mirror of
https://github.com/thinkjs/thinkjs.git
synced 2026-01-25 14:42:47 +00:00
1097 lines
37 KiB
JavaScript
1097 lines
37 KiB
JavaScript
var util = require('util');
|
||
var querystring = require('querystring');
|
||
|
||
//数据库实例化对象
|
||
var dbInstances = {};
|
||
//数据表的字段信息
|
||
var tableFields = {};
|
||
//db缓存数据
|
||
var dbCacheData = {};
|
||
|
||
/**
|
||
* Model类
|
||
* @type {[type]}
|
||
*/
|
||
var Model = module.exports = Class(function(){
|
||
"use strict";
|
||
//解析page参数
|
||
var parsePage = function(options){
|
||
if ("page" in options) {
|
||
var page = options.page + "";
|
||
var num = 0;
|
||
if (page.indexOf(",") > -1) {
|
||
page = page.split(",");
|
||
num = parseInt(page[1], 10);
|
||
page = page[0];
|
||
}
|
||
num = num || C('db_nums_per_page');
|
||
page = parseInt(page, 10) || 1;
|
||
return {
|
||
page: page,
|
||
num: num
|
||
};
|
||
}
|
||
return {
|
||
page: 1,
|
||
num: C('db_nums_per_page')
|
||
};
|
||
};
|
||
/**
|
||
* 字符串命名风格转换
|
||
* @param {[type]} name [description]
|
||
* @param {[type]} type [description]
|
||
* @return {[type]} [description]
|
||
*/
|
||
var parseName = function(name, type){
|
||
name = (name + "").trim();
|
||
if (type) {
|
||
name = name.replace(/_([a-zA-Z])/g, function(a, b){
|
||
return b.toUpperCase();
|
||
});
|
||
return name.substr(0, 1).toUpperCase() + name.substr(1);
|
||
} else {
|
||
//首字母如果是大写，不转义为_x
|
||
if (name.length >= 1) {
|
||
name = name.substr(0, 1).toLowerCase() + name.substr(1);
|
||
}
|
||
return name.replace(/[A-Z]/g, function(a){
|
||
return "_" + a;
|
||
}).toLowerCase();
|
||
}
|
||
};
|
||
|
||
return {
|
||
initAttr: function(){
|
||
// 当前数据库操作对象
|
||
this.db = null;
|
||
// 主键名称
|
||
this.pk = "id";
|
||
// 数据库连接序号
|
||
this.linkNum = 0;
|
||
// 数据表前缀
|
||
this.tablePrefix = "";
|
||
// 模型名称
|
||
this.name = "";
|
||
// 数据库名称
|
||
this.dbName = "";
|
||
// 数据库配置
|
||
this.connection = "";
|
||
// 数据表名（不包含表前缀）
|
||
this.tableName = "";
|
||
// 实际数据表名（包含表前缀）
|
||
this.trueTableName = "";
|
||
// 字段信息
|
||
this.fields = {};
|
||
// 数据信息
|
||
this._data = {};
|
||
// 参数
|
||
this._options = {};
|
||
// 是否自动检测数据表字段信息
|
||
this.autoCheckFields = true;
|
||
// 初始化的promise
|
||
this.promise = null;
|
||
},
|
||
/**
|
||
* 取得DB类的实例对象 字段检查
|
||
* @access public
|
||
* @param string $name 模型名称
|
||
* @param string $tablePrefix 表前缀
|
||
* @param mixed $connection 数据库连接信息
|
||
*/
|
||
init: function(name, tablePrefix, config){
|
||
this.initAttr();
|
||
// 获取模型名称
|
||
if (name) {
|
||
if (name.indexOf(".") > -1) {
|
||
name = name.split(".");
|
||
this.dbName = name[0];
|
||
this.name = name[1];
|
||
}else{
|
||
this.name = name;
|
||
}
|
||
}else if(!this.name){
|
||
this.getModelName();
|
||
}
|
||
if (!isString(tablePrefix)) {
|
||
config = tablePrefix;
|
||
tablePrefix = undefined;
|
||
}
|
||
this.config = config || "";
|
||
//设置数据表前缀
|
||
if (tablePrefix || this.config.db_prefix) {
|
||
this.tablePrefix = tablePrefix || this.config.db_prefix;
|
||
}else{
|
||
if (!this.tablePrefix) {
|
||
this.tablePrefix = C("db_prefix");
|
||
}
|
||
}
|
||
//子类的init方法
|
||
if (this._init) {
|
||
this._init();
|
||
}
|
||
},
|
||
/**
|
||
* 初始化数据库连接的promise
