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Re: Local vs. network file

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Sorry about the lack of indentation, reply at the end...

"Peter Duniho"  wrote in message 
news:nb1dv4z3gq48.15acrjvtu4vh2.dlg@40tude.net...

On Mon, 25 Jun 2012 03:24:22 +1000, Qu0ll wrote:

> "Robert Klemme"  wrote in message news:a4ov8oF930U1@mid.individual.net...
>
> On 24.06.2012 18:18, Qu0ll wrote:
>>> Is it possible to determine if a given String contains the path of a
>>> file on a network drive (versus a local file) in Java 7?
>>
>> Yes.
>
> OK, thanks for the confirmation.  How is it done?

Actually, I doubt you can do this in a platform-independent way. Even on
Windows, a UNC path (which is normally used to specify a network path) can
refer to a local drive and a drive-letter path can refer to a network
location. You need to use platform-specific calls to tell the difference.

I'm less familiar with the *nix family, but my recollection is that because
of its even-more-generalized file system implementation, the path itself is
of no use. You'd also have to use lower-level OS-specific calls to get that
information.

That said, while it's true that there can be somewhat different i/o
characteristics between local and network files, I'm not convinced a
program should attempt to concern itself with them. As networks become
faster and faster, and more and more reliable, network-specific
restrictions in a program are much less appropriate, and at the same time
while delays and errors on local drives are rare, they can and do occur and
a program should handle them correctly.

Perhaps if you explain why it is you believe you need to know the
difference between a local and a network path, you can get better advice
that addresses your _actual_ problem, rather than does or does not solve
some specific method you've already selected to deal with that problem.

----------------------------------

Thanks Peter.

I have a requirement to limit a program which is licensed as "stand alone" 
to not be run from a network location so I figured if I could tell whether 
the launch directory was a network share then I could block it.  Is there 
another way I could implement this?

--
And loving it,

-Qu0ll (Rare, not extinct)
_________________________________________________
Qu0llSixFour@gmail.com
[Replace the "SixFour" with numbers to email me] 

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Thread

Local vs. network file "Qu0ll" <Qu0llSixFour@gmail.com> - 2012-06-25 02:18 +1000
  Re: Local vs. network file Robert Klemme <shortcutter@googlemail.com> - 2012-06-24 18:57 +0200
    Re: Local vs. network file "Qu0ll" <Qu0llSixFour@gmail.com> - 2012-06-25 03:24 +1000
      Re: Local vs. network file Peter Duniho <NpOeStPeAdM@NnOwSlPiAnMk.com> - 2012-06-24 10:49 -0700
        Re: Local vs. network file "Qu0ll" <Qu0llSixFour@gmail.com> - 2012-06-25 04:01 +1000
          Re: Local vs. network file Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-06-24 14:12 -0400
          Re: Local vs. network file Robert Klemme <shortcutter@googlemail.com> - 2012-06-24 20:20 +0200
          Re: Local vs. network file Leif Roar Moldskred <leifm@dimnakorr.com> - 2012-06-24 14:26 -0500
        Re: Local vs. network file Robert Klemme <shortcutter@googlemail.com> - 2012-06-24 20:14 +0200
          Re: Local vs. network file Peter Duniho <NpOeStPeAdM@NnOwSlPiAnMk.com> - 2012-06-24 13:10 -0700
            Re: Local vs. network file "Qu0ll" <Qu0llSixFour@gmail.com> - 2012-06-28 19:10 +1000
              Re: Local vs. network file Silvio Bierman <silvio@moc.com> - 2012-06-28 11:39 +0200
              Re: Local vs. network file Peter Duniho <NpOeStPeAdM@NnOwSlPiAnMk.com> - 2012-06-28 07:31 -0700
              Re: Local vs. network file Robert Klemme <shortcutter@googlemail.com> - 2012-07-02 19:33 +0200
                Re: Local vs. network file Joerg Meier <joergmmeier@arcor.de> - 2012-07-02 21:49 +0200
                Re: Local vs. network file Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-07-02 16:18 -0400
                Re: Local vs. network file Peter Duniho <NpOeStPeAdM@NnOwSlPiAnMk.com> - 2012-07-02 13:32 -0700
                Re: Local vs. network file Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-07-02 18:32 -0400
                Re: Local vs. network file Lew <lewbloch@gmail.com> - 2012-07-02 16:25 -0700
                Re: Local vs. network file Peter Duniho <NpOeStPeAdM@NnOwSlPiAnMk.com> - 2012-07-02 17:35 -0700
                Re: Local vs. network file Nine of Seventeen <n9seventeen17@gmail.com> - 2012-07-02 21:10 -0400
                Re: Local vs. network file uBend <d0b@d1b.d1b.null> - 2012-07-02 22:45 -0400
                Re: Local vs. network file j00sUck <j00-s.U-c_k@gmail.com> - 2012-07-02 22:59 -0400

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