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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2008-05-16 16:31:02 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2008-05-16 16:31:02 +0000 |
| commit | e6dbcb72fafa4031c73cc914e829a6dec96ab6b6 (patch) | |
| tree | 6a7a3c22d0a127a27aed46c0f8d42b8455476d56 /src/backend/utils/adt/tsgistidx.c | |
| parent | e1bdd07c3c33d4004180506f1493efcbbbc02b4c (diff) | |
| download | postgresql-e6dbcb72fafa4031c73cc914e829a6dec96ab6b6.tar.gz postgresql-e6dbcb72fafa4031c73cc914e829a6dec96ab6b6.zip | |
Extend GIN to support partial-match searches, and extend tsquery to support
prefix matching using this facility.
Teodor Sigaev and Oleg Bartunov
Diffstat (limited to 'src/backend/utils/adt/tsgistidx.c')
| -rw-r--r-- | src/backend/utils/adt/tsgistidx.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/src/backend/utils/adt/tsgistidx.c b/src/backend/utils/adt/tsgistidx.c index ecbac7b40f2..b18f7131545 100644 --- a/src/backend/utils/adt/tsgistidx.c +++ b/src/backend/utils/adt/tsgistidx.c @@ -7,7 +7,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/utils/adt/tsgistidx.c,v 1.8 2008/04/14 17:05:33 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/utils/adt/tsgistidx.c,v 1.9 2008/05/16 16:31:01 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -307,6 +307,12 @@ checkcondition_arr(void *checkval, QueryOperand *val) /* Loop invariant: StopLow <= val < StopHigh */ + /* + * we are not able to find a a prefix by hash value + */ + if ( val->prefix ) + return true; + while (StopLow < StopHigh) { StopMiddle = StopLow + (StopHigh - StopLow) / 2; @@ -324,6 +330,11 @@ checkcondition_arr(void *checkval, QueryOperand *val) static bool checkcondition_bit(void *checkval, QueryOperand *val) { + /* + * we are not able to find a a prefix in signature tree + */ + if ( val->prefix ) + return true; return GETBIT(checkval, HASHVAL(val->valcrc)); } |