|
||
* @return {[type]} [description]
|
||
*/
|
||
initPromise: function(){
|
||
if (this.promise) {
|
||
return this.promise;
|
||
}
|
||
this.promise = this.initDb();
|
||
return this.promise;
|
||
},
|
||
/**
|
||
* 初始化数据库连接
|
||
* @access public
|
||
* @param integer $linkNum 连接序号
|
||
* @param mixed $config 数据库连接信息
|
||
* @param array $params 模型参数
|
||
* @return Model
|
||
*/
|
||
initDb: function(){
|
||
if (this.db) {
|
||
return getPromise(this.db);
|
||
}
|
||
var config = this.config || "";
|
||
var md5Value = md5(JSON.stringify(config));
|
||
if (!dbInstances[md5Value]) {
|
||
if (config && isString(config) && config.indexOf('/') === -1) {
|
||
config = C(config);
|
||
}
|
||
dbInstances[md5Value] = thinkRequire("Db").getInstance(config);
|
||
}
|
||
this.db = dbInstances[md5Value];
|
||
if (this.name && this.autoCheckFields) {
|
||
return this.checkTableInfo();
|
||
}
|
||
return getPromise(this);
|
||
},
|
||
/**
|
||
* 获取模型名
|
||
* @access public
|
||
* @return string
|
||
*/
|
||
getModelName: function(){
|
||
if (this.name) {
|
||
return this.name;
|
||
}
|
||
var filename = this.__filename || __filename;
|
||
var name = filename.split("/").pop();
|
||
this.name = name.substr(0, name.length - 8);
|
||
return this.name;
|
||
},
|
||
/**
|
||
* 获取表名
|
||
* @return {[type]} [description]
|
||
*/
|
||
getTableName: function(){
|
||
var tableName;
|
||
if (!this.trueTableName) {
|
||
tableName = this.tablePrefix || "";
|
||
tableName += this.tableName || parseName(this.getModelName());
|
||
this.trueTableName = tableName.toLowerCase();
|
||
}
|
||
tableName = (this.dbName ? this.dbName + "." : "") + this.trueTableName;
|
||
return tableName;
|
||
},
|
||
/**
|
||
* 自动检测数据表信息
|
||
* @access protected
|
||
* @return void
|
||
*/
|
||
checkTableInfo: function(){
|
||
if (isEmpty(this.fields)) {
|
||
if (C('db_fields_cache')) {
|
||
var fields = tableFields[this.getTableName()];
|
||
if (fields) {
|
||
this.fields = fields;
|
||
return getPromise(fields);
|
||
}
|
||
}
|
||
// 每次都会读取数据表信息
|
||
return this.flushFields();
|
||
}
|
||
return getPromise(this.fields);
|
||
},
|
||
/**
|
||
* 刷新数据表字段信息
|
||
* @return promise [description]
|
||
*/
|
||
flushFields: function(){
|
||
this.db.setModel(this.name);
|
||
var self = this;
|
||
return this.getTableFields(this.getTableName(), true).then(function(fields){
|
||
self.fields = fields;
|
||
if (C('db_fields_cache')) {
|
||
tableFields[self.getTableName()] = fields;
|
||
}
|
||
return fields;
|
||
});
|
||
},
|
||
/**
|
||
* 获取数据表的字段
|
||
* @param {[type]} table
|
||
* @param {[type]} all
|
||
* @return {[type]}
|
||
*/
|
||
getTableFields: function(table, all){
|
||
if (table === true) {
|
||
table = undefined;
|
||
all = true;
|
||
}
|
||
if (table) {
|
||
return this.db.getFields(table).then(function(data){
|
||
var fields = {
|
||
"_field": Object.keys(data || {}),
|
||
"_autoinc": false,
|
||
"_unique": []
|
||
};
|
||
var types = {};
|
||
for(var key in data){
|
||
var val = data[key];
|
||
types[key] = val.type;
|
||
if (val.primary) {
|
||
fields._pk = key;
|
||
if (val.autoinc) {
|
||
fields._autoinc = true;
|
||
}
|
||
}else if (val.unique) {
|
||
