Replace null with empty String decorator

Question

Is there in Cactoos framework some Text decorator (or maybe some other way), which replace null string with empty string? Like Strings.nullToEmpty function in Google Guava.

I have found NoNulls decorator, but I need just replacement without throwing exception.

So it must look like this:

String someNullString = null; 
new StrictEmptyText(
 new TextOf(someNullString) // this row produces NPE for now
).asString(); // ""

Thanks a lot for helping.

Answer 1

No, there's no Text implementation that does this for you in a direct way.

Using pure cactoos:

new TextOf(
  new UncheckedScalar<>(
    new Ternary<>(
      someNullString != null,
      someNullString,
      ""
    )
  ).value()
)

Answer 2

You can use Optional::ofNullable from Java 8 like so :

String str = Optional.ofNullable(someNullString)
        .orElse(""); // return empty if someNullString is null or someNullString if not null