Fixing renamed files
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c0d543cef1
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332
server/index.js
Normal file → Executable file
332
server/index.js
Normal file → Executable file
@ -23,318 +23,56 @@
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'use strict';
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var _ = require('underscore');
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var geolib = require('geolib');
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var mysql = require('mysql');
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var pool = null;
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var _ = require('underscore');
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var express = require('express');
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var path = require('path');
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var search = require('./search.js');
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function innerProduct(values1, values2) {
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var result = 0.0;
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function main(staticFiles, port) {
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var app = express();
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for (var feature in values1) {
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if (feature in values2) {
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result += values1[feature] * values2[feature];
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}
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}
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return result;
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}
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function walkMatches(data, features, minScore, callback) {
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for (var i = 0, count = data.length; i < count; ++i) {
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var record = data[i];
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var score = innerProduct(features, record.features);
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if (score >= minScore) {
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callback(record, score);
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}
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}
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}
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function countRecords(data, features, minScore) {
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var count = 0;
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walkMatches(data, features, minScore, function(record, score) {
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++count;
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search.loadDb({
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connectionLimit: 10,
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database: 'hscd',
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host: 'localhost',
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user: 'hscd'
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});
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return count;
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}
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function findRecords(data, features, minScore) {
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var results = [];
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walkMatches(data, features, minScore, function(record, score) {
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results.push({
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name: record.name,
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score: score,
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distanceToUser: record.distanceToUser / 1000.0,
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distanceToStn: record.distanceToStn / 1000.0,
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closestStn: record.closestStn,
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id: record.id
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app.use('/query', function(req, res) {
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search.runQuery(req.query, function(results) {
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res.json(results);
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});
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});
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results.sort(function(a, b) {
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return b.score - a.score;
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});
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return results;
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}
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function step(range, steps, callback) {
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var stepSize = (range.max - range.min) / steps;
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for (var i = 0; i < steps; ++i) {
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var stepMax = range.max - stepSize * i;
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var stepMin = stepMax - stepSize;
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var stepMid = (stepMin + stepMax) / 2;
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callback(stepMid);
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}
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}
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function project(data, features, feature, minScore, range, steps) {
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var sample = _.clone(features);
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var results = [];
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step(range, steps, function(position) {
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sample[feature] = position;
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results.push({
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sample: position,
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count: countRecords(data, sample, minScore)
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app.use('/categories', function(req, res) {
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search.getCategories(function(results) {
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res.json(results);
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});
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});
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return results;
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}
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function buildHints(data, features, feature, minScore, range, steps) {
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var projection = project(
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data,
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features,
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feature,
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minScore,
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range,
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steps
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);
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var hints = [];
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_.each(projection, function(result) {
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hints.push({
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sample: result.sample,
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count: result.count
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app.use('/learn', function(req, res) {
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search.addCategory(req.query, function(results) {
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res.json(results);
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});
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});
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return hints;
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}
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function loadDb(params) {
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pool = mysql.createPool(params);
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}
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function getRecords(context, callback) {
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pool.query('SELECT * FROM reviews', function(err, rows) {
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if (err) {
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throw err;
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}
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var records = _.map(rows, function(row) {
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return {
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name: row.name,
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id: row.id,
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closestStn: row.closestStn,
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distanceToStn: row.distanceToStn,
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geo: {
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latitude: row.latitude,
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longitude: row.longitude
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},
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features: {
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delicious: row.delicious,
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accomodating: row.accomodating,
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affordable: row.affordable,
