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| author | Teodor Sigaev <teodor@sigaev.ru> | 2005-01-25 15:24:38 +0000 |
|---|---|---|
| committer | Teodor Sigaev <teodor@sigaev.ru> | 2005-01-25 15:24:38 +0000 |
| commit | 324300bc7ccba6988f16915468ee2b870ef3ae5f (patch) | |
| tree | 0922e10a1c417c5bff0100730281ad22add28860 /contrib/tsearch2/dict_syn.c | |
| parent | d314616d128ba692aec434bd376bc40886f98f7b (diff) | |
| download | postgresql-324300bc7ccba6988f16915468ee2b870ef3ae5f.tar.gz | |
improve support of agglutinative languages (query with compound words).
regression=# select to_tsquery( '\'fotballklubber\'');
to_tsquery
------------------------------------------------
'fotball' & 'klubb' | 'fot' & 'ball' & 'klubb'
(1 row)
So, changed interface to dictionaries, lexize method of dictionary shoud return
pointer to aray of TSLexeme structs instead of char**. Last element should
have TSLexeme->lexeme == NULL.
typedef struct {
/* number of variant of split word , for example
Word 'fotballklubber' (norwegian) has two varian to split:
( fotball, klubb ) and ( fot, ball, klubb ). So, dictionary
should return:
nvariant lexeme
1 fotball
1 klubb
2 fot
2 ball
2 klubb
*/
uint16 nvariant;
/* currently unused */
uint16 flags;
/* C-string */
char *lexeme;
} TSLexeme;
Diffstat (limited to 'contrib/tsearch2/dict_syn.c')
| -rw-r--r-- | contrib/tsearch2/dict_syn.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/contrib/tsearch2/dict_syn.c b/contrib/tsearch2/dict_syn.c index 046a594903..6e3ed86434 100644 --- a/contrib/tsearch2/dict_syn.c +++ b/contrib/tsearch2/dict_syn.c @@ -162,7 +162,7 @@ syn_lexize(PG_FUNCTION_ARGS) char *in = (char *) PG_GETARG_POINTER(1); Syn key, *found; - char **res = NULL; + TSLexeme *res = NULL; if (!PG_GETARG_INT32(2)) PG_RETURN_POINTER(NULL); @@ -176,10 +176,9 @@ syn_lexize(PG_FUNCTION_ARGS) if (!found) PG_RETURN_POINTER(NULL); - res = palloc(sizeof(char *) * 2); - - res[0] = pstrdup(found->out); - res[1] = NULL; + res = palloc(sizeof(TSLexeme) * 2); + memset(res,0,sizeof(TSLexeme) * 2); + res[0].lexeme = pstrdup(found->out); PG_RETURN_POINTER(res); } |