fields._unique.push(key);
|
||
}
|
||
}
|
||
fields._type = types;
|
||
return all ? fields : fields._field;
|
||
});
|
||
}
|
||
if (!isEmpty(this.fields)) {
|
||
return getPromise(all ? this.fields : this.fields._field);
|
||
}
|
||
return this.getTableFields(this.getTableName(), all);
|
||
},
|
||
/**
|
||
* 获取类型为唯一的字段
|
||
* @return {[type]} [description]
|
||
*/
|
||
getUniqueField: function(data){
|
||
var unqiueFileds = this.fields._unique;
|
||
var unqiue = "";
|
||
unqiueFileds.some(function(item){
|
||
if (!data || data[item]) {
|
||
unqiue = item;
|
||
return unqiue;
|
||
}
|
||
});
|
||
return unqiue;
|
||
},
|
||
/**
|
||
* 获取上一次操作的sql
|
||
* @return {[type]} [description]
|
||
*/
|
||
getLastSql: function(){
|
||
return this.db.getLastSql();
|
||
},
|
||
/**
|
||
* 获取主键名称
|
||
* @access public
|
||
* @return string
|
||
*/
|
||
getPk: function(){
|
||
return this.fields._pk || this.pk;
|
||
},
|
||
/**
|
||
* 缓存
|
||
* @param {[type]} key [description]
|
||
* @param {[type]} expire [description]
|
||
* @param {[type]} type [description]
|
||
* @return {[type]} [description]
|
||
*/
|
||
cache: function(key, timeout){
|
||
if (key === undefined) {
|
||
return this;
|
||
}
|
||
var options = this.getCacheOptions(key, timeout);
|
||
this._options.cache = options;
|
||
return this;
|
||
},
|
||
/**
|
||
* 获取缓存的选项
|
||
* @param {[type]} key [description]
|
||
* @param {[type]} timeout [description]
|
||
* @return {[type]} [description]
|
||
*/
|
||
getCacheOptions: function(key, timeout, type){
|
||
if (isObject(key)) {
|
||
return key;
|
||
}
|
||
if (isNumber(key)) {
|
||
timeout = key;
|
||
key = "";
|
||
}
|
||
var cacheType = type === undefined ? C('db_cache_type') : type;
|
||
var options = {
|
||
key: key,
|
||
timeout: timeout || C('db_cache_timeout'),
|
||
type: cacheType,
|
||
gcType: "dbCache"
|
||
}
|
||
if (cacheType === 'File') {
|
||
options.cache_path = C('db_cache_path');
|
||
}else{
|
||
options.cacheData = dbCacheData;
|
||
}
|
||
return options;
|
||
},
|
||
/**
|
||
* 指定查询数量
|
||
* @param {[type]} offset [description]
|
||
* @param {[type]} length [description]
|
||
* @return {[type]} [description]
|
||
*/
|
||
limit: function(offset, length){
|
||
this._options.limit = length === undefined ? offset : offset + "," + length;
|
||
return this;
|
||
},
|
||
/**
|
||
* 指定分页
|
||
* @return {[type]} [description]
|
||
*/
|
||
page: function(page, listRows){
|
||
this._options.page = listRows === undefined ? page : page + "," + listRows;
|
||
return this;
|
||
},
|
||
/**
|
||
* where条件
|
||
* @return {[type]} [description]
|
||
*/
|
||
where: function(where){
|
||
if (where && isString(where)) {
|
||
where = {_string: where};
|
||
}
|
||
this._options.where = extend(this._options.where || {}, where);
|
||
return this;
|
||
},
|
||
/**
|
||
* 要查询的字段
|
||
* @param {[type]} field [description]
|
||
* @param {[type]} reverse [description]
|
||
* @return {[type]} [description]
|
||
*/
|
||
field: function(field, reverse){
|
||
if (isArray(field)) {
|
||
field = field.join(",");
|
||
}else if (!field) {
|
||
field = "*";
|
||
}
|
||
this._options.field = field;
|
||
this._options.fieldReverse = reverse;
|
