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  • Using couchdb authentication by xmpp users

    - by flossy
    Hi, I'd like use couchdb for a web application with external user authentication by a XMPP-Server (Openfire). How can I achieve that? Let's say we have thre users: [email protected] [email protected] [email protected] Now [email protected] should be able to read all documents that are suited for basic users. [email protected] should be able to read AND write all documents that are suited for basic users. [email protected] should be able to read all documents that are suited for basic and advanced users. Is that possible?

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  • Best Practice for CouchDB Document Versioning

    - by Groundwater
    Following my question here I am exmploring ideas for a generic approach to document versioning in CouchDB. While I imagine there may be no canonical approach, I had the following idea and am looking for feedback. I would like to maintain readable document ids as much as possible, so a document existing at /document1 would contain a pointer document to all existing versions on the system. The actual revision documents would be at something like /document1/308ef032a3801a where 308ef032a3801a is some random number or hash. Example The pointer document { "_id" : "document1", "versions" : [ "document1/308ef032a3801a" ] } The version document { "_id" : "document1/308ef032a3801a", ... actual content }

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  • Are MongoDB and CouchDB perfect substitutes?

    - by raoulsson
    I haven't got my hands dirty yet with neither CouchDB nor MongoDB but I would like to do so soon... I also have read a bit about both systems and it looks to me like they cover the same cases... Or am I missing a key distinguishing feature? I would like to use a document based storage instead of a traditional RDBMS in my next project. I also need the datastore to handle large binary objects (images and videos) automatically replicate itself to physically separate nodes rendering the need of an additional RDBMS superfluous Are both equally well suited for these requirements? Thanks!

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  • Change notification in CouchDB when a field is set

    - by PartlyCloudy
    Hi, I'm trying to get notifications in a CouchDB change poll as soon as pre-defined field is set or changed. I've already had a look at filters that can be used for filtering change events(db/_changes?filter=myfilter). However, I've not yet found a way to include this temporal information, because you can only get the current version of the document in this filter functions. Is there any possibility to create such a filter? If it does not work, I could export my field to a separate database and the only poll for changes in that db, but I'd prefer to keep together my data for obvious reasons. Thanks in advance!

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  • How do I DRY up my CouchDB views?

    - by James A. Rosen
    What can I do to share code among views in CouchDB? Example 1 -- utility methods Jesse Hallett has some good utility methods, including function dot(attr) { return function(obj) { return obj[attr]; } } Array.prototype.map = function(func) { var i, r = [], for (i = 0; i < this.length; i += 1) { r[i] = func(this[i]); } return r; }; ... Where can I put this code so every view can access it? Example 2 -- constants Similarly for constants I use in my application. Where do I put MyApp = { A_CONSTANT = "..."; ANOTHER_CONSTANT = "..."; }; Example 3 -- filter of a filter: What if I want a one view that filters by "is this a rich person?": function(doc) { if (doc.type == 'person' && doc.net_worth > 1000000) { emit(doc.id, doc); } } and another that indexes by last name: function(doc) { if (doc.last_name) { emit(doc.last_name, doc); } } How can I combine them into a "rich people by last name" view? I sort of want the equivalent of the Ruby my_array.select { |x| x.person? }.select { |x| x.net_worth > 1,000,000 }.map { |x| [x.last_name, x] } How can I be DRYer?

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  • Help me build a CouchDB mapreduce

    - by mit
    There are CouchDB documents that are list elements: { "type" : "el", "id" : "1", "content" : "first" } { "type" : "el", "id" : "2", "content" : "second" } { "type" : "el", "id" : "3", "content" : "third" } There is one document that defines the list: { "type" : "list", "elements" : ["2","1"] , "id" : "abc123" } As you can see the third element was deleted, it is no longer part of the list. So it must not be part of the result. Now I want a view that returns the content elements including the right order. The result could be: { "content" : ["second", "first"] } In this case the order of the elements is already as it should be. Another possible result: { "content" : [{"content" : "first", "order" : 2},{"content" : "second", "order" : 1}] } I started writing the map function: map = function (doc) { if (doc.type === 'el') { emit(doc.id, {"content" : doc.content}); //emit the id and the content exit; } if (doc.type === 'list') { for ( var i=0, l=doc.elements.length; i<l; ++i ){ emit(doc.elements[i], { "order" : i }); //emit the id and the order } } } This is as far as I can get. Can you correct my mistakes and write a reduce function? Remember that the third document must not be part of the result.

