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Extend GIN to support partial-match searches, and extend tsquery to support

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prefix matching using this facility.

Teodor Sigaev and Oleg Bartunov
This commit is contained in:
Tom Lane
2008-05-16 16:31:02 +00:00
parent e1bdd07c3c
commit e6dbcb72fa
32 changed files with 1284 additions and 508 deletions
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13
src/backend/utils/adt/tsgistidx.c
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@ -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));
}