[XSL-LIST Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message]

Re: How to efficiently obtain the first 10 records of

Subject: Re: How to efficiently obtain the first 10 records of a file with over 2 million records?
From: "Michael Kay michaelkay90@xxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>
Date: Wed, 19 Jul 2023 17:20:50 -0000
Re:  How to efficiently obtain the first 10 records of
Just put it through a streaming XSLT 3.0 processor and it should work just
fine.

Note, even a non-streaming XSLT processor, if it has a half-way decent
optimizer, should stop processing after the 10th record. The difference with a
streaming processor is that it will stop the XML parser reading the rest of
the file and building the tree in memory.

Michael Kay
Saxonica

> On 19 Jul 2023, at 16:16, Roger L Costello costello@xxxxxxxxx
<xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:
>
> Hi Folks,
>
> I have an XML file containing over 2 million <record> elements. I want to
obtain the first 10 <record> elements.
>
> Here's how I did it:
>
> <xsl:for-each select="/Document/record[position() le 10]">
>    <xsl:sequence select="."/>
> </xsl:for-each>
>
> I ran it and it took a long time to complete. I am guessing that the XSLT
processor is iterating over all 2 million <record> elements. Yes?  How to
write the XSLT code so that the XSLT processor stops iterating upon processing
the first 10 <record> elements?
>
> /Roger

Current Thread

PURCHASE STYLUS STUDIO ONLINE TODAY!

Purchasing Stylus Studio from our online shop is Easy, Secure and Value Priced!

Buy Stylus Studio Now

Download The World's Best XML IDE!

Accelerate XML development with our award-winning XML IDE - Download a free trial today!

Don't miss another message! Subscribe to this list today.
Email
First Name
Last Name
Company
Subscribe in XML format
RSS 2.0
Atom 0.3
Site Map | Privacy Policy | Terms of Use | Trademarks
Free Stylus Studio XML Training:
W3C Member
Stylus Studio® and DataDirect XQuery ™are products from DataDirect Technologies, is a registered trademark of Progress Software Corporation, in the U.S. and other countries. © 2004-2013 All Rights Reserved.