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atmospheric: row.atmospheric
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},
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};
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});
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computeRecordGeo(records, context);
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callback(records);
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});
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}
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function computeRecordGeo(records, context) {
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var distUserMin = Number.MAX_VALUE;
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var distUserMax = Number.MIN_VALUE;
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_.each(records, function(record) {
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record.distanceToUser = 0.0;
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if (context.geo) {
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record.distanceToUser = geolib.getDistance(record.geo, context.geo);
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}
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distUserMin = Math.min(distUserMin, record.distanceToUser);
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distUserMax = Math.max(distUserMax, record.distanceToUser);
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});
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var distUserRange = distUserMax - distUserMin;
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_.each(records, function(record) {
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record.features.nearby = -((record.distanceToUser - distUserMin) / distUserRange - 0.5) * 2.0;
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record.features.accessible = 1.0 - (record.distanceToStn / context.walkingDist);
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record.features.accessible = Math.min(record.features.accessible, 1.0);
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record.features.accessible = Math.max(record.features.accessible, -1.0);
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});
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}
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function sanitizeQuery(query) {
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var keys = [
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'delicious',
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'accomodating',
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'affordable',
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'atmospheric',
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'nearby',
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'accessible'
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];
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var features = {};
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_.each(keys, function(key) {
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features[key] = _.has(query.features, key) ? query.features[key] : 0;
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});
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query.features = features;
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for (var category in query.profile) {
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if (parseFloat(query.profile[category]) === 0) {
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delete query.profile[category];
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}
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}
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}
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function getCategories(callback) {
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pool.query('SELECT * FROM categories', function(err, rows) {
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if (err) {
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throw err;
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}
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var categories = _.map(rows, function(row) {
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return {id: row.id, description: row.description};
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});
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callback(categories);
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});
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}
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function addCategory(query, callback) {
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var description = query.description.trim();
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if (description) {
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pool.query('INSERT INTO categories(description) VALUES(?)', [description], function(err, info) {
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if (err) {
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throw err;
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}
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callback({
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id: info.insertId,
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description: description,
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success: true
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});
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});
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}
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else {
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callback({success: false});
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}
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}
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function removeCategory(query, callback) {
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pool.query('DELETE FROM categories WHERE id = (?)', [query.id], function(err, info) {
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if (err) {
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throw err;
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}
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callback({success: info.affectedRows > 0});
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});
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}
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function accessReview(query, callback) {
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pool.query('SELECT url FROM reviews WHERE id = (?) LIMIT 1', [query.id], function(err, rows) {
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if (err) {
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throw err;
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}
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var results = {
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success: rows.length > 0
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};
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if (results.success) {
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results.url = 'http://www.tripadvisor.com' + rows[0].url;
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pool.query('INSERT INTO history(date, reviewId) VALUES(NOW(), ?)', [query.id], function(err, info) {
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if (err) {
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throw err;
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}
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for (var categoryId in query.profile) {
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pool.query(
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'INSERT INTO historyGroups(categoryId, categoryValue, historyId) VALUES(?, ?, ?)',
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[categoryId, query.profile[categoryId], info.insertId]
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);
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}
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});
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}
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callback(results);
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});
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}
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function runQuery(query, callback) {
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sanitizeQuery(query);
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var context = {
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geo: query.geo,
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walkingDist: query.walkingDist * 1000.0
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};
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getRecords(context, function(data) {
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var searchResults = findRecords(
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data,
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query.features,
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query.minScore
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);
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var graphColumns = {};
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for (var feature in query.features) {
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var searchHints = buildHints(
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data,
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query.features,
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feature,
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query.minScore,
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query.range,
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query.hintSteps
