Hi Alan,
Where would you suggest to put such methods though? Should we aim for a
„IOUitls" class holding such methods in the first place and eventually place
some simple convenience methods on Input-/OutputStream and Reader/Writer?
I personally would do both, because I think it would make the usage more fluid
from the usage perspective coming from a InputStream/Reader.
Having said that, this leads me to the question:
Are some other use cases where it would be good to have some sort of a callback
in form of a function reference being called to notify about the amount of
bytes/chars read and written to the target. This to have a hook for cases where
we want to show either some sort of a progress or secondly sum of the total
amount of transferred data.
Also I think there should be may some possibility to stop the copy job on a
„feedback“ event as follows:
while ((read=input.read(buffer)>-1 && proceedCheck.read(read)) {
output.write(buffer, 0, read);
}
Where proceedCheck would be a functional interface similar to the IntConsumer
or LongConsumer but with a boolean return type signaling to keep on copying or
terminate. (or there is a better approach using other functional interfaces, I
missed so far)
Other opinions / input? I would be glad to help improve the library in this
direction to finally get rid of lots of duplicated code copying data…
Cheers Patrick
> Am 13.11.2014 um 20:59 schrieb Alan Bateman <[email protected]>:
>
> On 13/11/2014 19:31, Patrick Reinhart wrote:
>> Hi there,
>>
>> In the followup of a BOF with Stephen Colebourne with his ideas of small
>> library changes that may could get in JDK9. As of the fact that in the
>> codebase of my company there are several locations where we copy from/to IO
>> stream over and over again using either external libraries or do it by
>> ourselves, I suggested to have some support for easy coping data between
>> Input-/OutputStream or Reader/Writer without having to use to external
>> libraries.
>>
> Long overdue. I remember we prototyped methods like this (and much more)
> during JDK 7 but didn't do enough at the time to actually get them in. We did
> include a bunch of easy to use methods in the Files class at the time,
> including copy between input/output streams and files, but we didn't
> introduce an IOUtils or such class in java.io.
>
> -Alan
>
