[jira] [Commented] (COUCHDB-1372) _stats reduce producing errors on empty views

[paul iannazzo (Commented) (JIRA)]

[ 
https://issues.apache.org/jira/browse/COUCHDB-1372?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=13177800#comment-13177800
 ] 

paul iannazzo commented on COUCHDB-1372:


this causes my couchapps to crash.

 _stats reduce producing errors on empty views
 ---

 Key: COUCHDB-1372
 URL: https://issues.apache.org/jira/browse/COUCHDB-1372
 Project: CouchDB
  Issue Type: Bug
  Components: JavaScript View Server
Affects Versions: 1.1.1
 Environment: windows, most likely effects all systems
Reporter: paul iannazzo
Assignee: Robert Newson
   Original Estimate: 24h
  Remaining Estimate: 24h

 have a database with any number of documents in it. create a map that outputs 
 0 things (no emits called). use reduce : _stats. an error should occur.
 it's very common to have views be an empty set since maps act as filters in 
 couchdb.
 when i use my own reduce functions i don't get errors, only with the standard 
 couchdb functions.
 this wouldn't be a problem if i could use commonJS in my reduces.

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[jira] [Commented] (COUCHDB-1300) Array.prototype isn't working properly

[paul iannazzo (Commented) (JIRA)]

[ 
https://issues.apache.org/jira/browse/COUCHDB-1300?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=13118941#comment-13118941
 ] 

paul iannazzo commented on COUCHDB-1300:


I found a workaround (i guess solution in this case) to my problem.
instead of using array prototypes i can get the same functionality via monads 
(specifically the underscore library).

anyway, i found this issue very confusing.

thank you for your quick response.

 Array.prototype isn't working properly
 --

 Key: COUCHDB-1300
 URL: https://issues.apache.org/jira/browse/COUCHDB-1300
 Project: CouchDB
  Issue Type: Bug
  Components: JavaScript View Server
Affects Versions: 1.1
 Environment: Ubuntu 11.04, node.couchapp, commonJS
Reporter: paul iannazzo
  Labels: javascript, patch

 ##file helpers.js in views/lib/common
 const _ = require(views/lib/underscore);
 Array.prototype.compact = function(){return _.compact(this);};
 Array.prototype.flatten = function(){return _.flatten(this);};
 //this function is called from views.someName.map
 function commonProperties(doc){
 arr = [];
 arr = arr.compact();
 log(arr);
 log(is array?);
 log(toString.call(doc.store.taxes));
 log(doc.store.taxes);
 //log(doc.store.taxes.compact());
 log(is safe array?);
 log(toString.call(safe.array(doc.store.taxes)));
 log(safe.array(doc.store.taxes));
//log(safe.array(doc.store.taxes).compact());
 log(array?);
 log(toString.call(Array(safe.array(doc.store.taxes;
 log(Array(doc.store.taxes));
 log(Array(doc.store.taxes).compact());
 ...
 ::LOG
 [info] [0.3429.0] OS Process #Port0.5316 Log :: []
 [info] [0.3429.0] OS Process #Port0.5316 Log :: is array?
 [info] [0.3429.0] OS Process #Port0.5316 Log :: [object Array]
 [info] [0.3429.0] OS Process #Port0.5316 Log :: 
 [{taxId:0,number:00,percent:8},{taxId:1,number:,percent:5},{taxId:2,number:,percent:1}]
 [info] [0.3429.0] OS Process #Port0.5316 Log :: is safe array?
 [info] [0.3429.0] OS Process #Port0.5316 Log :: [object Array]
 [info] [0.3429.0] OS Process #Port0.5316 Log :: 
 [{taxId:0,number:00,percent:8},{taxId:1,number:,percent:5},{taxId:2,number:,percent:1}]
 [info] [0.3429.0] OS Process #Port0.5316 Log :: array?
 [info] [0.3429.0] OS Process #Port0.5316 Log :: [object Array]
 [info] [0.3429.0] OS Process #Port0.5316 Log :: 
 [[{taxId:0,number:00,percent:8},{taxId:1,number:,percent:5},{taxId:2,number:,percent:1}]]
 the .compact() lines that are commented out cause errors:
 [info] [0.3429.0] OS Process #Port0.5316 Log :: []
 [info] [0.3429.0] OS Process #Port0.5316 Log :: is array?
 [info] [0.3429.0] OS Process #Port0.5316 Log :: [object Array]
 [info] [0.3429.0] OS Process #Port0.5316 Log :: 
 [{taxId:0,number:00,percent:8},{taxId:1,number:,percent:5},{taxId:2,number:,percent:1}]
 [info] [0.3429.0] OS Process #Port0.5316 Log :: function raised exception 
 (new TypeError(doc.store.taxes.compact is not a function, , 29)) with 
 doc._id RT7-RT7-31-20
 the first logs show that doc.store.taxes is an array, why do i need to use 
 Array() on it in order to use the prototype functions?

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