query expansion for fulltext search

myisam/ft_boolean_search.c:
  assert.h and queues.h moved to ftdefs.h
myisam/ft_parser.c:
  ft_parse() with alloc
myisam/ft_static.c:
  api changes, ft_max_word_len_for_sort variable removed
myisam/ft_update.c:
  ft_parse() with alloc
myisam/ftdefs.h:
  variable ft_max_word_len_for_sort -> define FT_MAX_WORD_LEN_FOR_SORT
  api changes, ft_max_word_len_for_sort variable removed
  ft_parse() with alloc
myisam/mi_check.c:
  variable ft_max_word_len_for_sort -> define FT_MAX_WORD_LEN_FOR_SORT
myisam/myisamchk.c:
  ft_max_word_len_for_sort removed
mysql-test/r/fulltext.result:
  query expansion tests
mysql-test/r/fulltext_var.result:
  ft_max_word_len_for_sort removed
mysql-test/t/fulltext.test:
  query expansion tests
sql/ha_myisam.h:
  ft api changes for query expansion
sql/mysqld.cc:
  ft_max_word_len_for_sort removed
  ft_query_expansion_limit added
sql/set_var.cc:
  ft_max_word_len_for_sort removed
  ft_query_expansion_limit added
sql/sql_yacc.yy:
  EXPANSION added to keyword: rule

1 files changed, 6 insertions, 7 deletions

diff --git a/myisam/ft_static.c b/myisam/ft_static.c
index ca3054ae977..2edb86679e9 100644
--- a/myisam/ft_static.c
+++ b/myisam/ft_static.c
@@ -20,7 +20,7 @@
 
 ulong ft_min_word_len=4;
 ulong ft_max_word_len=HA_FT_MAXLEN;
-ulong ft_max_word_len_for_sort=20;
+ulong ft_query_expansion_limit=5;
 const char *ft_boolean_syntax="+ -><()~*:\"\"&|";
 
 const HA_KEYSEG ft_keysegs[FT_SEGS]={
@@ -53,14 +53,13 @@ const struct _ft_vft _ft_vft_boolean = {
   ft_boolean_get_relevance,  ft_boolean_reinit_search
 };
 
-FT_INFO *(*_ft_init_vft[2])(MI_INFO *, uint, byte *, uint, uint) =
-{ ft_init_nlq_search, ft_init_boolean_search };
-
 FT_INFO *ft_init_search(uint flags, void *info, uint keynr,
-                        byte *query, uint query_len)
+                        byte *query, uint query_len, byte *record)
 {
-  return (*_ft_init_vft[ flags&1 ])((MI_INFO *)info, keynr,
-          query, query_len, flags);
+  if (flags & FT_BOOL)
+    ft_init_boolean_search((MI_INFO *)info, keynr, query, query_len);
+  else
+    ft_init_nlq_search((MI_INFO *)info, keynr, query, query_len, flags, record);
 }
 
 const char *ft_stopword_file = 0;