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945 lines
32 KiB
JavaScript
945 lines
32 KiB
JavaScript
var util = require('util');
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var querystring = require('querystring');
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//数据库配置
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var dbConfigs = [];
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//数据库实例化对象
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var dbInstances = [];
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//数据表的字段信息
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var tableFields = {}
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/**
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* Model类
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* @type {[type]}
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*/
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var Model = module.exports = Class(function(){
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return {
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initAttr: function(){
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// 当前数据库操作对象
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this.db = null;
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// 主键名称
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this.pk = "id";
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// 数据库连接序号
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this.linkNum = 0;
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// 数据表前缀
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this.tablePrefix = "";
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// 模型名称
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this.name = "";
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// 数据库名称
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this.dbName = "";
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// 数据库配置
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this.connection = "";
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// 数据表名（不包含表前缀）
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this.tableName = "";
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// 实际数据表名（包含表前缀）
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this.trueTableName = "";
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// 字段信息
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this.fields = {};
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// 数据信息
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this._data = {};
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// 参数
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this._options = {};
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// 是否自动检测数据表字段信息
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this.autoCheckFields = true;
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// 初始化的promise
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this.promise = null;
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},
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/**
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* 取得DB类的实例对象 字段检查
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* @access public
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* @param string $name 模型名称
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* @param string $tablePrefix 表前缀
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* @param mixed $connection 数据库连接信息
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*/
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init: function(name, tablePrefix, connection){
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this.initAttr();
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// 获取模型名称
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if (name) {
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if (name.indexOf(".") > -1) {
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name = name.split(".");
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this.dbName = name[0];
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this.name = name[1];
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}else{
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this.name = name;
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}
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}else if(!this.name){
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this.getModelName();
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}
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// 设置表前缀
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this.tablePrefix = tablePrefix === undefined ? (this.tablePrefix || C("db_prefix")) : tablePrefix;
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//子类的init方法
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this._init && this._init();
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// 数据库初始化操作
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// 获取数据库操作对象
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// 当前模型有独立的数据库连接信息
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this.promise = this.initDb(0, connection || this.connection);
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},
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/**
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* 初始化数据库连接
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* @access public
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* @param integer $linkNum 连接序号
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* @param mixed $config 数据库连接信息
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* @param array $params 模型参数
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* @return Model
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*/
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initDb: function(linkNum, config, params){
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linkNum = linkNum | 0;
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this.linkNum = linkNum;
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if (!linkNum && this.db) {
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return getPromise(this.db);
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};
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if (!dbInstances[linkNum] || config && dbConfigs[linkNum] != config) {
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if (config && isString(config) && config.indexOf("/") == -1) {
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config = C(config);
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};
