Work on server
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parent
ba8685b2a8
commit
ffbaaf6f71
@ -1,125 +1,5 @@
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'use strict';
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function innerProduct(values1, values2) {
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var result = 0;
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for (var feature in values1) {
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result += values1[feature] * (values2[feature] || 0.0);
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}
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return result;
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}
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function searchData(queryParams, minScore) {
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var results = [];
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for (var i = 0, count = DATA_RECORDS.length; i < count; ++i) {
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var record = DATA_RECORDS[i];
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var score = innerProduct(queryParams, record['rating']);
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if (score >= minScore) {
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results.push({
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name: record['name'],
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url: 'http://www.tripadvisor.com' + record['relativeUrl'],
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score: score
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});
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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 searchStepper(range, steps, callback) {
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var stepSize = range.getLength() / steps;
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for (var i = 0; i < steps; ++i) {
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var stepMax = range.end - 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 searchProjection(queryParams, minScore, feature, range, steps) {
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var testParams = _.clone(queryParams);
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var results = [];
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searchStepper(range, steps, function(position) {
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testParams[feature] = position;
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results.push({
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'sample': position,
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'values': searchData(testParams, minScore)
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});
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});
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return results;
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}
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function searchProjection2d(queryParams, minScore, feature1, feature2, range, steps) {
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var testParams = _.clone(queryParams);
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var results = [];
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searchStepper(range, steps, function(sampleX) {
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testParams[feature1] = sampleX;
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searchStepper(range, steps, function(sampleY) {
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testParams[feature2] = sampleY;
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results.push({
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'sampleX': sampleX,
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'sampleY': sampleY,
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'values': searchData(testParams, minScore)
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});
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});
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});
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return results;
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}
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function searchBuildHints(queryParams, minScore, feature, range, steps) {
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var projection = searchProjection(
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queryParams,
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minScore,
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feature,
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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.values.length
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});
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});
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return hints;
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}
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function searchBuildHints2d(queryParams, minScore, feature1, feature2, range, steps) {
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var projection = searchProjection2d(
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queryParams,
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minScore,
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feature1,
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feature2,
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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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'sampleX': result.sampleX,
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'sampleY': result.sampleY,
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'count': result.values.length
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});
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});
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return hints;
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}
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function outputResults(results, maxResults) {
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$('#results').empty();
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$('#count').text(results.length);
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133
server/db/search.js
Normal file
133
server/db/search.js
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@ -0,0 +1,133 @@
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'use strict';
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var _ = require('underscore');
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var keywords = require('./keywords.json');
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var data = require('./data.json');
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function innerProduct(values1, values2) {
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var result = 0;
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for (var feature in values1) {
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result += values1[feature] * (values2[feature] || 0.0);
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}
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return result;
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}
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function searchData(queryParams, minScore) {
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var results = [];
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for (var i = 0, count = DATA_RECORDS.length; i < count; ++i) {
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var record = DATA_RECORDS[i];
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var score = innerProduct(queryParams, record['rating']);
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if (score >= minScore) {
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results.push({
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name: record['name'],
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url: 'http://www.tripadvisor.com' + record['relativeUrl'],
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score: score
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});
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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 searchStepper(range, steps, callback) {
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var stepSize = range.getLength() / steps;
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for (var i = 0; i < steps; ++i) {
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var stepMax = range.end - 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 searchProjection(queryParams, minScore, feature, range, steps) {
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var testParams = _.clone(queryParams);
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var results = [];
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searchStepper(range, steps, function(position) {
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testParams[feature] = position;
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results.push({
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'sample': position,
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'values': searchData(testParams, minScore)
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});
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});
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return results;
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}
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function searchProjection2d(queryParams, minScore, feature1, feature2, range, steps) {
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var testParams = _.clone(queryParams);
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var results = [];
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searchStepper(range, steps, function(sampleX) {
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testParams[feature1] = sampleX;
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searchStepper(range, steps, function(sampleY) {
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testParams[feature2] = sampleY;
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results.push({
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'sampleX': sampleX,
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'sampleY': sampleY,
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'values': searchData(testParams, minScore)
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});
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});
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});
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return results;
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}
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function searchBuildHints(queryParams, minScore, feature, range, steps) {
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var projection = searchProjection(
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queryParams,
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minScore,
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feature,
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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.values.length
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});
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});
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return hints;
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}
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function searchBuildHints2d(queryParams, minScore, feature1, feature2, range, steps) {
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var projection = searchProjection2d(
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queryParams,
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minScore,
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feature1,
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feature2,
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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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'sampleX': result.sampleX,
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'sampleY': result.sampleY,
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'count': result.values.length
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});
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});
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return hints;
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}
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module.exports.getKeywords = function() {
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return _.keys(keywords);
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}
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module.exports.execQuery = function() {
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return {};
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}
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@ -1,20 +1,21 @@
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#!/usr/bin/env node
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'use strict';
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var express = require('express');
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var keywords = require('./db/keywords.json');
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var data = require('./db/data.json');
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var _ = require('underscore');
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var search = require('./db/search.js');
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function main() {
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var app = express();
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app.use('/keywords', function(req, res) {
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console.log('Requesting keywords');
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res.json(_.keys(keywords));
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res.json(search.getKeywords());
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});
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app.use('/search', function(req, res) {
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console.log(req.query);
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console.log('Requesting search');
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res.json(search.execQuery());
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});
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app.listen(3000);
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@ -23,4 +24,3 @@ function main() {
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if (require.main === module) {
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main();
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}
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