leanote protocol移到main进程, 所有图片的操作通过db_client进行操作

node_modules/nedb_proxy.js

@@ -0,0 +1,90 @@
+var ipc = require('ipc');
+
+function Find(dbProxy, dbname, query) {
+    this.query = query;
+    this.dbProxy = dbProxy;
+    this.dbname = dbname;
+}
+Find.prototype.sort = function (sorter) {
+    this.sorter = sorter;
+    return this;
+}
+
+Find.prototype.exec = function (callback) {
+    var params = {
+        query: this.query,
+        sorter: this.sorter
+    };
+    this.dbProxy.send(params, callback, 'find');
+};
+
+//==========
+
+function DBProxy(dbname) {
+    this.dbname = dbname;
+};
+
+var token = 1;
+var token2Callback = {};
+
+DBProxy.prototype.send = function(params, callback, method) {
+    token++;
+    var m = {
+        token: token,
+        method: method,
+        dbname: this.dbname,
+        params: params
+    }
+    token2Callback[token] = callback;
+    ipc.send('db-exec', m);
+};
+
+// NB.find({UserId: userId, $or: [{LocalIsDelete : { $exists : false }}, {LocalIsDelete: false}] }, function(err, notebooks) {
+// Notes.find(query).sort({'UpdatedTime': -1}).exec(function(err, notes) {
+DBProxy.prototype.find = function (params, callback) {
+    if (callback) {
+        this.send({query: params}, callback, 'find');
+    }
+    else {
+        return new Find(this, this.dbname, params);
+    }
+};
+DBProxy.prototype.findOne = function (params, callback) {
+    this.send(params, callback, 'findOne');
+};
+DBProxy.prototype.count = function (params, callback) {
+    this.send(params, callback, 'count');
+};
+DBProxy.prototype.insert = function (params, callback) {
+    this.send(params, callback, 'insert');
+};
+DBProxy.prototype.update = function (query, sets, options, callback) {
+    if (typeof options == 'function') {
+        callback = options;
+        options = {};
+    }
+    if (!options) {
+        options = {};
+    }
+    var params = {
+        query: query,
+        sets: sets,
+        options: options
+    };
+    this.send(params, callback, 'update');
+};
+DBProxy.prototype.remove = function (params, callback) {
+    this.send(params, callback, 'remove');
+};
+
+// m = {token: , err : , ret: }
+ipc.on('db-exec-ret', function(m) {
+    var token = m.token;
+    var callback = token2Callback[token];
+    // console.log('clent 接收到消息');
+    // console.log(m);
+    // console.log('--------------');
+    callback && callback(m.err, m.ret);
+});
+
+module.exports = DBProxy;