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From Bernd Eckenfels <e...@zusammenkunft.net>
Subject [IO-564] Javadoc inheritance for ByteArrayOutputStream.write
Date Sat, 06 Jan 2018 04:13:37 GMT
Hello,

Hao Zong reported some missing Details in the JavaDoc of ByteArrayOutputStream#write. While
I dont think it is critical we should probably fix it, since a user asked for it.

I am willing to go through the streams of [IO] and adjust them, but I Need to know how:


a) Remove the JavaDoc of those overwritten API methods completely. This will inherit the JavaDoc
from the official Stream classes which is in this case aproperiate and complete. This will
make a good JavaDoc and shortst possible Code but the Code Looks underdocumented then.
b) Like a) but Keep a non-Javadoc comment giving the existing short description and a note
to the effect of not having JavaDoc. This retains the full JavaDoc doc, the source is however
a bit longer with a uncommon block comment.
c) Use javadoc with @{inheritDoc}. This makes it clear what is going on, however the @Throws
documentation would Need to be replicated as it is not inherited.
d) Expand the existing documentation. This will take most work and space in the Code

Whats your Preference? I would really like to use a) in this case, is this acceptable?


Gruss
Bernd
-- 
http://bernd.eckenfels.net

Von: Bernd Eckenfels (JIRA)
Gesendet: Montag, 25. Dezember 2017 15:24
An: issues@commons.apache.org
Betreff: [jira] [Commented] (IO-564) The rules of ByteArrayOutputStream.writeare not documented.


    [ https://issues.apache.org/jira/browse/IO-564?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16303286#comment-16303286
] 

Bernd Eckenfels commented on IO-564:
------------------------------------

The functionality is defined in the `java.io.OutputStream`. It defines in the description
some of the runtime exceptions. I am not sure if we should duplicate the description. Maybe
inherit the doc?

> If off is negative, or len is negative, or off+len is greater than the length of the
array b,
> then an IndexOutOfBoundsException is thrown.

Also when we copy the description, should we use @throws for IOOBE and NPE?

> The rules of ByteArrayOutputStream.write are not documented.
> ------------------------------------------------------------
>
>                 Key: IO-564
>                 URL: https://issues.apache.org/jira/browse/IO-564
>             Project: Commons IO
>          Issue Type: Improvement
>          Components: Streams/Writers
>    Affects Versions: 2.6
>            Reporter: Hao Zhong
>
> When I call the ByteArrayOutputStream.write method, it returns exceptions. Its API document
 is not quite useful, since it does not define any rules. From the thrown exceptions, I cannot
get any useful information either. Until I read the code, I understand its usage:
> {code}
>  public void write(final byte[] b, final int off, final int len) {
>  if ((off < 0)
>                 || (off > b.length)
>                 || (len < 0)
>                 || ((off + len) > b.length)
>                 || ((off + len) < 0)) {
>             throw new IndexOutOfBoundsException();
>         } else if (len == 0) {
>             return;
>         }
> ...
> }
> {\code}
> Would you please explicitly introduce the rules in the doucment? Or, would you please
add more messages to the thrown exception? Both ways can make the API easier to understand.



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