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);
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graphColumns[feature] = {
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value: query.features[feature],
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hints: searchHints,
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steps: query.hintSteps
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};
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}
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callback({
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columns: graphColumns,
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items: searchResults.slice(0, query.maxResults),
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count: searchResults.length
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app.use('/forget', function(req, res) {
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search.removeCategory(req.query, function(results) {
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res.json(results);
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});
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});
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app.use('/access', function(req, res) {
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search.accessReview(req.query, function(results) {
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res.json(results);
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});
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});
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app.use(express.static(path.join(__dirname, '..', staticFiles)));
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app.listen(port);
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}
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module.exports = {
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loadDb: loadDb,
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runQuery: runQuery,
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getCategories: getCategories,
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addCategory: addCategory,
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removeCategory: removeCategory,
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accessReview: accessReview
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};
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if (require.main === module) {
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main('client', 3000);
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}
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340
server/search.js
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340
server/search.js
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@ -0,0 +1,340 @@
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#!/usr/bin/env node
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/*
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* Copyright (c) 2015 Alex Yatskov <alex@foosoft.net>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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* the Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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'use strict';
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var _ = require('underscore');
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var geolib = require('geolib');
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var mysql = require('mysql');
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var pool = null;
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function innerProduct(values1, values2) {
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var result = 0.0;
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for (var feature in values1) {
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if (feature in values2) {
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result += values1[feature] * values2[feature];
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}
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}
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return result;
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}
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function walkMatches(data, features, minScore, callback) {
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for (var i = 0, count = data.length; i < count; ++i) {
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var record = data[i];
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var score = innerProduct(features, record.features);
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if (score >= minScore) {
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callback(record, score);
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}
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}
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}
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function countRecords(data, features, minScore) {
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var count = 0;
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walkMatches(data, features, minScore, function(record, score) {
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++count;
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});
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return count;
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}
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function findRecords(data, features, minScore) {
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var results = [];
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walkMatches(data, features, minScore, function(record, score) {
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results.push({
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name: record.name,
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score: score,
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distanceToUser: record.distanceToUser / 1000.0,
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distanceToStn: record.distanceToStn / 1000.0,
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closestStn: record.closestStn,
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id: record.id
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});
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});
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results.sort(function(a, b) {
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return b.score - a.score;
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});
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return results;
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}
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function step(range, steps, callback) {
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var stepSize = (range.max - range.min) / steps;
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for (var i = 0; i < steps; ++i) {
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var stepMax = range.max - stepSize * i;
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var stepMin = stepMax - stepSize;
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var stepMid = (stepMin + stepMax) / 2;
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callback(stepMid);
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}
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}
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function project(data, features, feature, minScore, range, steps) {
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var sample = _.clone(features);
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var results = [];
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step(range, steps, function(position) {
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sample[feature] = position;
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results.push({
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sample: position,
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count: countRecords(data, sample, minScore)
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});
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});
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return results;
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}
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function buildHints(data, features, feature, minScore, range, steps) {
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var projection = project(
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data,
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features,
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feature,
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minScore,
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range,
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steps
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);
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var hints = [];
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_.each(projection, function(result) {
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hints.push({
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sample: result.sample,
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count: result.count
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});
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});
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return hints;
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}
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function loadDb(params) {
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pool = mysql.createPool(params);
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}
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function getRecords(context, callback) {
