Splitting a large XML file into smaller ones

I have a large XML similar to the one below:

<BookStore>
<Book>book1</Book>
<Book>book2</Book>
.....
<Book>book1000</Book>
<Book>book1001</Book>
......
</BookStore>

The <Book> element may occur in 1000's. I want to create several smaller XML file each containing say only 250 <Book> elements. As far as I know, the two ways it could be done is either using XSLT or loading the entire XML into a DataSet and then create smaller subset DataSets. Since I am not an expert on either of them, any help is appreciated

nadarajan

Asked: 2004-04-10

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2 Solutions

LVL 15

dualsoulCommented: 2004-04-10

It can be done in a number of ways.

1. You can do it without xml processing at all. Just use regular exprssions to get <Book>....</Book> string and output them to different files by 250 per file.

2. You can do it thourgh SAX or XmlReader interfaces. Read portions of 250 Book elements and output them to different files. For me, i'll prefer SAX solution.

3. You can use DOM model, and traverse through Book elements saving them to file by 250. Easy to write this one :)

4. You can write XSLT to output to different files, something like this:

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
      <xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>

      <xsl:template match="/">
            <xsl:for-each select="BookStore/Book">
                  <xsl:if test="position() mod 250=0">
                        
                  </xsl:if>

                  <xsl:copy-of select="."/>
            </xsl:for-each>
      </xsl:template>
</xsl:stylesheet>

, but the mechanism to change output file depends on particular XSLT processor, so if tell us what's yout XSLT processor....we can help you more.

So, you see, there are number of options :)

LVL 6

metalmickeyCommented: 2004-04-12

Dual soul fixed summut for me recently that divides xml docs

http://www-106.ibm.com/developerworks/xml/library/x-tipdivbig/

i think it uses a java class....

anyway heres my roginal prob and Dualsouls solution

http://oldlook.experts-exchange.com:8080/Web/Web_Languages/XML/Q_20908134.html

No points please

MM

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Splitting a large XML file into smaller ones

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