Datum
ts_rankcd_tt(PG_FUNCTION_ARGS)
{
TSVector txt = PG_GETARG_TSVECTOR(0);
TSQuery query = PG_GETARG_TSQUERY(1);
float res;
res = calc_rank_cd(getWeights(NULL), txt, query, DEF_NORM_METHOD);
PG_FREE_IF_COPY(txt, 0);
PG_FREE_IF_COPY(query, 1);
PG_RETURN_FLOAT4(res);
}
Datum
rank_cd(PG_FUNCTION_ARGS)
{
ArrayType *win;
tsvector *txt = (tsvector *) PG_DETOAST_DATUM(PG_GETARG_DATUM(1));
QUERYTYPE *query = (QUERYTYPE *) PG_DETOAST_DATUM_COPY(PG_GETARG_DATUM(2));
int method = DEF_NORM_METHOD;
float4 res;
/*
* Pre-8.2, rank_cd took just a plain int as its first argument.
* It was a mistake to keep the same C function name while changing the
* signature, but it's too late to fix that. Instead, do a runtime test
* to make sure the expected datatype has been passed. This is needed
* to prevent core dumps if tsearch2 function definitions from an old
* database are loaded into an 8.2 server.
*/
if (get_fn_expr_argtype(fcinfo->flinfo, 0) != FLOAT4ARRAYOID)
ereport(ERROR,
(errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
errmsg("rank_cd() now takes real[] as its first argument, not integer")));
/* now safe to dereference the first arg */
win = (ArrayType *) PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
if (ARR_NDIM(win) != 1)
ereport(ERROR,
(errcode(ERRCODE_ARRAY_SUBSCRIPT_ERROR),
errmsg("array of weight must be one-dimensional")));
if (ARRNELEMS(win) < lengthof(weights))
ereport(ERROR,
(errcode(ERRCODE_ARRAY_SUBSCRIPT_ERROR),
errmsg("array of weight is too short")));
if (ARR_HASNULL(win))
ereport(ERROR,
(errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED),
errmsg("array of weight must not contain nulls")));
if (PG_NARGS() == 4)
method = PG_GETARG_INT32(3);
res = calc_rank_cd((float4 *) ARR_DATA_PTR(win), txt, query, method);
PG_FREE_IF_COPY(win, 0);
PG_FREE_IF_COPY(txt, 1);
PG_FREE_IF_COPY(query, 2);
PG_RETURN_FLOAT4(res);
}
Datum
rank_cd_def(PG_FUNCTION_ARGS)
{
tsvector *txt = (tsvector *) PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
QUERYTYPE *query = (QUERYTYPE *) PG_DETOAST_DATUM_COPY(PG_GETARG_DATUM(1));
float4 res;
res = calc_rank_cd(weights, txt, query, (PG_NARGS() == 3) ? PG_GETARG_DATUM(2) : DEF_NORM_METHOD);
PG_FREE_IF_COPY(txt, 0);
PG_FREE_IF_COPY(query, 1);
PG_RETURN_FLOAT4(res);
}
Datum
ts_rankcd_ttf(PG_FUNCTION_ARGS)
{
TSVector txt = PG_GETARG_TSVECTOR(0);
TSQuery query = PG_GETARG_TSQUERY(1);
int method = PG_GETARG_INT32(2);
float res;
res = calc_rank_cd(getWeights(NULL), txt, query, method);
PG_FREE_IF_COPY(txt, 0);
PG_FREE_IF_COPY(query, 1);
PG_RETURN_FLOAT4(res);
}
Datum
ts_rankcd_wtt(PG_FUNCTION_ARGS)
{
ArrayType *win = (ArrayType *) PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
TSVector txt = PG_GETARG_TSVECTOR(1);
TSQuery query = PG_GETARG_TSQUERY(2);
float res;
res = calc_rank_cd(getWeights(win), txt, query, DEF_NORM_METHOD);
PG_FREE_IF_COPY(win, 0);
PG_FREE_IF_COPY(txt, 1);
PG_FREE_IF_COPY(query, 2);
PG_RETURN_FLOAT4(res);
}
