expandFunctionOid()

static Oid expandFunctionOid ( Oid  geotype, Oid  callingfunc  )

static

Definition at line 278 of file gserialized_supportfn.c.

{
        const Oid radiustype = FLOAT8OID; /* Should always be FLOAT8OID */
        const Oid expandfn_args[2] = {geotype, radiustype};
        const bool noError = true;
        /* Expand function must be in same namespace as the caller */
        char *nspname = get_namespace_name(get_func_namespace(callingfunc));
        List *expandfn_name = list_make2(makeString(nspname), makeString("st_expand"));
        Oid expandfn_oid = LookupFuncName(expandfn_name, 2, expandfn_args, noError);
        if (expandfn_oid == InvalidOid)
        {
                /*
                * This is ugly, but we first lookup the geometry variant of expand
                * and if we fail, we look up the geography variant. The alternative
                * is re-naming the geography variant to match the geometry
                * one, which would not be the end of the world.
                */
                expandfn_name = list_make2(makeString(nspname), makeString("_st_expand"));
                expandfn_oid = LookupFuncName(expandfn_name, 2, expandfn_args, noError);
                if (expandfn_oid == InvalidOid)
                        elog(ERROR, "%s: unable to lookup 'st_expand(Oid[%u], Oid[%u])'", __func__, geotype, radiustype);
        }
        return expandfn_oid;
}

Referenced by postgis_index_supportfn().

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