Обсуждение: cant execute yyparse() within postgresql
hello
i am not able to execute the yyparse() function
generated by flex from within the pl call handler
function.
does any one knows the reason for this failure? and
how can it be rectified
thank you
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Sibtay Abbas wrote: > i am not able to execute the yyparse() function > generated by flex from within the pl call handler > function. First of all, flex does not generate a yyparse() function. At most it generates yylex(). Second, you can't just ask random, highly specific questions out of the blue and expect someone to have an answer for you. Why are you calling yyparser(), what happens when you do, what PL handlers are you talking about, etc., would be some of the required context information. -- Peter Eisentraut http://developer.postgresql.org/~petere/
i am sorry if i hurt your ego, by asking this question. And i mentioned flex mistakenly...actually by flex i meant yacc (i am using lex & yacc). yyparse is generated by yacc..which i want to invoke. " >Second, you can't just ask > random, highly specific > questions out of the blue and expect someone to >have > an answer for you. " i never happen to read this rule when i signed up to this mailing list...so if you ve made up a rule by urself for this mailing list just do us a favor by officially announcing it i think anyone who has knowledge of adding new languages to postgresql will understand what pl call handler means. i ve been getting alot of help from this mailing list and i thank all the ppl who helped me. Peter's attitude was rude and i complain against it and i ask the mailing list maintainers to follow up on this. Peter if you dont understand someone's question the nice way is to ask him the details instead of trying to insult him. thank you --- Peter Eisentraut <peter_e@gmx.net> wrote: > Sibtay Abbas wrote: > > i am not able to execute the yyparse() function > > generated by flex from within the pl call handler > > function. > > First of all, flex does not generate a yyparse() > function. At most it > generates yylex(). Second, you can't just ask > random, highly specific > questions out of the blue and expect someone to have > an answer for you. > Why are you calling yyparser(), what happens when > you do, what PL > handlers are you talking about, etc., would be some > of the required > context information. > > -- > Peter Eisentraut > http://developer.postgresql.org/~petere/ > __________________________________ Do you Yahoo!? Take Yahoo! Mail with you! Get it on your mobile phone. http://mobile.yahoo.com/maildemo
On Tue, 21 Dec 2004 10:50:25 -0800 (PST) Sibtay Abbas <sibtay_abbas@yahoo.com> wrote: > i never happen to read this rule when i signed up to > this mailing list...so if you ve made up a rule by > urself for this mailing list just do us a favor by > officially announcing it > > i think anyone who has knowledge of adding new > languages to postgresql will understand what pl call > handler means. > > i ve been getting alot of help from this mailing list > and i thank all the ppl who helped me. > > Peter's attitude was rude and i complain against it > and i ask the mailing list maintainers to follow up on > this. I don't believe Peter was trying to be rude. And while it isn't a "rule" per se, the more information you can provide ina question the more you increase your chances of someone having an answer for you. Something along the lines of "I'm trying to add a new language to postgresql and I need to be able to X from within Y" etc,etc, etc. will go a lot futher than "I can't X from within Y". --------------------------------- Frank Wiles <frank@wiles.org> http://www.wiles.org---------------------------------
Sibtay Abbas <sibtay_abbas@yahoo.com> writes:
> Peter's attitude was rude and i complain against it
> and i ask the mailing list maintainers to follow up on
> this.
You would do better to take his advice and provide the needed context.
Personally I had ignored your first message as unanswerable...
regards, tom lane
Datum mylanguage_handler(PG_FUNCTION_ARGS){
if (CALLED_AS_TRIGGER(fcinfo))/*do nothing else{ char *proc_source;Datum prosrcdatum;bool
isnull; //get the oid of the functionOid funcOid = fcinfo->flinfo->fn_oid; HeapTuple procTup =
SearchSysCache(PROCOID,ObjectIdGetDatum(funcOid),0, 0,
0);
//get the attribute that holds the function's source
prosrcdatum = SysCacheGetAttr(PROCOID,
procTup,Anum_pg_proc_prosrc, &isnull);
//convert prosrcdatum to C style string
proc_source =
DatumGetCString(DirectFunctionCall1(textout,
prosrcdatum)); if (isnull) elog(ERROR, "null prosrc");else{ elog(INFO,"\n Invoking parser \n");
/*the problem area*/ yyparse(); elog(INFO,"\n parser invoked \n");}
}//end of function
i receive the following error
"server closed the connection unexpectedly This probably means the server terminated
abnormally before or while processing the request.
The connection to the server was lost. Attempting
reset: Failed."
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Sibtay Abbas wrote: > i never happen to read this rule when i signed up to > this mailing list...so if you ve made up a rule by > urself for this mailing list just do us a favor by > officially announcing it > Got a question ...? http://www.catb.org/~esr/faqs/smart-questions.html Andre