database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-29 05:21:33 +03:00
Code Activity

Merge

Browse Source
This commit is contained in:
Igor Babaev
2010-12-24 16:24:20 -08:00
parent f51a26885f a095346a9d
commit 1eb5e0e603
9 changed files with 466 additions and 28 deletions
Download Patch File Download Diff File Expand all files Collapse all files

34
sql/sql_join_cache.h
View File

@ -738,6 +738,10 @@ public:
class JOIN_CACHE_HASHED: public JOIN_CACHE
{
typedef uint (JOIN_CACHE_HASHED::*Hash_func) (uchar *key, uint key_len);
typedef bool (JOIN_CACHE_HASHED::*Hash_cmp_func) (uchar *key1, uchar *key2,
uint key_len);
private:
/* Size of the offset of a key entry in the hash table */
@ -761,14 +765,40 @@ private:
/* The offset of the data fields from the beginning of the record fields */
uint data_fields_offset;
uint get_hash_idx(uchar* key, uint key_len);
inline uint get_hash_idx_simple(uchar *key, uint key_len);
inline uint get_hash_idx_complex(uchar *key, uint key_len);
inline bool equal_keys_simple(uchar *key1, uchar *key2, uint key_len);
inline bool equal_keys_complex(uchar *key1, uchar *key2, uint key_len);
int init_hash_table();
void cleanup_hash_table();
protected:
/*
Index info on the TABLE_REF object used by the hash join
to look for matching records
*/
KEY *ref_key_info;
/*
Number of the key parts the TABLE_REF object used by the hash join
to look for matching records
*/
uint ref_used_key_parts;
/*
The hash function used in the hash table,
usually set by the init() method
*/
Hash_func hash_func;
/*
The function to check whether two key entries in the hash table
are equal or not, usually set by the init() method
*/
Hash_cmp_func hash_cmp_func;
/*
Length of a key value.
It is assumed that all key values have the same length.