diff options
Diffstat (limited to 'contrib/tsearch2/gistidx.c')
| -rw-r--r-- | contrib/tsearch2/gistidx.c | 27 |
1 files changed, 23 insertions, 4 deletions
diff --git a/contrib/tsearch2/gistidx.c b/contrib/tsearch2/gistidx.c index bf1705036e4..58fbb974512 100644 --- a/contrib/tsearch2/gistidx.c +++ b/contrib/tsearch2/gistidx.c @@ -54,6 +54,7 @@ Datum gtsvector_picksplit(PG_FUNCTION_ARGS); GETBITBYTE(val,7) \ ) +static int4 sizebitvec(BITVECP sign); Datum gtsvector_in(PG_FUNCTION_ARGS) @@ -64,13 +65,31 @@ gtsvector_in(PG_FUNCTION_ARGS) PG_RETURN_DATUM(0); } +#define SINGOUTSTR "%d true bits, %d false bits" +#define ARROUTSTR "%d unique words" +#define EXTRALEN ( 2*13 ) + +static int outbuf_maxlen = 0; + Datum gtsvector_out(PG_FUNCTION_ARGS) { - ereport(ERROR, - (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), - errmsg("gtsvector_out not implemented"))); - PG_RETURN_DATUM(0); + GISTTYPE *key = (GISTTYPE *) DatumGetPointer(PG_DETOAST_DATUM(PG_GETARG_POINTER(0))); + char *outbuf; + + if ( outbuf_maxlen==0 ) + outbuf_maxlen = 2*EXTRALEN + Max( strlen(SINGOUTSTR), strlen(ARROUTSTR) ) + 1; + outbuf = palloc( outbuf_maxlen ); + + if ( ISARRKEY(key) ) + sprintf( outbuf, ARROUTSTR, ARRNELEM(key) ); + else { + int cnttrue = ( ISALLTRUE(key) ) ? SIGLENBIT : sizebitvec(GETSIGN(key)); + sprintf( outbuf, SINGOUTSTR, cnttrue, SIGLENBIT - cnttrue ); + } + + PG_FREE_IF_COPY(key,0); + PG_RETURN_POINTER(outbuf); } static int |