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dbInstances[linkNum] = thinkRequire("Db").getInstance(config);
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}
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if (params) {
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extend(this, params);
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};
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// 记录连接信息
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dbConfigs[linkNum] = config;
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this.db = dbInstances[linkNum];
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if (this.name && this.autoCheckFields) {
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return this.checkTableInfo();
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};
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return getPromise(this);
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},
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/**
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* 获取模型名
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* @access public
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* @return string
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*/
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getModelName: function(){
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if (this.name) {
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return this.name;
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};
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var filename = this.__filename || __filename;
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var name = filename.split("/").pop();
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this.name = name.substr(0, name.length - 8);
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return this.name;
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},
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/**
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* 获取表名
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* @return {[type]} [description]
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*/
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getTableName: function(){
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if (!this.trueTableName) {
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var tableName = this.tablePrefix || "";
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tableName += this.tableName || parseName(this.getModelName());
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this.trueTableName = tableName.toLowerCase();
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};
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var tableName = (this.dbName ? this.dbName + "." : "") + this.trueTableName;
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return tableName;
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},
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/**
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* 获取缓存数据表字段信息的缓存文件
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* @return {[type]} [description]
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*/
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// getFieldsCacheFile: function(){
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// var db = this.dbName || C('db_name');
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// return '_fields/' + db + "." + this.getModelName().toLowerCase();
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// },
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/**
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* 自动检测数据表信息
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* @access protected
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* @return void
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*/
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checkTableInfo: function(){
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if (isEmpty(this.fields)) {
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if (C('db_fields_cache')) {
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var fields = tableFields[this.getTableName()];
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if (fields) {
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this.fields = fields;
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return getPromise(fields);
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};
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};
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// 每次都会读取数据表信息
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return this.flushFields();
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};
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return getPromise(this.fields);
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},
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/**
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* 刷新数据表字段信息
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* @return promise [description]
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*/
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flushFields: function(){
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this.db.setModel(this.name);
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var self = this;
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return this.getTableFields(this.getTableName(), true).then(function(fields){
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self.fields = fields;
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if (C('db_fields_cache')) {
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tableFields[self.getTableName()] = fields;
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};
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return fields;
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})
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},
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/**
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* 获取数据表的字段
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* @param {[type]} table
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* @param {[type]} all
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* @return {[type]}
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*/
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getTableFields: function(table, all){
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if (table === true) {
