From 21d72c4a80fe2937d0c4ddd20624b27adbcd989b Mon Sep 17 00:00:00 2001 From: lizi00164331 Date: Mon, 7 Aug 2017 11:39:39 +0800 Subject: Upload the ESR GUI seed code Issue-ID: AAI-68 Change-Id: Ia50ce0570c2fabecd77199d4e8454f56fe587c4e Signed-off-by: lizi00164331 --- .../mongoose/examples/mapreduce/mapreduce.js | 100 +++++++++++++++++++++ 1 file changed, 100 insertions(+) create mode 100644 common/src/main/webapp/usageguide/appserver/node_modules/mongoose/examples/mapreduce/mapreduce.js (limited to 'common/src/main/webapp/usageguide/appserver/node_modules/mongoose/examples/mapreduce/mapreduce.js') diff --git a/common/src/main/webapp/usageguide/appserver/node_modules/mongoose/examples/mapreduce/mapreduce.js b/common/src/main/webapp/usageguide/appserver/node_modules/mongoose/examples/mapreduce/mapreduce.js new file mode 100644 index 0000000..6d67fbf --- /dev/null +++ b/common/src/main/webapp/usageguide/appserver/node_modules/mongoose/examples/mapreduce/mapreduce.js @@ -0,0 +1,100 @@ +// import async to make control flow simplier +var async = require('async'); + +// import the rest of the normal stuff +var mongoose = require('../../lib'); + +require('./person.js')(); + +var Person = mongoose.model('Person'); + +// define some dummy data +var data = [ + { + name: 'bill', + age: 25, + birthday: new Date().setFullYear((new Date().getFullYear() - 25)), + gender: 'Male' + }, + { + name: 'mary', + age: 30, + birthday: new Date().setFullYear((new Date().getFullYear() - 30)), + gender: 'Female' + }, + { + name: 'bob', + age: 21, + birthday: new Date().setFullYear((new Date().getFullYear() - 21)), + gender: 'Male' + }, + { + name: 'lilly', + age: 26, + birthday: new Date().setFullYear((new Date().getFullYear() - 26)), + gender: 'Female' + }, + { + name: 'alucard', + age: 1000, + birthday: new Date().setFullYear((new Date().getFullYear() - 1000)), + gender: 'Male' + } +]; + + +mongoose.connect('mongodb://localhost/persons', function(err) { + if (err) throw err; + + // create all of the dummy people + async.each(data, function(item, cb) { + Person.create(item, cb); + }, function(err) { + if (err) { + // handle error + } + + // alright, simple map reduce example. We will find the total ages of each + // gender + + // create the options object + var o = {}; + + o.map = function() { + // in this function, 'this' refers to the current document being + // processed. Return the (gender, age) tuple using + /* global emit */ + emit(this.gender, this.age); + }; + + // the reduce function receives the array of ages that are grouped by the + // id, which in this case is the gender + o.reduce = function(id, ages) { + return Array.sum(ages); + }; + + // other options that can be specified + + // o.query = { age : { $lt : 1000 }}; // the query object + // o.limit = 3; // max number of documents + // o.keeptemp = true; // default is false, specifies whether to keep temp data + // o.finalize = someFunc; // function called after reduce + // o.scope = {}; // the scope variable exposed to map/reduce/finalize + // o.jsMode = true; // default is false, force execution to stay in JS + o.verbose = true; // default is false, provide stats on the job + // o.out = {}; // objects to specify where output goes, by default is + // returned, but can also be stored in a new collection + // see: http://mongoosejs.com/docs/api.html#model_Model.mapReduce + Person.mapReduce(o, function(err, results, stats) { + console.log('map reduce took %d ms', stats.processtime); + console.log(results); + cleanup(); + }); + }); +}); + +function cleanup() { + Person.remove(function() { + mongoose.disconnect(); + }); +} -- cgit 1.2.3-korg