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From Alexander Klimetschek <aklim...@adobe.com>
Subject Re: hasProperty vs getProperty
Date Thu, 19 Jul 2012 22:44:39 GMT
On 19.07.2012, at 22:22, Julian Reschke wrote:

> On 2012-07-19 21:47, Alexander Klimetschek wrote:
>> On 12.06.2012, at 15:01, Julian Reschke wrote:
>> 
>>> Is this just to avoid catching exceptions? (keep in mind that the
>>> exception might be thrown anyway...)
>> 
>> No, if hasProperty() returns true, you don't expect the PathNotFoundEx and don't
have to handle it for the purpose of semantics! There is no catch(PathNotFoundEx) in the code
you quote :-)
> 
> Except for race conditions.

Yes, but that's a separate issue (atomic behavior). Any write operation based on that will
be a separate call anyway.

IMHO such application-level semantics (does exist vs. does not exist) should not be handled
by exceptions. Simply because it is not what exceptions are designed for (exceptions), when
the normal application logic expects this case. try/catch for normal logic is confusing.

Cheers,
Alex


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