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From "ASF GitHub Bot (JIRA)" <>
Subject [jira] [Work logged] (LANG-1435) ObjectUtils.defaultIfNull for slow default values
Date Fri, 01 Mar 2019 17:11:00 GMT


ASF GitHub Bot logged work on LANG-1435:

                Author: ASF GitHub Bot
            Created on: 01/Mar/19 17:10
            Start Date: 01/Mar/19 17:10
    Worklog Time Spent: 10m 
      Work Description: PascalSchumacher commented on issue #408: LANG-1435: Implemented defaultIfNull
method that uses a supplier for default value
   Thanks for the pull request!
   Java 11 offers `Objects#requireNonNullElseGet` (see,java.util.function.Supplier)
for details), so I don't think we should add this.
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Issue Time Tracking

            Worklog Id:     (was: 206530)
            Time Spent: 0.5h  (was: 20m)
    Remaining Estimate: 0h  (was: 10m)

> ObjectUtils.defaultIfNull for slow default values
> -------------------------------------------------
>                 Key: LANG-1435
>                 URL:
>             Project: Commons Lang
>          Issue Type: New Feature
>            Reporter: Dekel
>            Priority: Minor
>   Original Estimate: 0.5h
>          Time Spent: 0.5h
>  Remaining Estimate: 0h
> Currently, if the default value in defaultIfNull is computationally slow (for example,
it requires a database call, or complex calculations), it's not worth using the util method.
This feature is to implement a method that would only perform this computationally slow action
if the object value is actually null. This can be done using a Supplier.
> In short, you'd call ObjectUtils.getDefaultIfNull(someNullableValue, DbUtil::doGet) instead
of ObjectUtils.defaultIfNull(someNullableValue, DbUtil.doGet()) 

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