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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,75 +1,125 @@ | ||
| let MongoClient = require('mongodb').MongoClient, | ||
| mongo_config = require('../config/mongo.js'); | ||
| let MongoClient = require("mongodb").MongoClient, | ||
| mongo_config = require("../config/mongo.js"); | ||
|
|
||
| var _db; | ||
|
|
||
| module.exports = { | ||
| 'find': find, | ||
| 'find_and_count': find_and_count, | ||
| 'connect': connect | ||
| find: find, | ||
| findOne, | ||
| find_and_count: find_and_count, | ||
| connect: connect, | ||
| }; | ||
|
|
||
| function find_and_count(args, selector, collection,sort,page,items_per_page) { | ||
| return connect() | ||
| .then((db) => Promise.all([_find_paged(db,args,selector,collection,sort,page,items_per_page), _count(db,args,collection)])) | ||
| .then((results)=> { return {result: results[0],count: results[1]}; }); | ||
| }; | ||
| function find_and_count( | ||
| args, | ||
| selector, | ||
| collection, | ||
| sort, | ||
| page, | ||
| items_per_page | ||
| ) { | ||
| return connect() | ||
| .then((db) => | ||
| Promise.all([ | ||
| _find_paged(db, args, selector, collection, sort, page, items_per_page), | ||
| _count(db, args, collection), | ||
| ]) | ||
| ) | ||
| .then((results) => { | ||
| return { result: results[0], count: results[1] }; | ||
| }); | ||
| } | ||
|
|
||
| function _find_paged(db, args, selector, collection, sort,page, items_per_page) { | ||
| return new Promise((resolve,reject)=>{ | ||
| let col = db.collection(collection); | ||
| col.find(args, selector).sort(sort).skip(page*items_per_page).limit(items_per_page).toArray((err, docs) => { | ||
| if (err) | ||
| reject(Error(err.message)); | ||
| else | ||
| resolve(docs); | ||
| }); | ||
| }); | ||
| }; | ||
| function _find_paged( | ||
| db, | ||
| args, | ||
| selector, | ||
| collection, | ||
| sort, | ||
| page, | ||
| items_per_page | ||
| ) { | ||
| return new Promise((resolve, reject) => { | ||
| let col = db.collection(collection); | ||
| col | ||
| .find(args, selector) | ||
| .sort(sort) | ||
| .skip(page * items_per_page) | ||
| .limit(items_per_page) | ||
| .toArray((err, docs) => { | ||
| if (err) reject(Error(err.message)); | ||
| else resolve(docs); | ||
| }); | ||
| }); | ||
| } | ||
|
|
||
| function find(args, selector, collection,sort) { | ||
| if(sort===undefined) | ||
| sort={}; | ||
| return connect() | ||
| .then((db) => _find(db,args,selector,collection,sort)); | ||
| }; | ||
| function find(args, selector, collection, sort) { | ||
| if (sort === undefined) sort = {}; | ||
| return connect().then((db) => _find(db, args, selector, collection, sort)); | ||
| } | ||
|
|
||
| function findOne(args, selector, collection, sort){ | ||
| if (sort === undefined) sort = {}; | ||
| return connect().then((db) => _findOne(db, args, selector, collection, sort)); | ||
| } | ||
|
|
||
| function _find(db,args,selector,collection,sort){ | ||
| return new Promise((resolve,reject)=>{ | ||
| let col = db.collection(collection); | ||
| col.find(args,selector).sort(sort).toArray((err, docs) => { | ||
| if (err) | ||
| reject(Error(err.message)); | ||
| else | ||
| resolve(docs); | ||
| }); | ||
| }); | ||
| function _findOne(db, args, selector, collection, sort) { | ||
| return new Promise((resolve, reject) => { | ||
| let col = db.collection(collection); | ||
| col | ||
| .find(args, selector) | ||
| .sort(sort) | ||
| .limit(1) | ||
| .toArray((err, docs) => { | ||
| if (err) reject(Error(err.message)); | ||
| else resolve(docs.length ? docs[0] : null); | ||
| }); | ||
| }); | ||
| } | ||
| function _find(db, args, selector, collection, sort) { | ||
| return new Promise((resolve, reject) => { | ||
| let col = db.collection(collection); | ||
| col | ||
| .find(args, selector) | ||
| .sort(sort) | ||
| .toArray((err, docs) => { | ||
| if (err) reject(Error(err.message)); | ||
| else resolve(docs); | ||
| }); | ||
| }); | ||
| } | ||
|
|
||
| function _count(db,args,collection,sort){ | ||
| return new Promise((resolve,reject)=>{ | ||
| let col = db.collection(collection); | ||
| col.find(args).sort(sort).count((err, count) => { | ||
| if (err) | ||
| reject(Error(err.message)); | ||
| else | ||
| resolve(count); | ||
| }); | ||
| }); | ||
| function _count(db, args, collection, sort) { | ||
| return new Promise((resolve, reject) => { | ||
| let col = db.collection(collection); | ||
| col | ||
| .find(args) | ||
| .sort(sort) | ||
| .count((err, count) => { | ||
| if (err) reject(Error(err.message)); | ||
| else resolve(count); | ||
| }); | ||
| }); | ||
| } | ||
| function connect() { | ||
| return new Promise((resolve, reject) => { | ||
| if (_db !== undefined) | ||
| resolve(_db); | ||
| else { | ||
| let url = (mongo_config.url)?mongo_config.url:'mongodb://' + mongo_config.host + ':' + mongo_config.port + '/' + mongo_config.database; | ||
| MongoClient.connect(url, function(err, db) { | ||
| if (err) throw Error(err.message); | ||
| else { | ||
| resolve(db); | ||
| _db = db; | ||
| } | ||
| }); | ||
| } | ||
| }); | ||
| return new Promise((resolve, reject) => { | ||
| if (_db !== undefined) resolve(_db); | ||
| else { | ||
| let url = mongo_config.url | ||
| ? mongo_config.url | ||
| : "mongodb://" + | ||
| mongo_config.host + | ||
| ":" + | ||
| mongo_config.port + | ||
| "/" + | ||
| mongo_config.database; | ||
| MongoClient.connect(url, function (err, db) { | ||
| if (err) throw Error(err.message); | ||
| else { | ||
| resolve(db); | ||
| _db = db; | ||
| } | ||
| }); | ||
| } | ||
| }); | ||
| } |
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