updated word count example
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3 changed files with 11 additions and 32 deletions
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@ -6,8 +6,7 @@ which I find to be concise, clear, and well designed. CouchRest lightly wraps
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CouchDB's HTTP API, managing JSON serialization, and remembering the URI-paths
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to CouchDB's API endpoints so you don't have to.
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CouchRest's lighweight is designed to make a simple base for application and
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framework-specific object oriented APIs.
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CouchRest is designed to make a simple base for application and framework-specific object oriented APIs. CouchRest is Object-Mapper agnostic, the parsed JSON it returns from CouchDB shows up as subclasses of Ruby's Hash. Naked JSON, just as it was mean to be.
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## Easy Install
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@ -1,4 +1,5 @@
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require File.dirname(__FILE__) + '/../../couchrest'
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require 'rubygems'
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require 'couchrest'
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couch = CouchRest.new("http://127.0.0.1:5984")
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db = couch.database('word-count-example')
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@ -40,28 +41,6 @@ books.keys.each do |book|
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end
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end
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# word_count = {
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# :map => 'function(doc){
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# var words = doc.text.split(/\W/);
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# words.forEach(function(word){
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# if (word.length > 0) emit([word,doc.title],1);
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# });
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# }',
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# :reduce => 'function(key,combine){
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# return sum(combine);
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# }'
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# }
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#
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# db.delete db.get("_design/word_count") rescue nil
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#
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# db.save({
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# "_id" => "_design/word_count",
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# :views => {
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# :count => word_count,
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# :words => {:map => word_count[:map]}
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# }
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# })
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# puts "The books have been stored in your CouchDB. To initiate the MapReduce process, visit http://127.0.0.1:5984/_utils/ in your browser and click 'word-count-example', then select view 'words' or 'count'. The process could take about 15 minutes on an average MacBook."
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#
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@ -1,22 +1,23 @@
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require File.dirname(__FILE__) + '/../../couchrest'
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require 'rubygems'
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require 'couchrest'
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couch = CouchRest.new("http://127.0.0.1:5984")
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db = couch.database('word-count-example')
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puts "Now that we've parsed all those books into CouchDB, the queries we can run are incredibly flexible."
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puts "\nThe simplest query we can run is the total word count for all words in all documents:"
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puts db.view('word_count/count').inspect
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puts "this will take a few minutes the first time. if it times out, just rerun this script in a few few minutes."
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puts db.view('word_count/words').inspect
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puts "\nWe can also narrow the query down to just one word, across all documents. Here is the count for 'flight' in all three books:"
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word = 'flight'
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params = {
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:startkey => [word],
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:endkey => [word,'Z']
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:endkey => [word,{}]
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}
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puts db.view('word_count/count',params).inspect
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puts db.view('word_count/words',params).inspect
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puts "\nWe scope the query using startkey and endkey params to take advantage of CouchDB's collation ordering. Here are the params for the last query:"
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puts params.inspect
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@ -28,7 +29,7 @@ params = {
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:key => [word, title]
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}
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puts db.view('word_count/count',params).inspect
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puts db.view('word_count/words',params).inspect
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puts "\nHere are the params for 'flight' in the da-vinci book:"
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