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table = undefined;
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all = true;
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};
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if (table) {
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return this.db.getFields(table).then(function(data){
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var fields = {
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"_field": Object.keys(data || {}),
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"_autoinc": false,
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"_unique": []
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};
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var types = {};
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for(var key in data){
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var val = data[key];
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types[key] = val.type;
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if (val.primary) {
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fields['_pk'] = key;
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if (val.autoinc) {
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fields['_autoinc'] = true;
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};
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}else if (val.unique) {
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fields._unique.push(key);
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};
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}
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fields['_type'] = types;
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return all ? fields : fields["_field"];
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})
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};
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if (!isEmpty(this.fields)) {
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return getPromise(all ? this.fields : this.fields["_field"]);
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};
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return this.getTableFields(this.getTableName(), all);
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},
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/**
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* 获取类型为唯一的字段
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* @return {[type]} [description]
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*/
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getUniqueField: function(data){
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var unqiueFileds = this.fields._unique;
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var unqiue = "";
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unqiueFileds.some(function(item){
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if (!data || data[item]) {
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return unqiue = item;
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};
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});
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return unqiue;
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},
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/**
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* 获取上一次操作的sql
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* @return {[type]} [description]
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*/
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getLastSql: function(){
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return this.db.getLastSql();
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},
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/**
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* 获取主键名称
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* @access public
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* @return string
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*/
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getPk: function(){
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return this.fields['_pk'] || this.pk;
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},
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/**
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* 缓存
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* @param {[type]} key [description]
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* @param {[type]} expire [description]
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* @param {[type]} type [description]
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* @return {[type]} [description]
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*/
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cache: function(key, expire, type){
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if (key === undefined) {
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return this;
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};
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if (isObject(key)) {
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this._options.cache = key;
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}else{
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//如果没有key，则根据sql语句自动生成
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if (isNumber(key)) {
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type = expire;
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expire = key;
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key = "";
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};
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this._options.cache = {
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key: key,
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expire: expire,
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type: type
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};
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}
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return this;
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},
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/**
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* 指定查询数量
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* @param {[type]} offset [description]
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* @param {[type]} length [description]
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* @return {[type]} [description]
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*/