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pool.query('SELECT * FROM reviews', function(err, rows) {
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if (err) {
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throw err;
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}
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var records = _.map(rows, function(row) {
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return {
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name: row.name,
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id: row.id,
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closestStn: row.closestStn,
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distanceToStn: row.distanceToStn,
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geo: {
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latitude: row.latitude,
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longitude: row.longitude
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},
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features: {
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delicious: row.delicious,
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accomodating: row.accomodating,
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affordable: row.affordable,
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atmospheric: row.atmospheric
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},
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};
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});
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computeRecordGeo(records, context);
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callback(records);
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});
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}
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function computeRecordGeo(records, context) {
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var distUserMin = Number.MAX_VALUE;
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var distUserMax = Number.MIN_VALUE;
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_.each(records, function(record) {
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record.distanceToUser = 0.0;
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if (context.geo) {
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record.distanceToUser = geolib.getDistance(record.geo, context.geo);
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}
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distUserMin = Math.min(distUserMin, record.distanceToUser);
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distUserMax = Math.max(distUserMax, record.distanceToUser);
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});
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var distUserRange = distUserMax - distUserMin;
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_.each(records, function(record) {
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record.features.nearby = -((record.distanceToUser - distUserMin) / distUserRange - 0.5) * 2.0;
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record.features.accessible = 1.0 - (record.distanceToStn / context.walkingDist);
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record.features.accessible = Math.min(record.features.accessible, 1.0);
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record.features.accessible = Math.max(record.features.accessible, -1.0);
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});
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}
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function sanitizeQuery(query) {
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var keys = [
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'delicious',
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'accomodating',
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'affordable',
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'atmospheric',
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'nearby',
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'accessible'
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];
|
||||
|
||||
var features = {};
|
||||
_.each(keys, function(key) {
|
||||
features[key] = _.has(query.features, key) ? query.features[key] : 0;
|
||||
});
|
||||
|
||||
query.features = features;
|
||||
|
||||
for (var category in query.profile) {
|
||||
if (parseFloat(query.profile[category]) === 0) {
|
||||
delete query.profile[category];
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
function getCategories(callback) {
|
||||
pool.query('SELECT * FROM categories', function(err, rows) {
|
||||
if (err) {
|
||||
throw err;
|
||||
}
|
||||
|
||||
var categories = _.map(rows, function(row) {
|
||||
return {id: row.id, description: row.description};
|
||||
});
|
||||
|
||||
callback(categories);
|
||||
});
|
||||
}
|
||||
|
||||
function addCategory(query, callback) {
|
||||
var description = query.description.trim();
|
||||
|
||||
if (description) {
|
||||
pool.query('INSERT INTO categories(description) VALUES(?)', [description], function(err, info) {
|
||||
if (err) {
|
||||
throw err;
|
||||
}
|
||||
|
||||
callback({
|
||||
id: info.insertId,
|
||||
description: description,
|
||||
success: true
|
||||
});
|
||||
});
|
||||
}
|
||||
else {
|
||||
callback({success: false});
|
||||
}
|
||||
}
|
||||
|
||||
function removeCategory(query, callback) {
|
||||
pool.query('DELETE FROM categories WHERE id = (?)', [query.id], function(err, info) {
|
||||
if (err) {
|
||||
throw err;
|
||||
}
|
||||
|
||||
callback({success: info.affectedRows > 0});
|
||||
});
|
||||
}
|
||||
|
||||
function accessReview(query, callback) {
|
||||
pool.query('SELECT url FROM reviews WHERE id = (?) LIMIT 1', [query.id], function(err, rows) {
|
||||
if (err) {
|
||||
throw err;
|
||||
}
|
||||
|
||||
var results = {
|
||||
success: rows.length > 0
|
||||
};
|
||||
|
||||
if (results.success) {
|
||||
results.url = 'http://www.tripadvisor.com' + rows[0].url;
|
||||
|
||||
pool.query('INSERT INTO history(date, reviewId) VALUES(NOW(), ?)', [query.id], function(err, info) {
|
||||
if (err) {
|
||||
throw err;
|
||||
}
|
||||
|
||||
for (var categoryId in query.profile) {
|
||||
pool.query(
|
||||
'INSERT INTO historyGroups(categoryId, categoryValue, historyId) VALUES(?, ?, ?)',
|
||||
[categoryId, query.profile[categoryId], info.insertId]
|
||||
);
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
callback(results);
|
||||
});
|
||||
}
|
||||
|
||||
function runQuery(query, callback) {
|
||||
sanitizeQuery(query);
|
||||
|
||||
var context = {
|
||||
geo: query.geo,
|
||||
walkingDist: query.walkingDist * 1000.0
|
||||
};
|
||||
|
||||
getRecords(context, function(data) {
|
||||
var searchResults = findRecords(
|
||||
data,
|
||||
query.features,
|
||||
query.minScore
|
||||
);
|
||||
|
||||
var graphColumns = {};
|
||||
for (var feature in query.features) {
|
||||
var searchHints = buildHints(
|
||||
data,
|
||||
query.features,
|
||||
feature,
|
||||
query.minScore,
|
||||
query.range,
|
||||
query.hintSteps
|
||||
);
|
||||
|
||||
graphColumns[feature] = {
|
||||
value: query.features[feature],
|
||||
hints: searchHints,
|
||||
steps: query.hintSteps
|
||||
};
|
||||
}
|
||||
|
||||
callback({
|
||||
columns: graphColumns,
|
||||
items: searchResults.slice(0, query.maxResults),
|
||||
count: searchResults.length
|
||||
});
|
||||
});
|
||||
}
|
||||
|
||||
module.exports = {
|
||||
loadDb: loadDb,
|
||||
runQuery: runQuery,
|
||||
getCategories: getCategories,
|
||||
addCategory: addCategory,
|
||||
removeCategory: removeCategory,
|
||||
accessReview: accessReview
|
||||
};
|
||||
@ -1,78 +0,0 @@
|
||||
#!/usr/bin/env node
|
||||
|
||||
/*
|
||||
* Copyright (c) 2015 Alex Yatskov <alex@foosoft.net>
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy of
|
||||
* this software and associated documentation files (the "Software"), to deal in
|
||||
* the Software without restriction, including without limitation the rights to
|
||||
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
|
||||
* the Software, and to permit persons to whom the Software is furnished to do so,
|
||||
* subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in all
|
||||
* copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
|
||||
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
|
||||
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
|
||||
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
*/
|
||||
|
||||
'use strict';
|
||||
|
||||
var _ = require('underscore');
|
||||
var express = require('express');
|
||||
var path = require('path');
|
||||
var search = require('./search.js');
|
||||
|
||||
|
||||
function main(staticFiles, port) {
|
||||
var app = express();
|
||||
|
||||
search.loadDb({
|
||||
connectionLimit: 10,
|
||||
database: 'hscd',
|
||||
host: 'localhost',
|
||||
user: 'hscd'
|
||||
});
|
||||
|
||||
app.use('/query', function(req, res) {
|
||||
search.runQuery(req.query, function(results) {
|
||||
res.json(results);
|
||||
});
|
||||
});
|
||||
|
||||
app.use('/categories', function(req, res) {
|
||||
search.getCategories(function(results) {
|
||||
res.json(results);
|
||||
});
|
||||
});
|
||||
|
||||
app.use('/learn', function(req, res) {
|
||||
search.addCategory(req.query, function(results) {
|
||||
res.json(results);
|
||||
});
|
||||
});
|
||||
|
||||
app.use('/forget', function(req, res) {
|
||||
search.removeCategory(req.query, function(results) {
|
||||
res.json(results);
|
||||
});
|
||||
});
|
||||
|
||||
app.use('/access', function(req, res) {
|
||||
search.accessReview(req.query, function(results) {
|
||||
res.json(results);
|
||||
});
|
||||
});
|
||||
|
||||
app.use(express.static(path.join(__dirname, '..', staticFiles)));
|
||||
app.listen(port);
|
||||
}
|
||||
|
||||
if (require.main === module) {
|
||||
main('client', 3000);
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user