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10.0-base merge

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This commit is contained in:
Sergei Golubchik
2013-07-18 16:46:57 +02:00
parent 8a23ae088d 97e640b9ae
commit 5f6380adde
1818 changed files with 11042 additions and 3689 deletions
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37
sql/handler.h
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@ -370,9 +370,9 @@ enum legacy_db_type
DB_TYPE_PARTITION_DB=20,
DB_TYPE_BINLOG=21,
DB_TYPE_PBXT=23,
DB_TYPE_MARIA=27,
DB_TYPE_PERFORMANCE_SCHEMA=28,
DB_TYPE_FIRST_DYNAMIC=42,
DB_TYPE_ARIA=42,
DB_TYPE_FIRST_DYNAMIC=43,
DB_TYPE_DEFAULT=127 // Must be last
};
/*
@ -1227,6 +1227,11 @@ static inline LEX_STRING *hton_name(const handlerton *hton)
return &(hton2plugin[hton->slot]->name);
}
static inline handlerton *plugin_hton(plugin_ref plugin)
{
return plugin_data(plugin, handlerton *);
}
static inline sys_var *find_hton_sysvar(handlerton *hton, st_mysql_sys_var *var)
{
return find_plugin_sysvar(hton2plugin[hton->slot], var);
@ -2859,7 +2864,33 @@ public:
Pops the top if condition stack, if stack is not empty.
*/
virtual void cond_pop() { return; };
/**
Push down an index condition to the handler.
The server will use this method to push down a condition it wants
the handler to evaluate when retrieving records using a specified
index. The pushed index condition will only refer to fields from
this handler that is contained in the index (but it may also refer
to fields in other handlers). Before the handler evaluates the
condition it must read the content of the index entry into the
record buffer.
The handler is free to decide if and how much of the condition it
will take responsibility for evaluating. Based on this evaluation
it should return the part of the condition it will not evaluate.
If it decides to evaluate the entire condition it should return
NULL. If it decides not to evaluate any part of the condition it
should return a pointer to the same condition as given as argument.
@param keyno the index number to evaluate the condition on
@param idx_cond the condition to be evaluated by the handler
@return The part of the pushed condition that the handler decides
not to evaluate
*/
virtual Item *idx_cond_push(uint keyno, Item* idx_cond) { return idx_cond; }
/** Reset information about pushed index conditions */
virtual void cancel_pushed_idx_cond()
{
@ -3238,7 +3269,7 @@ public:
int ha_discover_table(THD *thd, TABLE_SHARE *share);
int ha_discover_table_names(THD *thd, LEX_STRING *db, MY_DIR *dirp,
Discovered_table_list *result);
Discovered_table_list *result, bool reusable);
bool ha_table_exists(THD *thd, const char *db, const char *table_name,
handlerton **hton= 0);
#endif