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limit: function(offset, length){
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this._options.limit = length === undefined ? offset : offset + "," + length;
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return this;
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},
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/**
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* 指定分页
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* @return {[type]} [description]
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*/
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page: function(page, listRows){
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this._options.page = listRows === undefined ? page : page + "," + listRows;
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return this;
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},
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/**
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* where条件
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* @return {[type]} [description]
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*/
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where: function(where){
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if (where && isString(where)) {
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where = {_string: where};
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};
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this._options.where = extend(this._options.where || {}, where);
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return this;
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},
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/**
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* 要查询的字段
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* @param {[type]} field [description]
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* @param {[type]} reverse [description]
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* @return {[type]} [description]
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*/
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field: function(field, reverse){
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if (isArray(field)) {
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field = field.join(",")
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}else if (!field) {
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field = "*";
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};
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this._options.field = field;
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this._options.fieldReverse = reverse;
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return this;
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},
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/**
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* 联合查询
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* @return {[type]} [description]
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*/
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union: function(union){
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if (!this._options.union) {
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this._options.union = [];
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};
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this._options.union.push(union);
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return this;
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},
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/**
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* 联合查询
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* @param {[type]} join [description]
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* @return {[type]} [description]
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*/
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join: function(join){
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if (isArray(join)) {
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this._options.join = join;
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}else{
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if (!this._options.join) {
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this._options.join = [];
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};
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this._options.join.push(join);
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}
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return this;
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},
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/**
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* 生成查询SQL 可用于子查询
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* @param {[type]} options [description]
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* @return {[type]} [description]
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*/
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buildSql: function(options){
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var self = this;
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return this.parseOptions(options).then(function(options){
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return "( " + self.db.buildSelectSql(options) + " )";
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})
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},
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/**
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* 解析参数，在this.promise后执行
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* @param {[type]} options [description]
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* @return promise [description]
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*/
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parseOptions: function(options, extraOptions){
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var self = this;
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options = this.parseWhereOptions(options);
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options = extend(this._options, options, extraOptions);
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// 查询过后清空sql表达式组装 避免影响下次查询
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this._options = {};
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var promise = null;
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//获取数据表下的字段信息
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if (options.table) {
