Скачать или смотреть How to Sum Two Numbers Using XSLT with XML Data

This guide explores how to sum two numbers in XSLT, using XML data. Follow our detailed instructions and examples to successfully transform your XML data with XSLT.
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This video is based on the question https://stackoverflow.com/q/65218563/ asked by the user 'TOM ARM' ( https://stackoverflow.com/u/14269418/ ) and on the answer https://stackoverflow.com/a/65218833/ provided by the user 'Marc Stroebel' ( https://stackoverflow.com/u/4445625/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Sum Two Numbers Using XSLT with XML Data

Working with XML data transformation can be quite challenging, especially when it involves mathematical operations like summation. One common requirement is to perform currency conversions in XML data using XSLT (Extensible Stylesheet Language Transformations). In this guide, we will break down how to sum two numbers from an XML input and convert them using the specified currency rate. Let's dive into it!

The Problem at Hand

You might have a product feed stored in an XML file that contains pricing information in euros. For example, your XML may look like this:

[[See Video to Reveal this Text or Code Snippet]]

Your goal is to convert that pricing information into Polish złoty (PLN) by multiplying the original prices by the currency conversion rate. The expected output should look like this:

[[See Video to Reveal this Text or Code Snippet]]

The XSLT Solution

Step 1: Write the XSLT Stylesheet

To achieve the currency conversion and summation, you will need to write an XSLT stylesheet. Below is an example of a working XSLT, specifically tailored to process the input XML and output the transformed values.

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Explanation of the XSLT Code

Stylesheet Declaration: The XSLT begins with a declaration that specifies the version and required namespace.

Template Match: The / matches the root of the document, initiating the transformation.

For-each Loop: <xsl:for-each select="Items/item"> iterates through each <item> in the XML.

Calculating and Outputting Values:

The <price> element is calculated by multiplying the original <price> by the <rate_currency_change>.

Similarly, the <recommended_price> is calculated using the same multiplication factor.

Step 3: Result

When you apply this XSLT to the original XML input, the output will be:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

Using XSLT to sum numbers within an XML document can simplify tasks like currency conversion. This guide provided a clear methodology to structure data transformation from euros to PLN by applying the necessary calculations directly in your XSLT stylesheet. With these steps, you can easily adapt the process for different currencies or data structures as needed. Happy coding!