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Full Discussion: Best way to go about this?
Homework and Emergencies Emergency UNIX and Linux Support Best way to go about this? Post 302706909 by stevensw on Thursday 27th of September 2012 03:47:35 PM
Old 09-27-2012
Best way to go about this?

I am processing a very large file, which is a text csv report of a database.

I would like to parse this csv file into a bunch of XML files.

I am trying to decide the most efficient way to go about doing this.

Should I open all the XML files at the same time, and as I encounter data I write to whichever descriptor? This approach would only require iterating through the csv file once. But I would be maintaining a bunch of descriptors at the same time, is that efficient?

Should I open and close a descriptor each time I need to write a piece of information to one of the XML files? This approach would also only require iterating through the csv file once. But I would be constantly opening and closing descriptors.

Should I fill out each XML file one at a time, iterating through the whole csv file each time?

Help much appreciated.
 
XML::Handler::CanonXMLWriter(3) 			User Contributed Perl Documentation			   XML::Handler::CanonXMLWriter(3)

NAME
XML::Handler::CanonXMLWriter - output XML in canonical XML format SYNOPSIS
use XML::Handler::CanonXMLWriter; $writer = XML::Handler::CanonXMLWriter OPTIONS; $parser->parse(Handler => $writer); DESCRIPTION
"XML::Handler::CanonXMLWriter" is a PerlSAX handler that will return a string or write a stream of canonical XML for an XML instance and it's content. "XML::Handler::CanonXMLWriter" objects hold the options used for writing the XML objects. Options can be supplied when the the object is created, $writer = new XML::Handler::CanonXMLWriter PrintComments => 1; or modified at any time before calling the parser's `"parse()"' method: $writer->{PrintComments} = 0; OPTIONS
IOHandle IOHandle contains a handle for writing the canonical XML to. If an IOHandle is not provided, the canonical XML string will be returned from `"parse()"'. PrintComments By default comments are not written to the output. Setting comment to a true value will include comments in the output. AUTHOR
Ken MacLeod, ken@bitsko.slc.ut.us SEE ALSO
perl(1), PerlSAX James Clark's Canonical XML definition <http://www.jclark.com/xml/canonxml.html> perl v5.8.0 2000-02-22 XML::Handler::CanonXMLWriter(3)
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