bool Event_job_data::load_from_row(THD *thd, TABLE *table) { - char *ptr; + const char *ptr; size_t len; - LEX_STRING tz_name; + LEX_CSTRING tz_name; DBUG_ENTER("Event_job_data::load_from_row"); @@ -412,7 +412,7 @@ Event_job_data::load_from_row(THD *thd, TABLE *table) ET_FIELD_COUNT)) DBUG_RETURN(TRUE); - if (load_time_zone(thd, tz_name)) + if (load_time_zone(thd, &tz_name)) DBUG_RETURN(TRUE); Event_creation_ctx::load_from_db(thd, &mem_root, dbname.str, name.str, table, @@ -452,9 +452,9 @@ Event_job_data::load_from_row(THD *thd, TABLE *table) bool Event_queue_element::load_from_row(THD *thd, TABLE *table) { - char *ptr; + const char *ptr; MYSQL_TIME time; - LEX_STRING tz_name; + LEX_CSTRING tz_name; DBUG_ENTER("Event_queue_element::load_from_row"); @@ -472,7 +472,7 @@ Event_queue_element::load_from_row(THD *thd, TABLE *table) ET_FIELD_COUNT)) DBUG_RETURN(TRUE); - if (load_time_zone(thd, tz_name)) + if (load_time_zone(thd, &tz_name)) DBUG_RETURN(TRUE); starts_null= table->field[ET_FIELD_STARTS]->is_null(); @@ -519,7 +519,7 @@ Event_queue_element::load_from_row(THD *thd, TABLE *table) int i; char buff[MAX_FIELD_WIDTH]; String str(buff, sizeof(buff), &my_charset_bin); - LEX_STRING tmp; + LEX_CSTRING tmp; table->field[ET_FIELD_TRANSIENT_INTERVAL]->val_str(&str); if (!(tmp.length= str.length())) @@ -590,7 +590,7 @@ Event_queue_element::load_from_row(THD *thd, TABLE *table) bool Event_timed::load_from_row(THD *thd, TABLE *table) { - char *ptr; + const char *ptr; size_t len; DBUG_ENTER("Event_timed::load_from_row"); @@ -1203,7 +1203,7 @@ Event_timed::get_create_event(THD *thd, String *buf) buf->append(STRING_WITH_LEN(" ON SCHEDULE EVERY ")); buf->append(expr_buf); buf->append(' '); - LEX_STRING *ival= &interval_type_to_name[interval]; + LEX_CSTRING *ival= &interval_type_to_name[interval]; buf->append(ival->str, ival->length); if (!starts_null) @@ -1249,7 +1249,7 @@ Event_timed::get_create_event(THD *thd, String *buf) bool Event_job_data::construct_sp_sql(THD *thd, String *sp_sql) { - LEX_STRING buffer; + LEX_CSTRING buffer; const uint STATIC_SQL_LENGTH= 44; DBUG_ENTER("Event_job_data::construct_sp_sql"); @@ -1298,7 +1298,7 @@ Event_job_data::construct_sp_sql(THD *thd, String *sp_sql) bool Event_job_data::construct_drop_event_sql(THD *thd, String *sp_sql) { - LEX_STRING buffer; + LEX_CSTRING buffer; const uint STATIC_SQL_LENGTH= 14; DBUG_ENTER("Event_job_data::construct_drop_event_sql"); @@ -1478,7 +1478,7 @@ end: WSREP_TO_ISOLATION_BEGIN(WSREP_MYSQL_DB, NULL, NULL); } - ret= Events::drop_event(thd, dbname, name, FALSE); + ret= Events::drop_event(thd, &dbname, &name, FALSE); WSREP_TO_ISOLATION_END; @@ -1519,9 +1519,9 @@ end: */ bool -event_basic_db_equal(LEX_STRING db, Event_basic *et) +event_basic_db_equal(const LEX_CSTRING *db, Event_basic *et) { - return !sortcmp_lex_string(et->dbname, db, system_charset_info); + return !sortcmp_lex_string(&et->dbname, db, system_charset_info); } @@ -1540,10 +1540,11 @@ event_basic_db_equal(LEX_STRING db, Event_basic *et) */ bool -event_basic_identifier_equal(LEX_STRING db, LEX_STRING name, Event_basic *b) +event_basic_identifier_equal(const LEX_CSTRING *db, const LEX_CSTRING *name, + Event_basic *b) { - return !sortcmp_lex_string(name, b->name, system_charset_info) && - !sortcmp_lex_string(db, b->dbname, system_charset_info); + return !sortcmp_lex_string(name, &b->name, system_charset_info) && + !sortcmp_lex_string(db, &b->dbname, system_charset_info); } /** |