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promise = this.getTableFields(options.table);
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}else{
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options.table = this.getTableName();
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if (isEmpty(self.fields["_field"])) {
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promise = this.promise.then(function(){
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return self.fields["_field"];
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});
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}else{
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promise = getPromise(self.fields["_field"]);
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}
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}
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//数据表别名
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if (options.alias) {
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options.table += " " + options.alias;
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};
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options.model = this.name;
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return promise.then(function(fields){
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// 字段类型验证
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if (options.where && isObject(options.where) && !isEmpty(fields)) {
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// 对数组查询条件进行字段类型检查
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for(var key in options.where){
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var val = options.where[key];
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key = key.trim();
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if (fields.indexOf(key) > -1) {
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if (isScalar(val)) {
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options.where = self.parseType(options.where, key);
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};
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}else if(key.substr(0, 1) !== "_" && !(/[\.\|\&]/.test(key))){
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delete options.where[key];
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}
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}
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};
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//field反选
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if (options.field && options.fieldReverse) {
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var optionsField = options.field.split(',');
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options.field = fields.filter(function(item){
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if (optionsField.indexOf(item) > -1) {
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return;
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};
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return item;
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}).join(',');
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};
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options = self._optionsFilter(options, fields);
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return options;
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});
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},
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/**
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* 选项过滤器
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* 具体的Model类里进行实现
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* @param {[type]} options [description]
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* @return {[type]} [description]
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*/
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_optionsFilter: function(options, fields){
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return options;
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},
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/**
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* 数据类型检测
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* @param {[type]} data [description]
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* @param {[type]} key [description]
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* @return {[type]} [description]
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*/
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parseType: function(data, key){
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var fieldType = this.fields["_type"][key] || "";
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if (fieldType.indexOf("bigint") === -1 && fieldType.indexOf("int") > -1) {
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data[key] = parseInt(data[key], 10) || 0;
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}else if(fieldType.indexOf("double") > -1 || fieldType.indexOf("float") > -1){
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data[key] = parseFloat(data[key]) || 0.0;
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}else if(fieldType.indexOf('bool') > -1){
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data[key] = !! data[key];
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}
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return data;
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},
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/**
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* 对插入到数据库中的数据进行处理，要在parseOptions后执行
|
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* @param {[type]} data [description]
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* @return {[type]} [description]
|
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*/
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parseData: function(data){
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data = extend({}, data);
|
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if (!isEmpty(this.fields)) {
|
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for(var key in data){
|
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var val = data[key];
|
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if (this.fields["_field"].indexOf(key) === -1) {
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delete data[key];
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}else if(isScalar(val)){
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data = this.parseType(data, key);
|
