mirror of
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96 lines
2.5 KiB
JavaScript
96 lines
2.5 KiB
JavaScript
var ipc = require('electron').ipcRenderer;
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function Find(dbProxy, dbname, query) {
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this.query = query;
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this.dbProxy = dbProxy;
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this.dbname = dbname;
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}
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Find.prototype.sort = function (sorter) {
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this.sorter = sorter;
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return this;
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}
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Find.prototype.exec = function (callback) {
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var params = {
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query: this.query,
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sorter: this.sorter
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};
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this.dbProxy.send(params, callback, 'find');
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};
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//==========
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function DBProxy(dbname) {
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this.dbname = dbname;
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};
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var token = 1;
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var token2Callback = {};
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DBProxy.prototype.send = function(params, callback, method) {
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token++;
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var m = {
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token: token,
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method: method,
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dbname: this.dbname,
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// 转为json字符串, 如果{[a], [a]}, 在main接收后变成了 {[a], [null]}, 对象引用问题
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params: params ? JSON.stringify(params) : ''
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}
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token2Callback[token] = callback;
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ipc.send('db-exec', m);
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};
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// NB.find({UserId: userId, $or: [{LocalIsDelete : { $exists : false }}, {LocalIsDelete: false}] }, function(err, notebooks) {
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// Notes.find(query).sort({'UpdatedTime': -1}).exec(function(err, notes) {
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DBProxy.prototype.find = function (params, callback) {
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if (callback) {
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// console.log('client');
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// console.log(params);
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this.send({query: params}, callback, 'find');
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}
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else {
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return new Find(this, this.dbname, params);
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}
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};
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DBProxy.prototype.findOne = function (params, callback) {
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this.send(params, callback, 'findOne');
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};
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DBProxy.prototype.count = function (params, callback) {
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this.send(params, callback, 'count');
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};
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DBProxy.prototype.insert = function (params, callback) {
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this.send(params, callback, 'insert');
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};
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DBProxy.prototype.update = function (query, sets, options, callback) {
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if (typeof options == 'function') {
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callback = options;
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options = {};
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}
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if (!options) {
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options = {};
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}
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var params = {
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query: query,
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sets: sets,
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options: options
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};
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this.send(params, callback, 'update');
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};
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DBProxy.prototype.remove = function (params, callback) {
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this.send(params, callback, 'remove');
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};
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// m = {token: , err : , ret: }
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ipc.on('db-exec-ret', function(event, m) {
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var token = m.token;
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var callback = token2Callback[token];
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// console.log('clent 接收到消息');
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// console.log(m);
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// console.log('--------------');
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if(m.ret && typeof m.ret == 'string') {
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m.ret = JSON.parse(m.ret);
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}
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callback && callback(m.err, m.ret);
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});
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module.exports = DBProxy; |