Hi Rod,
There is currently no way either to object-serialize or object-deserialize
a Xerces-C DOM.
Cheers!
Neil
Neil Graham
XML Parser Development
IBM Toronto Lab
Phone: 905-413-3519, T/L 969-3519
E-mail: [EMAIL PROTECTED]
"Farmer, Rod
(Contractor)" To: "'[EMAIL
PROTECTED]'" <[EMAIL PROTECTED]>
<[EMAIL PROTECTED] cc:
nce.gov.au> Subject: RE: Internal
Xerces structure available?
01/08/2004 06:28 PM
Please respond to
xerces-j-user
Hello Reinhard,
We currently have a compression mechanism in place that allows third party
users to turn compression on, including various levels of compression +
strategies etc... The problem we are finding to be specific is that the
process of converting numbers (especially floats) into strings (and
vice-versa) is extremely expensive. This is a known issue with Java, but as
a lot of the work that our clients do involves the tranmission of numerical
data, this results in a lot of "lost time". I guess my question was aimed
at a level further up from the solution of embedding BinHex64 binary data
into an XML file. Instead of inserting just floats etc.. as BinHex64, why
not the whole structure.
I haven't looked into it, but I also wonder if a DOM object created in
XERCES-J would be compatible with a XERCES DOM object for XERCES C/C++?
Thanks for the input
Rod
-----Original Message-----
From: Reinhard Brandst�dter [mailto:[EMAIL PROTECTED]
Sent: Wednesday, 7 January 2004 1:39 AM
To: [EMAIL PROTECTED]
Subject: Re: Internal Xerces structure available?
Farmer, Rod (Contractor) wrote:
> Hello, wondering if anyone else has thought about a similar problem as
the one below,
>
>
> I currently use Xerces-J to serialize Java objects to XML, send this
across a socket and have the corresponding object recreated in both a Java
and C++. We are finding that in profiling our software, significant
improvements could be made by removing the conversion of the internal
binary XML structure to plain text and sending this over the network
instead. For example. determing that the value of a class attribute is
(int) 5, writing this as a String and outputting to either a socket or file
as part of a larger XML document being written out.
>
> In other words, is there some internal Xerces binary structure that we
could use to send data across the network instead of using a plain text XML
representation of the serialized Java object?
Is the problem the time it takes to convert the internal DOM to an XML
file or the time it takes to send the XML text data over the network?
For the latter one I would try to compress the data, which should be
quite effective since it's only text.
Reinhard
--
Reinhard Brandstaedter [EMAIL PROTECTED] GPG: 0x033B81DB
- Student of Computer Science - J.K. University of Linz -
- <ICQ: 73059068> <Mobile: +43 699 12419541> -
- http://adelaide.dnsalias.net -
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