function filterCache(config){
	var _default = [{
		name: 'ssmc',
		isNeed: true,
		isNeedAll: false
	},{
		name: 'zsnf',
		isNeed: true
	},{
		name: 'klmc',
		isNeed: true,
		isNeedAll: false
	},{
		name: 'sex',
		isNeed: true,
		isNeedAll: false
	},{
		name: 'campus',
		isNeed: true,
		isNeedAll: false
	},{
		name: 'zslx',
		isNeed: true,
		isNeedAll: false
	}];
	this.cache = {};
	this.data = null;
	config = config || [];
	this.config = $.extend([],_default,config);
}
/**
  *初始化数据
  */
filterCache.prototype._initData = function(){
	var table = {};
	var config = this.config;
	if( this.data != null && this.data.list != null ){
		this.cache.ssmcList = [];
		var $cache = this.cache;
		this.data.list.forEach(function(items,index){
			for(var key in items){
				var params = key.split('_');
				var lastArr = items[key];
				lastArr.forEach(function(lastParam){
					var obj = {};
					var i = 0;
					var firstParam  = null;
					for(var key in params){
						i = key;
						if(key == 0){
							firstParam = params[key];
						}else{
							var item_config = config[key];
							obj[item_config['name']] = params[key];
							if(!item_config['isNeed']){
								obj[item_config['name']] = '';
							}
						}
					}
					var last_item_config = config[++i];
					obj[last_item_config['name']] = lastParam;
					if(!last_item_config['isNeed']){
						obj[last_item_config['name']] = '';
					}
					if( table[firstParam] == null ){
						$cache.ssmcList.push(firstParam);
						table[firstParam] = [];
					}
					table[firstParam].push(obj);
				});
			}
		});
		this.cache.table = table;
		console.log(this.cache);
	}
}
/**
  *添加数据
  */
filterCache.prototype.add = function(data){
	this.data = data;
	this._initData();
	this.data = null;
	this._getSub();
}
/**
  *修改配置文件
  */
filterCache.prototype.changeConfig = function(config){
	config = config||[];
	this.config = $.extend([],this.config,config);
}
/**
  *根据菜单获取数据
  */
filterCache.prototype._getSub = function(params){
	if( params == null ){
		return false;
	}
	var config = this.config;
	var table = this.cache.table;
	var needTable = [];
	if( params[0] == '_filter_all' ){
		this.cache.ssmcList.forEach(function(ssmc){
			var items = table[ssmc]||[];
			items.forEach(function(item){
				item.ssmc = ssmc;
				needTable.push(item);
			});
		});
	}else{
		needTable = table[params[0]]||[];
	}
	var list = needTable.filter(function(item){
		for( var key = 0; key < params.length; key++ ){
			var param = params[key];
			if( key!=0 && param!="" && param!='_filter_all' ){
				if( item[config[key]['name']] != param ){
					return false;
				}
			}
		}
		return true;
	});
	var name = config[params.length]['name'];
	var json = {};
	list.forEach(function(item,key){
		if(json[item[name]] == null){
			json[item[name]] = key;
		}
	});
	return json_to_array(json_key_val_reverse(json));
}
/**
  *获取数据
  */
filterCache.prototype.get = function(params){
	var config = this.config;
	var ssmcList = this.cache.ssmcList
	var table = this.cache.table;
	if( params == null ){
		params = ["","","","","",""];
		if(config[0]['isNeedAll']){
			params[0] = '_filter_all';
		}else{
			params[0] = this.cache.ssmcList[0];
		};
	}
	var subParams = [];
	var list = [];
	list[0] = ssmcList;
	var _this = this;
	for(var key = 0; key < config.length; key++ ){
		var item = config[key];
		var lastArr = list[list.length-1];
		var param = lastArr[0]||'';
		if( item.isNeedAll ){
			param = '_filter_all';
		}
		for(var k=0 ; k < lastArr.length; k++){
			if(lastArr[k] == params[key]){
				param = params[key]
				break;
			}
		}
		subParams.push(param);
		if(config[key+1]!=null&&!config[key+1].isNeed){
			list.push([]);
		}else{
			if( key < config.length-1 ){
				list.push(_this._getSub(subParams));
			}
		}
	}
	return {
		list: list,
		params: subParams
	};
};
function json_key_val_reverse(json){
	var n = {};
	for(var key in json){
		n[json[key]] = key;
	}
	return n;
}
function json_to_array(json){
	var arr = [];
	for(var key in json){
		arr.push(json[key])
	}
	return arr;
}