||
return this;
|
||
},
|
||
/**
|
||
* 联合查询
|
||
* @return {[type]} [description]
|
||
*/
|
||
union: function(union){
|
||
if (!this._options.union) {
|
||
this._options.union = [];
|
||
}
|
||
this._options.union.push(union);
|
||
return this;
|
||
},
|
||
/**
|
||
* 联合查询
|
||
* @param {[type]} join [description]
|
||
* @return {[type]} [description]
|
||
*/
|
||
join: function(join){
|
||
if (isArray(join)) {
|
||
this._options.join = join;
|
||
}else{
|
||
if (!this._options.join) {
|
||
this._options.join = [];
|
||
}
|
||
this._options.join.push(join);
|
||
}
|
||
return this;
|
||
},
|
||
/**
|
||
* 生成查询SQL 可用于子查询
|
||
* @param {[type]} options [description]
|
||
* @return {[type]} [description]
|
||
*/
|
||
buildSql: function(options){
|
||
var self = this;
|
||
return this.parseOptions(options).then(function(options){
|
||
return "( " + self.db.buildSelectSql(options) + " )";
|
||
});
|
||
},
|
||
/**
|
||
* 解析参数，在this.promise后执行
|
||
* @param {[type]} options [description]
|
||
* @return promise [description]
|
||
*/
|
||
parseOptions: function(options, extraOptions){
|
||
var self = this;
|
||
options = this.parseWhereOptions(options);
|
||
options = extend(this._options, options, extraOptions);
|
||
// 查询过后清空sql表达式组装 避免影响下次查询
|
||
this._options = {};
|
||
var promise = null;
|
||
//获取数据表下的字段信息
|
||
if (options.table) {
|
||
promise = this.getTableFields(options.table);
|
||
}else{
|
||
options.table = this.getTableName();
|
||
if (isEmpty(self.fields._field)) {
|
||
promise = this.initPromise().then(function(){
|
||
return self.fields._field;
|
||
});
|
||
}else{
|
||
promise = getPromise(self.fields._field);
|
||
}
|
||
}
|
||
//数据表别名
|
||
if (options.alias) {
|
||
options.table += " " + options.alias;
|
||
}
|
||
options.model = this.name;
|
||
return promise.then(function(fields){
|
||
// 字段类型验证
|
||
if (options.where && isObject(options.where) && !isEmpty(fields)) {
|
||
// 对数组查询条件进行字段类型检查
|
||
for(var key in options.where){
|
||
var val = options.where[key];
|
||
key = key.trim();
|
||
if (fields.indexOf(key) > -1) {
|
||
if (isScalar(val)) {
|
||
options.where = self.parseType(options.where, key);
|
||
}
|
||
}else if(key.substr(0, 1) !== "_" && !(/[\.\|\&]/.test(key))){
|
||
delete options.where[key];
|
||
}
|
||
}
|
||
}
|
||
//field反选
|
||
if (options.field && options.fieldReverse) {
|
||
var optionsField = options.field.split(',');
|
||
options.field = fields.filter(function(item){
|
||
if (optionsField.indexOf(item) > -1) {
|
||
return;
|
||
}
|
||
return item;
|
||
}).join(',');
|
||
}
|
||
options = self._optionsFilter(options, fields);
|
||
return options;
|
||
});
|
||
},
|
||
/**
|
||
* 选项过滤器
|
||
* 具体的Model类里进行实现
|
||
* @param {[type]} options [description]
|
||
* @return {[type]} [description]
|
||
*/
|
||
_optionsFilter: function(options){
|
||
return options;
|
||
},
|
||
/**
|
||
* 数据类型检测
|
||
* @param {[type]} data [description]
|
||
* @param {[type]} key [description]
|
||
* @return {[type]} [description]
|
||
*/
|
||
parseType: function(data, key){
|
||
var fieldType = this.fields._type[key] || "";
|
||
if (fieldType.indexOf("bigint") === -1 && fieldType.indexOf("int") > -1) {
|
||
