node.js - Couch DB use regex to search body -


i pretty new couchdb, map/reduce , nosql in general.

i hoping if guys guide me on how implement basic search on node.js/ couchdb application.

i looking @ searching text elements within couchdb documents.

most of documents within couch of similar format mentioned below : 

{     "_id": "b001729a2c5cf4100ea50a71ec04e20b",     "_rev": "1-8928ea122d80fd5c1da1c22dfc6ce46e",     "approved publish": "false",     "article body": "has retained carbon trust standard energy , carbon management.following demanding audit process took place in december 2012, awarded recertification carbon trust standard.this certificate mark of excellence in recognition of how measure, manage , reduce our carbon emissions.",     "headline": "delight retains carbon trust standard" }

my search keys eg 'carbon trust', 'emissions', 'excellence recognition' etc.

what have temporary map function use in request body of node.js application in post request, sure not right approach, , expect stored view in couchdb.

my map function:

function (doc) {     if ('headline' in doc) {         if (doc['article body'].search(/" + req.body.jsonvalue  + "/i) !== -1             || doc.headline.search(/" + req.body.jsonvalue + "/i) !== -1) {             var key = doc.headline,                 value = doc;             emit(key, value);         }     } }

please let me know on need improve approach or let me know if things unclear.

regards

a list function has access querystring values, can add 1 use in conjunction view.

map function

function (doc) {     if ("headline" in doc) {         emit(doc.headline, doc);     } }

list function

function (head, req) {     var rows = [],         regex = new regexp(req.query.search, "i"), // use querystring param create regexp object         row;      while (row = getrow()) {         if (row.value.headline.search(regex) > -1 || row.value["article body"].search(regex)) {             rows.push(row);         }     }      // i'm mocking view's output (not required)     send(json.stringify({         total_rows: rows.length,         offset: 0,         rows: rows     })); }

of course modify list function emit data in chunks, rather @ once, should give idea of solution looks like.


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