Mailing-List: contact user-help@couchdb.apache.org; run by ezmlm
Precedence: bulk
Reply-To: user@couchdb.apache.org
Received-SPF: pass (nike.apache.org: local policy includes SPF record at
 spf.trusted-forwarder.org)
DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws;
  s=s1024; d=sbcglobal.net;
  h=X-YMail-OSG:Received:X-Rocket-MIMEInfo:X-Mailer:References:Message-ID:Date:From:Reply-To:Subject:To:In-Reply-To:MIME-Version:Content-Type;
  b=CmfWtd00NzUfIcrF7tIOr2/8QTb0tKQz+A0Hsts1UE7tS/kpIN9DQFSVf2txtr0886JAh0qk6/ZHuHRI3HRND+nI2zPXR48Llrgp9B62bcSbSIc111nNb/3h8NdkUxVjCw9CKmVKj29XEDn3Ween4uREKU68IqVmXJpiYaiX9dc=;
References: <1391475913.38078.YahooMailNeo@web181704.mail.ne1.yahoo.com>
 <CAHdjipJpkm-9F8RjgZKVEp2y_hJ0MD2anGu11jdFSKpYyHh+Hw@mail.gmail.com>
Message-ID: <1391481174.85704.YahooMailNeo@web181705.mail.ne1.yahoo.com>
Date: Mon, 3 Feb 2014 18:32:54 -0800 (PST)
From: Scott Weber <scotty2541@sbcglobal.net>
Reply-To: Scott Weber <scotty2541@sbcglobal.net>
Subject: Re: SERVER ERROR on a filter.
To: "user@couchdb.apache.org" <user@couchdb.apache.org>
In-Reply-To: 
 <CAHdjipJpkm-9F8RjgZKVEp2y_hJ0MD2anGu11jdFSKpYyHh+Hw@mail.gmail.com>
MIME-Version: 1.0
Content-Type: multipart/alternative;
 boundary="-237291172-524402489-1391481174=:85704"

---237291172-524402489-1391481174=:85704
Content-Type: text/plain; charset=iso-8859-1
Content-Transfer-Encoding: quoted-printable

Oh.=A0 Makes sense.=A0 Didn't think that it would process it's own document=
.=0A=0AThanks!=0A=0A=0A=0A=0A________________________________=0A From: Alex=
ander Shorin <kxepal@gmail.com>=0ATo: "user@couchdb.apache.org" <user@couch=
db.apache.org> =0ASent: Monday, February 3, 2014 8:29 PM=0ASubject: Re: SER=
VER ERROR on a filter.=0A =0A=0AFilter functions are processing all documen=
ts, including design one.=0AThis error was raised exactly for it since it h=
as no field flds and=0Aaccessing by index for undefined value raises an err=
or. You should add=0Aadditional check to you filter to lookup doc.flds[1] v=
alue for those=0Adocuments that hasn't it - LBYL[1] is a good practice to f=
ollow to=0Aavoid unexpectable errors.=0A=0A[1]: LBYL - Look before you leap=
. This coding style explicitly tests=0Afor pre-conditions before making cal=
ls or lookups.=0A--=0A,,,^..^,,,=0A=0A=0AOn Tue, Feb 4, 2014 at 5:05 AM, Sc=
ott Weber <scotty2541@sbcglobal.net> wrote:=0A> I am now working with filte=
rs.=A0 I have created a small handful of docs.=A0 Each one consists of an a=
rray of fields.=A0 A sample of one is below:=0A>=0A> {=A0 "_id": "101", "_r=
ev": "1-b3303229104420834b1cf8fd22a75676", "name": "101", "flds": [ "10", "=
11", "aa", "bb" ] }=0A>=0A> And here is the filter function I am using (in =
a design called "lookup"):=0A> "filters": { "getdoc": "function(doc, req) {=
=0A> log(doc.flds[1]);=0A> return true;}" }=0A>=0A> I get the correct respo=
nse for the URL: http://localhost:5984/db/_changes?filter=3D/lookup/getdoc,=
 with a code of 200.=0A> And the function *does* log "doc.flds[1]" as expec=
ted.=0A>=0A> Then the log shows a server error 500, reporting that "doc.fld=
s" in undefined.=A0 All occurring within one HTTP request.=0A>=0A> The full=
 log of the error is below (complete with line wrapping).=A0 Is something b=
roken?=A0 Or am I doing something incorrect?=0A>=0A> Thanks for any advice.=
=0A>=0A> -Scott=0A>=0A> [info] [<0.2067.0>] 127.0.0.1 - - GET /db/_changes?=
filter=3D/lookup/getdoc 200=0A> [info] [<0.200.0>] OS Process #Port<0.5107>=
 Log :: 11=0A> [info] [<0.200.0>] OS Process #Port<0.5107> Log :: 12=0A> [i=
nfo] [<0.200.0>] OS Process #Port<0.5107> Log :: 13=0A> [info] [<0.200.0>] =
OS Process #Port<0.5107> Log :: 14=0A> [info] [<0.200.0>] OS Process #Port<=
0.5107> Log :: 15=0A> [info] [<0.200.0>] OS Process #Port<0.5107> Log :: 16=
=0A> [info] [<0.200.0>] OS Process #Port<0.5107> Log :: 17=0A> [error] [<0.=
2067.0>] OS Process Error <0.200.0> :: {<<"TypeError">>,=0A> {[{<<"message"=
>>,=0A> <<"doc.flds is undefined">>},=0A> {<<"fileName">>,=0A> <<"filters.g=
etdoc">>},=0A> {<<"lineNumber">>,1},=0A> {<<"stack">>,=0A> <<"([object Obje=
ct],[object Object])@filters.getdoc:1\n(function (doc, req) {log(doc.flds[1=
]);return true;},[object Object],[object Array])@../share/couchdb/server/ma=
in.js:510\n(\"_design/lookup\",[object Array],[object Array])@../share/couc=
hdb/server/main.js:1517\n()@../share/couchdb/server/main.js:1562\n@../share=
/couchdb/server/main.js:1573\n">>}]}}=0A> [info] [<0.2067.0>] 127.0.0.1 - -=
 GET /db/_changes?filter=3D/lookup/getdoc 500=0A> [error] [<0.2067.0>] http=
d 500 error response:=0A> {"error":"TypeError","reason":"{[{<<\"message\">>=
,<<\"doc.flds is undefined\">>},\n=A0 {<<\"fileName\">>,<<\"filters.getdoc\=
">>},\n=A0 {<<\"lineNumber\">>,1},\n=A0 {<<\"stack\">>,\n=A0  <<\"([object =
Object],[object Object])@filters.getdoc:1\\n(function (doc, req) {log(doc.f=
lds[1]);return true;},[object Object],[object Array])@../share/couchdb/serv=
er/main.js:510\\n(\\\"_design/lookup\\\",[object Array],[object Array])@../=
share/couchdb/server/main.js:1517\\n()@../share/couchdb/server/main.js:1562=
\\n@../share/couchdb/server/main.js:1573\\n\">>}]}"}
---237291172-524402489-1391481174=:85704--