Design paterns for null arguments

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Design paterns for null arguments

Design paterns for null arguments

2004-05-28 - By Sandeep Kachalia

Back

Reply: 1 2 3 4 5 6 7 8

Thanks Ben,
I wanted to open APIs for my client. The API users may pass null values
as arguments.
I have n number of parameters against I need to do null verification.
Can we apply some pattern here through which we check the nullability
and give customerized messages to user.

e.g.
public void myFunction(String a,String b,String c)
{ Object arguments[] ; // List of argument objects;
// patternApplied(Object arguments[]) throws Exception
}

I hope I am able to make it clear.

Thanks,
Sandeep

Ben Hill wrote:

>On Fri, 2004-05-28 at 07:10, Sandeep Kachalia wrote:
>
>
>>Does exist a pattern for handling null arguments in a method.
>>any pointers??
>>
>>
>
>Not a method per se. If you have some sort of idea what the null
>handling should do, there may be a pattern to help.
>
>Cheers,
>
>Ben
>
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=ISO-8859 (See http://ISO-8859.ora-code.com)-1">
<title></title>
</head>
<body text="#330099" bgcolor="#ffffff">
Thanks Ben, 
I wanted to open APIs for my client. The API users may pass null values
as arguments. 
I have n number of  parameters against I need to do null verification. 
Can we apply some pattern here through which we check the nullability
and give customerized messages to user. 
 
e.g. 
public void myFunction(String a,String b,String c) 
{     Object  arguments[] ; // List of argument objects;
  
    // patternApplied(Object arguments[]) throws Exception 
} 
 
I hope I am able to make it clear. 
 
Thanks, 
Sandeep 
 
 
Ben Hill wrote: 
<blockquote type="cite" cite="mid1085735389.476.36.camel@(protected)">
<pre wrap="">On Fri, 2004-05-28 at 07:10, Sandeep Kachalia wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Does exist a pattern for handling null arguments in a method.
any pointers??
</pre>
</blockquote>
<pre wrap="">
Not a method per se. If you have some sort of idea what the null
handling should do, there may be a pattern to help.

Cheers,

Ben

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