Re: [aspectj-users] String Trimming anyone???

[Alexandru Popescu <the.mindstorm.mailinglist@xxxxxxxxx>]

#: Ron DiFrango changed the world a bit at a time by saying on  9/15/2005 10:44 PM :#
> It seems to manipulate the hashCode:
>  
> Before[Ron's Aspect Company ]
>
> Before[292824200]
>
> After[Ron's Aspect Company]
>
> After[-2000128872]
>
> {Ron's Aspect Company }
>
>  

But as you can see you just created another object ;-).

:alex |.::the_mindstorm::.|

> Any other thoughts....
>
> 	-----Original Message----- 
> 	From: Alexandru Popescu [mailto:the.mindstorm.mailinglist@xxxxxxxxx] 
> 	Sent: Thu 9/15/2005 5:34 PM 
> 	To: aspectj-users@xxxxxxxxxxx 
> 	Cc: 
> 	Subject: Re: [aspectj-users] String Trimming anyone???
> 	
> 	
>
> 	#: Ron DiFrango changed the world a bit at a time by saying on  9/15/2005 10:27 PM :#
> 	> All,
> 	> 
> 	> I am working with a database [DB2] where the fields are padded with spaces and I want to strip them on when I set the values in my DTO.  So I created the following aspect:
> 	> 
> 	> privileged aspect CaptureStringSets {
> 	>  before(String val): set(* dto..*.*) && args(val) {
> 	>         System.out.println("Before[" + val + "]");
> 	>         val = val.trim();
> 	>         System.out.println("After[" + val + "]");
> 	>     }
> 	> }
> 	> 
> 	> Test Program:
> 	> 
> 	> public class TestDBUtils {
> 	>  public static void main(String[] args) {
> 	>   // TODO Auto-generated method stub
> 	>   ApproveHeaderTO to = new ApproveHeaderTO();
> 	>   to.setVendorName("Ron's Aspect Company       ");
> 	>   System.out.println("{" + to.getVendorName() + "}");
> 	>  }
> 	> }
> 	> 
> 	> It properly captrues the join points, but the output is as follows:
> 	> 
> 	> Before[Ron's Aspect Company ]
> 	> After[Ron's Aspect Company]
> 	> {Ron's Aspect Company }
> 	>
> 	> I am wondering why the change to the String is not taking affect, it is like a pass by value/reference thing, but I am not sure why.  Anyone else create such a monster? 
> 	>
> 	> BTW I thnk this would be a good re-usable aspect if we can get it working.
> 	>
> 	> Ron
> 	>
> 	
> 	Not sure why this is may happen, but try watching if the same string instance is manipulated (print
> 	some hashCode()).
> 	
> 	:alex |.::the_mindstorm::.|
> 	
> 	>
> 	>
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