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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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18
src/backend/access/gin/ginutil.c
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@ -8,7 +8,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/access/gin/ginutil.c,v 1.14 2008/05/12 00:00:44 alvherre Exp $
* $PostgreSQL: pgsql/src/backend/access/gin/ginutil.c,v 1.15 2008/05/16 16:31:01 tgl Exp $
*-------------------------------------------------------------------------
*/
@ -41,6 +41,22 @@ initGinState(GinState *state, Relation index)
fmgr_info_copy(&(state->consistentFn),
index_getprocinfo(index, 1, GIN_CONSISTENT_PROC),
CurrentMemoryContext);
/*
* Check opclass capability to do partial match.
*/
if ( index_getprocid(index, 1, GIN_COMPARE_PARTIAL_PROC) != InvalidOid )
{
fmgr_info_copy(&(state->comparePartialFn),
index_getprocinfo(index, 1, GIN_COMPARE_PARTIAL_PROC),
CurrentMemoryContext);
state->canPartialMatch = true;
}
else
{
state->canPartialMatch = false;
}
}
/*