Workshop Geoloc com MongoDb - Exercicios

exe01.js

var MongoClient = require('mongodb').MongoClient
  , url = 'mongodb://localhost:27017/geodb'
  , lugar = {
      name: "Zona da Creide"
    , loc: [50, 50]
    }
  ;

MongoClient.connect(url, function(err, db) {
   if(err) return console.log(err);

  db.collection('lugares').insert(lugar, function(err, result) {
    if(err) return console.log(err);
    return console.log('Lugar ' + lugar.name + ' cadastrado: ', lugar);
  });
});

exe02.js

var MongoClient = require('mongodb').MongoClient
  , url = 'mongodb://localhost:27017/geodb'
  ;

MongoClient.connect(url, function(err, db) {
  if(err) return console.dir(err)

  var collection = db.collection('lugares');

  collection.ensureIndex({loc: "2d"}, {min: -1000, max: 1000}, function(err, result) {
    if(err) return console.dir(err);

    return console.log(result);
  });

});

exe03.js

var MongoClient = require('mongodb').MongoClient
  , url = 'mongodb://localhost:27017/geodb'
  , lugares = [
        {name: "Bar do Ze", loc: [50, 50]}
      , {name: "Bar da Dirce", loc: [10, 10]}
      , {name: "C Q Sabe", loc: [45, 45]}
    ]
  ;

MongoClient.connect(url, function(err, db) {
   if(err) return console.dir(err)

  db.collection('lugares').insert(lugares, function(err, result) {
    if(err) return console.dir(err)
    return console.log('Lugares cadastrados: ', lugares);
  });

});

exe04.js

var MongoClient = require('mongodb').MongoClient
  , url = 'mongodb://localhost:27017/geodb'
  , lugares = [
        {name: "Bar do Ze", loc: [50, 50]}
      , {name: "Bar da Dirce", loc: [10, 10]}
      , {name: "C Q Sabe", loc: [45, 45]}
    ]
  ;

MongoClient.connect(url, function(err, db) {
   if(err) return console.dir(err)

  db.collection('lugares')
    .find({loc: {$near: [50,50], $maxDistance: 10}})
    .toArray(function(err, docs) {
    if(err) return console.dir(err)
    return console.log(docs);
  });

});

exe05.js

var MongoClient = require('mongodb').MongoClient
  , url = 'mongodb://localhost:27017/geodb'
  , lugares = [
        {name: "Bar do Ze", loc: [50, 50]}
      , {name: "Bar da Dirce", loc: [10, 10]}
      , {name: "C Q Sabe", loc: [45, 45]}
    ]
  ;

MongoClient.connect(url, function(err, db) {
   if(err) return console.dir(err)

  db.collection('lugares').geoNear(50, 50, {$maxDistance:10}, function(err, docs) {
    if(err) return console.dir(err)
    return console.log(docs);
  });

});

exe06.js

var MongoClient = require('mongodb').MongoClient
  , url = 'mongodb://localhost:27017/geodb'
  , lugares = [
        {name: "Bar do Ze", loc: [50, 50]}
      , {name: "Bar da Dirce", loc: [10, 10]}
      , {name: "C Q Sabe", loc: [45, 45]}
    ]
  ;
var box = [[30, 30], [60, 60]];

MongoClient.connect(url, function(err, db) {
   if(err) return console.dir(err)

  db.collection('lugares').find({loc: {$within: {$box: box}}}).toArray(function(err, docs) {
    if(err) return console.dir(err)
    return console.log(docs);
  });

});

exe07.js

var MongoClient = require('mongodb').MongoClient
  , url = 'mongodb://localhost:27017/geodb'
  , lugares = [
        {name: "Bar do Ze", loc: [50, 50]}
      , {name: "Bar da Dirce", loc: [10, 10]}
      , {name: "C Q Sabe", loc: [45, 45]}
    ]
  ;
var triangle = [[40, 40], [40, 50], [45, 45]];

MongoClient.connect(url, function(err, db) {
   if(err) return console.dir(err)

  db.collection('lugares').find({loc: {$within: {$polygon: triangle}}}).toArray(function(err, docs) {
    if(err) return console.dir(err)
    return console.log(docs);
  });

});