thanks for all your reply, since all these classes have main entry in cron.php, I have moved validation there. Richard, your solution seems interesting, maybe I can use it later :) On Thu, Apr 15, 2010 at 4:46 AM, Richard Quadling <rquadling@xxxxxxxxxxxxxx> wrote: > On 13 April 2010 17:25, Ryan Sun <ryansun81@xxxxxxxxx> wrote: >> this is a class for corntab job, and the validation is very simple, >> just check if the status of user is active when cron job runs, if not, >> throws an exception, other developers won't want to overwrite this >> validation. >> which method of user class will be called is configurable via website >> backed page(we write the name of methods directly in to schedule >> table). >> Using private methods will solve the problem but since we write public >> methods for all the other cron classes, I just want to keep the style >> to make less confusion. >> >> On Tue, Apr 13, 2010 at 12:11 PM, Nathan Rixham <nrixham@xxxxxxxxx> wrote: >>> Ryan Sun wrote: >>>> I'm writing an abstract parent class which only contain a validate >>>> method, other developers will extend this class and add many new >>>> public methods, every new methods will need to perform a validate >>>> first. Won't it be good if validate get called automatically before >>>> every method call so that they don't have to write more code and they >>>> won't miss this validate? >>> >>> This may call for a back to roots approach, what exactly are you trying >>> to accomplish, as in: what is the validation doing? >>> >>> perhaps if we see the full picture, we can recommend another perhaps >>> more suited approach to the full thing, feel free to post the full code >>> if you want / can, the more info the better! >>> >>> Regards, >>> >>> Nathan >>> >> >> -- >> PHP General Mailing List (http://www.php.net/) >> To unsubscribe, visit: http://www.php.net/unsub.php >> >> > > Would this be better ... > > abstract class baseValidate() { > final public function __construct($params) { > // Determine if user is active. > // If OK, then call abstract function postConstruct($params) > } > > abstract function postConstruct($params); > } > > > You can't override the constructor, so the validation will always be > called. The developer's can implement their own postConstruct as if > they where extending __construct. > > > > -- > ----- > Richard Quadling > "Standing on the shoulders of some very clever giants!" > EE : http://www.experts-exchange.com/M_248814.html > EE4Free : http://www.experts-exchange.com/becomeAnExpert.jsp > Zend Certified Engineer : http://zend.com/zce.php?c=ZEND002498&r=213474731 > ZOPA : http://uk.zopa.com/member/RQuadling > -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
