var Object = require ('./object');
var Expr = require ('./expr');

/**
 * The equivalent of a SQL statement.
 */
module.exports = new Class
({
	Extends: Object
	,Properties:
	{
		where:
		{
			type: Expr
			,value: null
		},
		limit:
		{
			type: Number
			,value: null
		}
	}

	,target: []

	,addTarget: function (target)
	{
		this.target.push (target);
	}

	,renderTarget: function (params)
	{
		if (this.target.length > 0)
			return ' '+ this.renderListWs (this.target, params, ', ');
		else
			return ' DUAL';
	}
	
	,renderLimit: function ()
	{
		if (this.limit != null)
			return ' LIMIT '+ parseInt (this.limit);
		else
			return '';
	}
});