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}
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}
|
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};
|
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//安全过滤
|
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if (typeof this._options.filter == 'function') {
|
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for(var key in data){
|
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data[key] = this._options.filter.call(this, key, data[key]);
|
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}
|
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delete this._options.filter;
|
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};
|
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data = this._dataFilter(data);
|
||
return data;
|
||
},
|
||
/**
|
||
* 数据过滤器
|
||
* 具体的Model类里进行实现
|
||
* @param {[type]} data [description]
|
||
* @return {[type]} [description]
|
||
*/
|
||
_dataFilter: function(data){
|
||
return data;
|
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},
|
||
/**
|
||
* 数据插入之前操作，可以返回一个promise
|
||
* @param {[type]} data [description]
|
||
* @param {[type]} options [description]
|
||
* @return {[type]} [description]
|
||
*/
|
||
_beforeAdd: function(data, options){
|
||
return data;
|
||
},
|
||
/**
|
||
* 数据插入之后操作，可以返回一个promise
|
||
* @param {[type]} data [description]
|
||
* @param {[type]} options [description]
|
||
* @return {[type]} [description]
|
||
*/
|
||
_afterAdd: function(data, options){
|
||
return data;
|
||
},
|
||
/**
|
||
* 添加一条数据
|
||
* @param {[type]} data [description]
|
||
* @param {[type]} options [description]
|
||
* @param int 返回插入的id
|
||
*/
|
||
add: function(data, options, replace){
|
||
//copy data
|
||
data = extend({}, data);
|
||
if (isEmpty(data)) {
|
||
if (this._data) {
|
||
data = this._data;
|
||
this._data = {};
|
||
}else{
|
||
return getPromise(L("_DATA_TYPE_INVALID_"), true);
|
||
}
|
||
};
|
||
var self = this;
|
||
//解析后的选项
|
||
var parsedOptions = {};
|
||
//解析后的数据
|
||
var parsedData = {};
|
||
return this.parseOptions(options).then(function(options){
|
||
parsedOptions = options;
|
||
return self._beforeAdd(data, parsedOptions);
|
||
}).then(function(data){
|
||
parsedData = data;
|
||
data = self.parseData(data);
|
||
return self.db.insert(data, parsedOptions, replace);
|
||
}).then(function(){
|
||
parsedData[self.getPk()] = self.db.getLastInsertId();
|
||
return self._afterAdd(parsedData, parsedOptions);
|
||
}).then(function(){
|
||
return parsedData[self.getPk()];
|
||
});
|
||
},
|
||
/**
|
||
* 插入多条数据
|
||
* @param {[type]} data [description]
|
||
* @param {[type]} options [description]
|
||
* @param {[type]} replace [description]
|
||
*/
|
||
addAll: function(data, options, replace){
|
||
if (!isArray(data) || !isObject(data[0])) {
|
||
return getPromise(L("_DATA_TYPE_INVALID_"), true);
|
||
};
|
||
var self = this;
|
||
return this.parseOptions(options).then(function(options){
|
||
return self.db.insertAll(data, options, replace);
|
||
}).then(function(){
|
||
return self.db.getLastInsertId();
|
||
})
|
||
},
|
||
/**
|
||
* 删除后续操作
|
||
* @return {[type]} [description]
|
||
*/
|
||
_afterDelete: function(data, options){
|
||
return data;
|
||
},
|
||
/**
|
||
* 删除数据
|
||
* @return {[type]} [description]
|
||
*/
|
||
delete: function(options){
|
||
var self = this;
|
||
var parsedOptions = {};
|
||
return this.parseOptions(options).then(function(options){
|
||
parsedOptions = options;
|
||
return self.db.delete(options);
|
||
}).then(function(affectedRows){
|
||
return self._afterDelete(parsedOptions.where || {}, parsedOptions);
|
||
});
|
||
},
|
||
/**
|
||
* 更新前置操作
|
||
* @param {[type]} data [description]
|
||
* @param {[type]} options [description]
|
||
* @return {[type]} [description]
|
||
*/
|
||
_beforeUpdate: function(data, options){
|
||
return data;
|
||
},
|
||
/**
|
||
* 更新后置操作
|
||
* @param {[type]} data [description]
|
||
* @param {[type]} options [description]
|
||
* @return {[type]} [description]
|
||
*/
|
||
_afterUpdate: function(data, options){
|
||
return data;
|
||
},
|
||
/**
|
||
* 更新数据
|
||
* @return {[type]} [description]
|
||
*/
|
||
update: function(data, options){
|
||
data = extend({}, data);
|
||
if (isEmpty(data)) {
|
||
if (this._data) {
|
||
data = this._data;
|
||
this._data = {};
|
||
}else{
|
||
return getPromise(L("_DATA_TYPE_INVALID_"), true);
|
||
}
|
||
};
|
||
var self = this;
|
||
var pk = self.getPk();
|
||
var parsedOptions = {};
|
||
var parsedData = {};
|
||
var affectedRows = 0;
|
||
return this.parseOptions(options).then(function(options){
|
||
parsedOptions = options;
|
||
return self._beforeUpdate(data, options);
|
||
}).then(function(data){
|
||
parsedData = data;
|
||
data = self.parseData(data);
|
||
if (isEmpty(parsedOptions.where) || isEmpty(parsedOptions.where[pk])) {
|
||
// 如果存在主键数据 则自动作为更新条件
|
||
if (!isEmpty(data[pk])) {
|
||
parsedOptions.where = getObject(pk, data[pk]);
|
||
delete data[pk];
|
||
}else{
|
||
return getPromise(L("_OPERATION_WRONG_"), true);
|
||
}
|
||
}else{
|
||
parsedData[pk] = parsedOptions.where[pk];
|
||
}
|
||
return self.db.update(data, parsedOptions);
|
||
}).then(function(data){
|
||
affectedRows = data.affectedRows;
|
||
return self._afterUpdate(parsedData, parsedOptions);
|
||
}).then(function(){
|
||
return affectedRows;
|
||
})
|
||
},
|
||
/**
|
||
* 更新多个数据，自动用主键作为查询条件
|
||
* @param {[type]} dataList [description]
|
||
* @return {[type]} [description]
|
||
*/
|
||
updateAll: function(dataList){
|
||
if (!isArray(dataList) || !isObject(dataList[0])) {
|
||
return getPromise(L("_DATA_TYPE_INVALID_"), true);
|
||
};
|
||
var promises = [];
|
||
var self = this;
|
||
dataList.forEach(function(data){
|
||
promises.push(self.update(data));
|
||
});
|
||
return Promise.all(promises);
|
||
},
|
||
/**
|
||
* 更新某个字段的值
|
||
* @param {[type]} field [description]
|
||
* @param {[type]} value [description]
|
||
* @return {[type]} [description]
|
||
*/
|
||
updateField: function(field, value){
|
||
var data = {};
|
||
if (isObject(field)) {
|
||
data = field;
|
||
}else{
|
||
data[field] = value;
|
||
}
|
||
return this.update(data);
|
||
},
|
||
/**
|
||
* 字段值增长
|
||
* @return {[type]} [description]
|
||
*/
|
||
updateInc: function(field, step){
|
||
step = parseInt(step, 10) || 1;
|
||
return this.updateField(field, ["exp", field + "+" + step]);
|
||
},
|
||
/**
|
||
* 字段值减少
|
||
* @return {[type]} [description]
|
||
*/
|
||
updateDec: function(field, step){
|
||
step = parseInt(step, 10) || 1;
|
||
return this.updateField(field, ["exp", field + "-" + step]);
|
||
},
|
||
/**
|
||
* 解析options中简洁的where条件
|
||
* @return {[type]} [description]
|
||
