Re: ObjectUtils

[Rafael Santini]

Hi Ted,

I have some codes that needs to test whether a set of objects are all true 
or not. For example:

if (obj1 != null && obj2 != null && obj3 != null && obj4 != null) {
   // Do something...
}

So, for readability reason, I have replaced for:

if (isNotTrue(obj1, obj2, obj3, obj4) {
   // Do something...
}

So I would like something like the isNotNull(Object... objects) method in 
Commons Lang instead of maintain this method in my own framework.

Thanks,

Rafael Santini

-----Mensagem Original----- 
From: Ted Dunning
Sent: Thursday, July 04, 2013 4:34 PM
To: Commons Developers List
Subject: Re: Lang: ObjectUtils

A bigger question is why this is needed at all.

Why not just use composition?  In guava, one would do this:

       Iterables.all(Arrays.asList(foo), new Predicate<Double>() {
           @Override
           public boolean apply(Double input) {
               return input != null;
           }
       });

Surely the same is already possible with commons.



On Thu, Jul 4, 2013 at 12:23 PM, Dave Brosius 
<dbros...@mebigfatguy.com>wrote:

This implies that having arrays with some null elements is

a) somewhat common
2) a good idea


I'd say both are not true.

I'm not sure the library should promote that the above is the case.



On 07/04/2013 02:43 PM, Rafael Santini wrote:

Hi,

I would like to propose a method in ObjectUtils class that receives an
array of objects and returns true if all objects are not null. I have
implemented the following:

public static boolean isNull(Object object) {
   return object == null;
}

public static boolean isNotNull(Object object) {
   return isNull(object) == false;
}

public static boolean isNotNull(Object... objects) {
   for (Object object : objects) {
       if (isNull(object)) {
           return false;
       }
   }
   return true;
}

Can I submit a patch for this feature?

Thanks,

Rafael Santini




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