CODEWITHSUNDEEP
javaoption-type
Hayi
Hayi

Reputation: 6236

Optional with additional processing before orElse

In my service I want to return the MAX+1 OR return 10000000 instead, I have fooRepository.findMax() which return an Optional<Long> which is the MAX.

How to do it in just one line like below (I miss just the increment part)

fooRepository.findMax().orElse(10000000L)

PS: I know I can do it in multiple lines with ifPresent ...

Upvotes: 0

Views: 95

Answers (3)

Rick
Rick

Reputation: 1095

You can use the map method to do something with the contents of the Optional. If the Optional is empty, it is not executed.

Like this:

fooRepository.findMax()
    .map(max -> max + 1)
    .orElse(10000000L);

Upvotes: 3

OhleC
OhleC

Reputation: 2890

That's what map is for:

fooRepository.findMax().map(m -> m + 1).orElse(10000000L)

Upvotes: 3

Ben R.
Ben R.

Reputation: 2155

This seems like a weird requirement, but why not just do...

fooRepository.findMax().orElse(9999999L) + 1

?

Upvotes: 3

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