That was what I thought... well, something like that. But is there a
method to verify the checksum when you add an "X" datastream? Maybe a
java librairy?... I have looked for it, but I didn't found it.
Pierre-Yves
Aaron Birkland a écrit :
Hi, Pierre-Yves
When you create an "M" datastream, Fedora stores the content in a
separate location with byte-for-byte accuracy. It stores exactly what
you send without modification. With inline XML (and FOXML in
general), the whitespace (indenting, spaces between attribute values,
etc) may be modified by the object serializer/deserializer. Indeed,
when Fedora calculates the checksum for "X" datastream, it
canonicalizes the content before calculating the checksum so that it
may arrive at the same value despite formatting changes that may have
been introduced in the XML serialization or parsing. Since "M"
datastreams are stored as exact bytes and never travel through an XML
parser, Fedora simply calculates the checksum on the bytes without any
sort of manipulation
-Aaron
-----Original Message-----
From: Pierre-Yves JALLUD [mailto:[email protected]]
Sent: Fri 5/15/2009 5:28 AM
To: fedora-commons-developers
Subject: [Fedora-commons-developers] Checksum problem for datastream
Hi all,
I have a problem of checksum for datastreams. If I add a datastream with
a Content Model wich is equal to "M", the checksum I had calculate and
the one fedora-commons calculates are the same. But if I add the same
datastream with a Content Model wich is equal to "X", fedora-commons
finds another checksum.
Is that normal?... I don't see why there is a difference... Is that a
bug or a normal behaviour?
Greetings
Pierre-Yves
begin:vcard
fn:Pierre-Yves JALLUD
n:JALLUD;Pierre-Yves
email;internet:[email protected]
tel;work:04-72-69-52-79
url:http://cc.in2p3.fr
version:2.1
end:vcard
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