data[key] = parseInt(data[key], 10) || 0;
|
||
}else if(fieldType.indexOf("double") > -1 || fieldType.indexOf("float") > -1){
|
||
data[key] = parseFloat(data[key]) || 0.0;
|
||
}else if(fieldType.indexOf('bool') > -1){
|
||
data[key] = !! data[key];
|
||
}
|
||
return data;
|
||
},
|
||
/**
|
||
* 对插入到数据库中的数据进行处理，要在parseOptions后执行
|
||
* @param {[type]} data [description]
|
||
* @return {[type]} [description]
|
||
*/
|
||
parseData: function(data){
|
||
data = extend({}, data);
|
||
var key;
|
||
if (!isEmpty(this.fields)) {
|
||
for(key in data){
|
||
var val = data[key];
|
||
if (this.fields._field.indexOf(key) === -1) {
|
||
delete data[key];
|
||
}else if(isScalar(val)){
|
||
data = this.parseType(data, key);
|
||
}
|
||
}
|
||
}
|
||
//安全过滤
|
||
if (typeof this._options.filter === 'function') {
|
||
for(key in data){
|
||
data[key] = this._options.filter.call(this, key, data[key]);
|
||
}
|
||
delete this._options.filter;
|
||
}
|
||
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;
|
||
},
|
||
/**
|
||
* 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){
|
||
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){
|
||
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()];
|
||
});
|
||
},
|
||
/**
|
||
* 如果当前条件的数据不存在，才添加
|
||
* @param {[type]} data 要插入的数据
|
||
* @param {[type]} where where条件
|
||
* @param boolean returnType 返回值是否包含type
|
||
* @return {[type]} promise
|
||
*/
|
||
thenAdd: function(data, where, returnType){
|
||
this.where(where);
|
||
var self = this;
|
||
return this.find().then(function(findData){
|
||
if (!isEmpty(findData)) {
|
||
var idValue = findData[self.getPk()];
|
||
return returnType ? getObject([self.getPk(), 'type'], [idValue, 'exist']) : idValue;
|
||
}
|
||
return self.add(data).then(function(insertId){
|
||
return returnType ? getObject([self.getPk(), 'type'], [insertId, 'add']) : insertId;
|
||
});
|
||
});
|
||
},
|
||
/**
|
||
* 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){
|
||
return data;
|
||
},
|
||
/**
|
||
* 删除数据
|
||
* @return {[type]} [description]
|
||
*/
|
||
delete: function(options){
|
||
var self = this;
|
||
var parsedOptions = {};
|
||
var affectedRows = 0;
|
||
return this.parseOptions(options).then(function(options){
|
||
parsedOptions = options;
|
||
return self.db.delete(options);
|
||
}).then(function(rows){
|
||
affectedRows = rows;
|
||
return self._afterDelete(parsedOptions.where || {}, parsedOptions);
|
||
}).then(function(){
|
||
return affectedRows;
|
||
})
|
||
},
|
||
/**
|
||
* 更新前置操作
|
||
* @param {[type]} data [description]
|
||
* @param {[type]} options [description]
|
||
* @return {[type]} [description]
|
||
*/
|
||
_beforeUpdate: function(data){
|
||
return data;
|
||
},
|
||
/**
|
||
* 更新后置操作
|
||
* @param {[type]} data [description]
|
||
* @param {[type]} options [description]
|
||
* @return {[type]} [description]
|
||
*/
|
||
_afterUpdate: function(data){
|
||
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)) {
|
||
// 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(rows){
|
||
affectedRows = rows;
|
||
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 self = this;
|
||
var promises = dataList.map(function(data){
