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From "George Harley (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HARMONY-436) [classlib][luni] lang: Harmony should throw exceptions in a way similar to RI's one.
Date Wed, 10 May 2006 17:35:04 GMT
    [ http://issues.apache.org/jira/browse/HARMONY-436?page=comments#action_12378955 ] 

George Harley commented on HARMONY-436:
---------------------------------------

Hi Dmitry, 

Thanks for your response. I'm not sure that I feel happy using details of the RI internals
(i.e. the stack trace information) as the basis for this discussion. In my heart I feel that
we should do as the RI does for all of the cases mentioned in this issue. Because we agreed
on the list a while ago that we would discuss such matters on a case by case basis I would
like to move this discussion on to the dev list. 

When I get a few moments I will write an append to the dev list summarising our discussion
here, probably copying a few paragraphs, and ask for the community view. That way we can *all*
work this out and firm up our guidelines on compatibility at the same time. 

Best regards, 
George

> [classlib][luni] lang: Harmony should throw exceptions in a way similar to RI's one.
> ------------------------------------------------------------------------------------
>
>          Key: HARMONY-436
>          URL: http://issues.apache.org/jira/browse/HARMONY-436
>      Project: Harmony
>         Type: Bug

>   Components: Classlib
>     Reporter: Dmitry M. Kononov
>     Assignee: George Harley
>     Priority: Minor
>  Attachments: lang.cumulative.diff
>
> 1) java.lang.StringBuilder.insert(int offset, char c):
> Harmony throws StringIndexOutOfBoundsException when offset <0,
> while RI throws ArrayIndexOutOfBoundsException. 
> Specification mentions neither StringIndexOutOfBoundsException
> nor ArrayIndexOutOfBoundsException throwing, but says: 
> "Throws:
> IndexOutOfBoundsException - if the offset is invalid".
> 2) java.lang.StringBuffer.append(char[] str, int offset, int len):
> Harmony throws StringIndexOutOfBoundsException when str is not
> null, offset or/and len <0, while RI throws
> ArrayIndexOutOfBoundsException. Specification mentions neither
> StringIndexOutOfBoundsException nor
> ArrayIndexOutOfBoundsException throwing.
> 3) java.lang.StringBuffer.append(char[] str, int offset, int len):
> Harmony throws StringIndexOutOfBoundsException when str = null,
> offset or/and len <0, while RI throws NullPointerException.
> Specification mentions neither StringIndexOutOfBoundsException
> nor NullPointerException throwing.
> 4) java.lang.StringBuffer.getChars(int srcBegin,int srcEnd,char[] dst, int dstBegin):
> Harmony throws StringIndexOutOfBoundsException when dstBegin <0,
> while RI throws ArrayIndexOutOfBoundsException.
> Specification says:
> "Throws: 
> IndexOutOfBoundsException - if any of the following is true: 
> ...
> dstBegin is negative". 
> So RI does not comply with spec as well as Harmony does not comply with it.
> 5) java.lang.StringBuffer.insert(int offset, char c):
> Harmony throws StringIndexOutOfBoundsException when offset <0,
> while RI throws ArrayIndexOutOfBoundsException.
> Specification says:
> "The offset argument must be greater than or equal to 0 ... 
> Throws: 
> IndexOutOfBoundsException - if the offset is invalid."
> So RI does not comply with spec as well as Harmony does not comply with it.

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