function RowSet(json)
{
	var BUFFER_PRIMARY = "primary";
	
	var BUFFER_DELETE = "delete";
	
	this._name = "";
	
	this._className = null;
	
	this._type = "";
	
	this._recordCount = 0;
	
	this._countSql = ""; // 统计记录数的sql语句
	
	this._currentPage = 0;
	
	this._countSqlParamValues = "";
	
	this._rowCount = 0;
	
	this._data = json || {};
	
	this._metaData = {};//表单元数据
	
	this._queryRowSetName = null;//查询表单对应的rowSet名字
	
	this._init = function()
	{
		if(json == null)
			return;
		if(json["name"] != null)
		{
			this._name = json["name"];
		}
		if(json["classname"] != null)
		{
			this._className = json["classname"];
		}
		if(json["type"] != null)
		{
			this._type = json["type"];
		}
		if(json["recordCount"] != null)
		{
			this._recordCount = json["total"];
		}
		if(json["total"] != null)
		{
			this._rowCount = json["recordCount"];
		}
		
		if(json["currentPage"]!=null)
		{
			this._currentPage = json["pageNum"];
		}
		
		if(json["countSql"]!=null)
		{
			this._countSql = json["countSql"];
		}
		
		if(json["countSqlParamValues"]!=null)
		{
			this._countSqlParamValues = json["countSqlParamValues"];
		}
		
		if(json["metadata"] != null)
		{
			this._metaData = json["metadata"];
		}
		if(this._data["delete"] == null)
		{
			this._data["delete"] = [];			
		}
		if(this._data["rows"] == null)
		{
			this._data["rows"] = [];
		}
		if(this._data["queryRowSetName"] == null)
		{
			this._queryRowSetName = this._data["queryRowSetName"];
		}		
	}
	
	this.getMetaData = function()
	{
		return this._metaData;
	}
	
	this.setQueryRowSetName = function(name)
	{
		this._queryRowSetName = name
		this._data["queryRowSetName"] = name;
	}
	
	this.getName = function()
	{
		return this._name;
	}
	
	this.setName = function(name)
	{
		this._name = name
	}
	
	this._getBuffer = function(buffer)
	{
		if (BUFFER_PRIMARY == buffer || buffer == null)
		{
			return this._data["rows"];
		}
		else
		{
			return this._data["delete"];
		}
	}
	
	this.getRowCount = function(buffer)
	{
		return this._getBuffer(buffer).length;
	}
	
	this.addRow = function(data)
	{
		var data = data || {};
		var row = new Row(data);
		this._getBuffer(null).push(data);
		return row;
	}
	
	this.addRows = function(datas)
	{
		for(var i=0,count = datas.length;i < count;i++)
		{
			this._getBuffer(null).push(datas[i]);
		}		
	}
	
	this.deleteRow = function(index)
	{
		this._getBuffer(null).splice(index,1);
	}
	
	this.resetUpdate = function()
	{
		this._deleteBuffer = [];		
	}
	
	this.getRow = function(index)
	{
		return new Row(this._getBuffer(null)[index]);
	}
	
	this.getItemValue = function(index,columnName)
	{
		return new Row(this._getBuffer(null)[index]).getItemValue(columnName);
	}
	
	this.setItemValue = function(index,columnName,value)
	{
		new Row(this._getBuffer(null)[index]).setItemValue(columnName,value);
	}
	
	this.getPrimaryData = function()
	{	
		return this._data["rows"];
	}
	
	this.setDeleteData = function(data)
	{
		this._data["delete"] = data;
	}
	
	this.setStatues = function(listData,statuesData)
	{
		for(var i=0,count = listData.length; i < count;i++)
		{
			if(listData[i]["_sys_status"] == null)
			{
				listData[i]["_sys_status"] = {};
			}
			listData[i]["_sys_status"]["status"] = statuesData
		}
	}
	
	this.getData = function()
	{		
		this._data["recordCount"] = this._recordCount;
		this._data["total"] = this._rowCount;	
		
		this._data["countSql"] = this._countSql;
		this._data["currentPage"] = this._currentPage;	
		this._data["countSqlParamValues"] = this._countSqlParamValues;		
		////////////////////////////////////////////////////////	
		return this._data;
	}
	
	this.getRecordCount = function()
	{
		return this._recordCount;
	}
	
	this.setPageSize = function(pageSize)
	{
		this._data["pageSize"] = pageSize;
	}
	
	this.getPageSize = function()
	{
		return this._data["pageSize"];
	}
	
	this.setPageNum = function(pageNum)
	{
		this._data["pageNum"] = pageNum;
	}
	
	this.getPageNum = function()
	{
		this._data["pageNum"];
	}
	
	this.setSort = function(sort)
	{
		this._data["sort"] = sort;
	}
	
	/**
	 * 复制一个干净的对象
	 */
	this.copy = function()
	{
		var obj = {};
		obj["name"] = this._name;
		if(this._className != null)
		{
			obj["classname"] = this._className;
		}		
		obj["type"] = this._type;
		obj["rows"] = [];
		obj["delete"] = [];
		obj["pageSize"] = this._data["pageSize"];
		obj["pageNum"] = this._data["pageNum"];
		obj["countSql"] = this._data["countSql"];
		obj["countSqlParamValues"] = this._data["countSqlParamValues"];
		obj["queryRowSetName"] = this._queryRowSetName; 
		return new RowSet(obj);
	}
	
	this._init();
}