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Kirill Smelkov
mariadb
Commits
8e228850
Commit
8e228850
authored
Aug 31, 2010
by
Igor Babaev
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Fixes in function specs.
parent
3165c749
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15 deletions
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sql/sql_join_cache.cc
sql/sql_join_cache.cc
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sql/sql_join_cache.cc
View file @
8e228850
...
...
@@ -927,7 +927,7 @@ int JOIN_CACHE::realloc_buffer()
It is quite natural to put almost all other constructor actions into
this function.
RETURN
RETURN
VALUE
0 initialization with buffer allocations has been succeeded
1 otherwise
*/
...
...
@@ -2078,7 +2078,7 @@ finish:
The function assumes that the match flag for any record in any cache
is placed in the first byte occupied by the record fields.
RETURN
RETURN
VALUE
TRUE the match flag is set by this call for the first time
FALSE the match flag has been set before this call
*/
...
...
@@ -2130,7 +2130,7 @@ bool JOIN_CACHE::set_match_flag_if_none(JOIN_TAB *first_inner,
case the function calls the join_tab->next_select method to generate
all full extension for this partial join match.
RETURN
RETURN
VALUE
return one of enum_nested_loop_state.
*/
...
...
@@ -2185,7 +2185,7 @@ enum_nested_loop_state JOIN_CACHE::generate_full_extensions(uchar *rec_ptr)
Setting the match flag on can trigger re-evaluation of pushdown conditions
for the record when join_tab is the last inner table of an outer join.
RETURN
RETURN
VALUE
TRUE there is a match
FALSE there is no match
*/
...
...
@@ -2256,7 +2256,7 @@ inline bool JOIN_CACHE::check_match(uchar *rec_ptr)
The same implementation of the virtual method join_null_complements
is used for BNL/BNLH/BKA/BKA join algorthm.
RETURN
RETURN
VALUE
return one of enum_nested_loop_state.
*/
...
...
@@ -2345,7 +2345,7 @@ finish:
The function is supposed to be called by the init methods of the classes
derived from JOIN_CACHE_HASHED.
RETURN
RETURN
VALUE
0 initialization with buffer allocations has been succeeded
1 otherwise
*/
...
...
@@ -2516,7 +2516,7 @@ uint JOIN_CACHE_HASHED::get_max_key_addon_space_per_record()
Additionally to what the default implementation does this function
cleans up the hash table allocated within the buffer.
RETURN
RETURN
VALUE
none
*/
...
...
@@ -2549,7 +2549,7 @@ void JOIN_CACHE_HASHED::reset(bool for_writing)
element added for the key or, if the use_emb_key flag is set, remains in
the record from the partial join.
RETURN
RETURN
VALUE
TRUE if it has been decided that it should be the last record
in the join buffer,
FALSE otherwise
...
...
@@ -2642,7 +2642,7 @@ bool JOIN_CACHE_HASHED::put_record()
function get_record does this implementation skips the link element
used to connect the records with the same key into a chain.
RETURN
RETURN
VALUE
TRUE there are no more records to read from the join buffer
FALSE otherwise
*/
...
...
@@ -2665,7 +2665,7 @@ bool JOIN_CACHE_HASHED::get_record()
the same as the default implementation does, but it takes into account
the link element used to connect the records with the same key into a chain.
RETURN
RETURN
VALUE
TRUE the match flag is on and the record has been skipped
FALSE the match flag is off
*/
...
...
@@ -2800,7 +2800,7 @@ void JOIN_CACHE_HASHED:: cleanup_hash_table()
point to the position in the join buffer storing the reference to the
last element of this chain.
RETURN
RETURN
VALUE
TRUE if each retrieved record has its match flag set on
FALSE otherwise
*/
...
...
@@ -3002,7 +3002,7 @@ bool JOIN_CACHE_BNL::prepare_look_for_matches(bool skip_last)
and returns the current value of the cursor 'pos' as the position of
the record to be processed.
RETURN
RETURN
VALUE
pointer to the position right after the prefix of the current record
in the join buffer if the there is another record to iterate over,
0 - otherwise.
...
...
@@ -3031,7 +3031,7 @@ uchar *JOIN_CACHE_BNL::get_next_candidate_for_match()
ref_ptr has its match flag set on and, if so, just skips this record
setting the value of the cursor 'pos' to the position right after it.
RETURN
RETURN
VALUE
TRUE the record referenced by rec_ptr has been skipped
FALSE otherwise
*/
...
...
@@ -3217,7 +3217,7 @@ uchar *JOIN_CACHE_BNLH::get_next_candidate_for_match()
method get_match_flag_by_pos to check whether the record referenced
by ref_ptr has its match flag set on.
RETURN
RETURN
VALUE
TRUE the record referenced by rec_ptr has its match flag set on
FALSE otherwise
*/
...
...
@@ -4082,7 +4082,7 @@ int JOIN_CACHE_BKAH::init()
This should be done by a special virtual method
get_partial_record_by_pos().
RETURN
RETURN
VALUE
1 any record combination from the chain referred by range_info
does not satisfy the index condition
0 otherwise
...
...
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