/**
 * The equivalent of a SQL multi statement.
 **/
Sql.MultiStmt = new Class
({
	Extends: Sql.Stmt

	,stmts: []

	,addStmt: function (stmt)
	{
		stmt.on ('changed', this.stmtChanged.bind (this));
		return this.stmts.push (stmt);
	}
	
	,stmtChanged: function ()
	{
		this.signalEmit ('changed');
	}

	,isReady: function ()
	{
		if (this.stmts.length == 0)
			return false;
	
		for (var i = 0; i < this.stmts.length; i++)
			if (!this.stmts[i].isReady ())
				return false;
				
		return true;
	}

	,render: function (batch)
	{
		var sql = '';

		for (var i = 0; i < this.stmts.length; i++)
			sql += this.stmts[i].render (batch) + '; ';

		return sql;
	}
});