|
||
return 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){
|
||
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){
|
||
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);
|
||
});
|
||
},
|
||
/**
|
||
* 返回数据里含有count信息的查询
|
||
* @param options 查询选项
|
||
* @param pageFlag 当页面不合法时的处理方式，true为获取第一页，false为获取最后一页，undefined获取为空
|
||
* @return promise
|
||
*/
|
||
countSelect: function(options, pageFlag){
|
||
if (isBoolean(options)) {
|
||
pageFlag = options;
|
||
options = {};
|
||
}
|
||
var self = this;
|
||
//解析后的options
|
||
var parsedOptions = {};
|
||
var result = {};
|
||
return this.parseOptions(options).then(function(options){
|
||
delete options.table;
|
||
parsedOptions = options;
|
||
return self.options({
|
||
where: options.where,
|
||
cache: options.cache,
|
||
join: options.join
|
||
}).count(self.getTableName() + '.' + self.getPk());
|
||
}).then(function(count){
|
||
var pageOptions = parsePage(parsedOptions);
|
||
var totalPage = Math.ceil(count / pageOptions.num);
|
||
if (isBoolean(pageFlag)) {
|
||
if (pageOptions.page > totalPage) {
|
||
pageOptions.page = pageFlag === true ? 1 : totalPage;
|
||
}
|
||
parsedOptions.page = pageOptions.page + ',' + pageOptions.num;
|
||
}
|
||
result = extend({count: count, total: totalPage}, pageOptions);
|
||
return self.select(parsedOptions);
|
||
}).then(function(data){
|
||
result.data = data;
|
||
return result;
|
||
});
|
||
},
|
||
/**
|
||
* 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;
|
||
var parseOptions;
|
||
return this.parseOptions({
|
||
"field": field
|
||
}).then(function(options){
|
||
parseOptions = 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;
|
||
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 && parseOptions.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{
|
||
if (parse === undefined) {
|
||
parse = [];
|
||
}else{
|
||
parse = isArray(parse) ? parse : [parse];
|
||
}
|
||
parse.unshift(sql);
|
||
sql = util.format.apply(null, parse);
|
||
var map = {
|
||
"__TABLE__": '`' + this.getTableName() + '`'
|
||
};
|
||
sql = sql.replace(/__([A-Z]+)__/g, function(a, b){
|
||
return map[a] || ('`' + C('db_prefix') + b.toLowerCase() + '`');
|
||
});
|
||
promise = getPromise(sql);
|
||
}
|
||
return this.initPromise().then(function(){
|
||
self.db.setModel(self.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];
|
||
if (this.db) {
|
||
this.db.close();
|
||
}
|
||
}
|
||
};
|
||
}).extend(function(){
|
||
"use strict";
|
||
//追加的方法
|
||
var methods = {};
|
||
// 链操作方法列表
|
||
var methodNameList = [
|
||
'table','order','alias','having','group',
|
||
'lock','auto','filter','validate'
|
||
];
|
||
methodNameList.forEach(function(item){
|
||
methods[item] = function(data){
|
||
this._options[item] = data;
|
||
return this;
|
||
};
|
||
});
|
||
methods.distinct = function(data){
|
||
this._options.distinct = data;
|
||
//如果传过来一个字段，则映射到field上
|
||
if (isString(data)) {
|
||
this._options.field = 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 = global.closeDb = function(){
|
||
"use strict";
|
||
dbInstances.forEach(function(db){
|
||
db.close();
|
||
});
|
||
dbInstances.length = 0;
|
||
}; |