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  • Best way to do one-to-many "JOIN" in CouchDB

    - by mit
    There are CouchDB documents that are list elements: { "type" : "el", "id" : "1", "content" : "first" } { "type" : "el", "id" : "2", "content" : "second" } { "type" : "el", "id" : "3", "content" : "third" } There is one document that defines the list: { "type" : "list", "elements" : ["2","1"] , "id" : "abc123" } As you can see the third element was deleted, it is no longer part of the list. So it must not be part of the result. Now I want a view that returns the content elements including the right order. The result could be: { "content" : ["second", "first"] } In this case the order of the elements is already as it should be. Another possible result: { "content" : [{"content" : "first", "order" : 2},{"content" : "second", "order" : 1}] } I started writing the map function: map = function (doc) { if (doc.type === 'el') { emit(doc.id, {"content" : doc.content}); //emit the id and the content exit; } if (doc.type === 'list') { for ( var i=0, l=doc.elements.length; i<l; ++i ){ emit(doc.elements[i], { "order" : i }); //emit the id and the order } } } This is as far as I can get. Can you correct my mistakes and write a reduce function? Remember that the third document must not be part of the result. Of course you can write a different map function also. But the structure of the documents (one definig element document and an entry document for each entry) cannot be changed.

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  • CouchDB- basic grouping question

    - by dnolen
    I have a user document which has a group field. This field is an array of group ids. I would like to write a view that returns (groupid as key) - (array of user docs as val). This mapping operation seems like a good beginning. function(doc) { var type = doc.type; var groups = doc.groups; if(type == "user" && groups.length > 0) { for(var i = 0; i < groups.length; i++) { emit(groups[i], doc); } } } But there's obviously something very wrong with my attempt at a reduce: function(key, values, rereduce) { var set = []; var seen = []; for(var i = 0; i < values.length; i++) { var _id = values[i]._id; if(seen.indexOf(_id) == -1) { seen.push(_id); set.push(values[i]); } } return set; } I'm running CouchDB 0.10dev. Any help appreciated.

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  • Lucene multiple indexes : Normalize document scores??

    - by Roey
    Hi All. Suppose I've got multiple lucene indexes (not replicas) on several PC's. I query each index and then merge the results. Is there any way to normalize the document scores so that I could sort by score (relevance)? I mean, the scores for document A from index A would not be comparable with document B from index B, unless I do some sort of normalization.... not so? Thanks Roey

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  • how to perform proper indexing and searching in Lucene.Net

    - by Ashish
    Dear All, I have a list of all words in the document. I want to index it and latter I want to retrieve a particular word and some near by words (10 words before the result and 10 words after the result). What is the proper way of indexing and searching in Lucene.net? Please reply me as soon as possible. Thanking you, Ashish

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  • How to change default conjunction with Lucene MultiFieldQueryParser

    - by Luke H
    I have some code using Lucene that leaves the default conjunction operator as OR, and I want to change it to AND. Some of the code just uses a plain QueryParser, and that's fine - I can just call setDefaultOperator on those instances. Unfortunately, in one place the code uses a MultiFieldQueryParser, and calls the static "parse" method (taking String, String[], BooleanClause.Occur[], Analyzer), so it seems that setDefaultOperator can't help, because it's an instance method. Is there a way to keep using the same parser but have the default conjunction changed?

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  • Zend Lucene - cannot search numbers

    - by Pavel Dubinin
    Using Zend Lucene I cannot search numbers in description fields Added it like this: $doc->addField(Zend_Search_Lucene_Field::Text('description', $current_item['item_short_description'], 'utf-8')); Googling for this showed that applying following code should solve the problem, but it did not..: Zend_Search_Lucene_Analysis_Analyzer::setDefault(new Zend_Search_Lucene_Analysis_Analyzer_Common_TextNum_CaseInsensitive()); any thougts?

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  • Lucene.Net Keyword based case insensitive query ?

    - by Yoann. B
    Hi, I need to make a Lucene exact case insensitive keyword match query. I tried using KeywordAnalyzer but it's case sensitive ... Sample : Keyword : "Windows Server 2003" = Got Results Keyword : "windows server 2003" = No results ... Another sample (multi keywords) : Keywords : "ASP.NET, SQL Server" = Got results Keywords : "asp.net, sql server" = No results

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  • Distributed Lucene.NET

    - by user72185
    Hi, I have a Terabyte of data, maybe more, which I'd like to index and search with Lucene. I'd like to be able to split the index out to different machines, similar to what Solr does (if I understand Solr correctly). Are there any existing tools to do this on the Windows platform? Thanks!

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  • lucene query issue

    - by Sunil
    I am using Lucene with Alfresco. Here is my query: ( TYPE:"{com.company.customised.content.model}test" && (@\{com.company.customised.content.model\}testNo:111 && (@\{com.company.customised.content.model\}skill:or)) I have to search documents which are having property skill of value "or". The above query is not giving any results (I am getting failed to parse query). If I use the query up until testNo (ignoring skill), I am getting proper results: ( TYPE:"{com.company.customised.content.model}test" && (@\{com.company.customised.content.model\}testNo:111)) Can you please help me? Thanks

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  • Cheat sheets for Lucene/Solr?

    - by noname
    Is there any cheat sheet out there for Lucene/Solr query parameters, schema.xml elements (all the analyzers, tokenizers, etc.)? Or somewhere else I can find ALL query parameters? I cant find any with Google.

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