ObjectUtils.defaultIfNotNull
----------------------------
Key: LANG-694
URL: https://issues.apache.org/jira/browse/LANG-694
Project: Commons Lang
Issue Type: Improvement
Components: lang.*
Environment: all
Reporter: Ivan Hristov
Priority: Minor
Currently there is a defaultIfNull method in ObjectUtils, which is a great one,
but it will be nice to have an additional method called defaultIfNotNull which
returns null if the first parameter is null or the second parameter if the
object is not null. This is quite helpful and avoids an if statement for cases
when there is a wrapper object which first need to be checked if it's null and
then information could be taken from it. Example:
public class MyNiceWrapper {
private Date wrappedDate;
public Date getWrappedDate() {
return wrappedDate;
}
...
}
MyNiceWrapper myNiceWrapperObject =
someNiceMethodWhichReturnsMyNiceWrapper(...);
ObjectUtils.defaultIfNotNull(myNiceWrapperObject,
myNiceWrapperObject.getWrappedDate);
For the moment I have to perform a null comparison on my own,e.g.,
if (myNiceWrapperObject == null) {
return null;
}
return myNiceWrapperObject.getWrappedDate();
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