*/
|
||
parseWhereOptions: function(options){
|
||
if (isNumber(options) || isString(options)) {
|
||
var pk = this.getPk();
|
||
options += "";
|
||
var where = {};
|
||
if (options.indexOf(",") > -1) {
|
||
where[pk] = ["IN", options];
|
||
}else{
|
||
where[pk] = options;
|
||
}
|
||
options = {
|
||
where: where
|
||
};
|
||
}
|
||
return options || {};
|
||
},
|
||
/**
|
||
* find查询后置操作
|
||
* @return {[type]} [description]
|
||
*/
|
||
_afterFind: function(result, options){
|
||
return result;
|
||
},
|
||
/**
|
||
* 查询一条数据
|
||
* @return 返回一个promise
|
||
*/
|
||
find: function(options){
|
||
var self = this;
|
||
var parsedOptions = {};
|
||
return this.parseOptions(options, {
|
||
limit: 1
|
||
}).then(function(options){
|
||
parsedOptions = options;
|
||
return self.db.select(options);
|
||
}).then(function(data){
|
||
return self._afterFind(data[0] || {}, parsedOptions);
|
||
})
|
||
},
|
||
/**
|
||
* 查询后置操作
|
||
* @param {[type]} result [description]
|
||
* @param {[type]} options [description]
|
||
* @return {[type]} [description]
|
||
*/
|
||
_afterSelect: function(result, options){
|
||
return result;
|
||
},
|
||
/**
|
||
* 查询数据
|
||
* @return 返回一个promise
|
||
*/
|
||
select: function(options){
|
||
var self = this;
|
||
var parsedOptions = {};
|
||
return this.parseOptions(options).then(function(options){
|
||
parsedOptions = options;
|
||
return self.db.select(options);
|
||
}).then(function(result){
|
||
return self._afterSelect(result, parsedOptions);
|
||
});
|
||
},
|
||
selectAdd: function(fields, table, options){
|
||
var self = this;
|
||
return this.parseOptions(options).then(function(options){
|
||
fields = fields || options.field;
|
||
table = table || self.getTableName();
|
||
return self.db.selectInsert(fields, table, options);
|
||
});
|
||
},
|
||
/**
|
||
* 获取一条记录的某个字段值
|
||
* @return {[type]} [description]
|
||
*/
|
||
getField: function(field, sepa){
|
||
field = field.trim();
|
||
var self = this;
|
||
var multi = false;
|
||
return this.parseOptions({
|
||
"field": field
|
||
}).then(function(options){
|
||
if (field.indexOf(",") > -1) {
|
||
if (options.limit === undefined && isNumber(sepa)) {
|
||
options.limit = sepa;
|
||
};
|
||
multi = true;
|
||
}else{
|
||
options.limit = isNumber(sepa) ? sepa : 1;
|
||
}
|
||
return self.db.select(options);
|
||
}).then(function(data){
|
||
if (multi) {
|
||
var length = field.split(",").length;
|
||
var field = Object.keys(data[0] || {});
|
||
var key = field.shift();
|
||
var key2 = field.shift();
|
||
var cols = {};
|
||
data.forEach(function(item){
|
||
var name = item[key];
|
||
if (length === 2) {
|
||
cols[name] = item[key2];
|
||
}else{
|
||
cols[name] = isString(sepa) ? item.join(sepa) : item;
|
||
}
|
||
});
|
||
return cols;
|
||
}else{
|
||
if (sepa !== true && options.limit == 1) {
|
||
return data[0];
|
||
};
|
||
return Object.values(data[0] || {})[0];
|
||
}
|
||
})
|
||
},
|
||
/**
|
||
* 根据某个字段值获取一条数据
|
||
* @param {[type]} name [description]
|
||
* @param {[type]} value [description]
|
||
* @return {[type]} [description]
|
||
*/
|
||
getBy: function(name, value){
|
||
var where = getObject(name, value);
|
||
return this.where(where).find();
|
||
},
|
||
/**
|
||
* SQL查询
|
||
* @return {[type]} [description]
|
||
*/
|
||
query: function(sql, parse){
|
||
if (parse !== undefined && !isBoolean(parse) && !isArray(parse)) {
|
||
parse = [].slice.call(arguments);
|
||
parse.shift();
|
||
};
|
||
var self = this;
|
||
return this.parseSql(sql, parse).then(function(sql){
|
||
return self.db.query(sql);
|
||
})
|
||
},
|
||
/**
|
||
* 执行SQL语法，非查询类的SQL语句，返回值为影响的行数
|
||
* @param {[type]} sql [description]
|
||
* @param {[type]} parse [description]
|
||
* @return {[type]} [description]
|
||
*/
|
||
execute: function(sql, parse){
|
||
if (parse !== undefined && !isBoolean(parse) && !isArray(parse)) {
|
||
parse = [].slice.call(arguments);
|
||
parse.shift();
|
||
};
|
||
var self = this;
|
||
return this.parseSql(sql, parse).then(function(sql){
|
||
return self.db.execute(sql);
|
||
})
|
||
},
|
||
/**
|
||
* 解析SQL语句
|
||
* @return promise [description]
|
||
*/
|
||
parseSql: function(sql, parse){
|
||
var promise = null;
|
||
var self = this;
|
||
if (parse === true) {
|
||
promise = this.parseOptions().then(function(options){
|
||
return self.db.parseSql(options);
|
||
})
|
||
}else{
|
||
parse = isArray(parse) ? parse : [parse];
|
||
parse.unshift(sql);
|
||
sql = util.format.apply(null, parse);
|
||
var map = {
|
||
"__TABLE__": this.getTableName(),
|
||
"__PREFIX__": C('db_prefix')
|
||
};
|
||
sql = sql.replace(/__[A-Z]+__/g, function(a){
|
||
return map[a] || a;
|
||
})
|
||
promise = getPromise(sql);
|
||
}
|
||
this.db.setModel(this.name);
|
||
return promise;
|
||
},
|
||
/**
|
||
* 设置数据对象值
|
||
* @return {[type]} [description]
|
||
*/
|
||
data: function(data){
|
||
if (data === true) {
|
||
return this._data;
|
||
};
|
||
if (isString(data)) {
|
||
data = querystring.parse(data);
|
||
};
|
||
this._data = data;
|
||
return this;
|
||
},
|
||
/**
|
||
* 设置操作选项
|
||
* @param {[type]} options [description]
|
||
* @return {[type]} [description]
|
||
*/
|
||
options: function(options){
|
||
if (options === true) {
|
||
return this._options;
|
||
};
|
||
this._options = options;
|
||
return this;
|
||
},
|
||
/**
|
||
* 关闭数据库连接
|
||
* @return {[type]} [description]
|
||
*/
|
||
close: function(){
|
||
delete dbInstances[this.linkNum];
|
||
delete dbConfigs[this.linkNum];
|
||
this.db && this.db.close();
|
||
}
|
||
}
|
||
}).extend(function(){
|
||
//追加的方法
|
||
var methods = {};
|
||
// 链操作方法列表
|
||
var methodNameList = [
|
||
'table','order','alias','having','group',
|
||
'lock','distinct','auto','filter','validate'
|
||
];
|
||
methodNameList.forEach(function(item){
|
||
methods[item] = function(data){
|
||
this._options[item] = data;
|
||
return this;
|
||
}
|
||
});
|
||
['count','sum','min','max','avg'].forEach(function(item){
|
||
methods[item] = function(data){
|
||
var field = data || "*";
|
||
return this.getField(item.toUpperCase() + "(" + field + ") AS thinkjs_" + item, true);
|
||
}
|
||
});
|
||
//方法别名
|
||
var aliasMethodMap = {
|
||
update: "save",
|
||
updateField: "setField",
|
||
updateInc: "setInc",
|
||
updateDec: "setDec"
|
||
};
|
||
Object.keys(aliasMethodMap).forEach(function(key){
|
||
var value = aliasMethodMap[key];
|
||
methods[value] = function(){
|
||
return this[key].apply(this, arguments);
|
||
}
|
||
})
|
||
return methods;
|
||
});
|
||
/**
|
||
* 关闭所有的数据库连接
|
||
* @return {[type]} [description]
|
||
*/
|
||
Model.close = function(){
|
||
dbInstances.forEach(function(db){
|
||
db.close();
|
||
});
|
||
dbInstances.length = 0;
|
||
dbConfigs.length = 0;
|
||
} |