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Learn how to effectively remove namespaces from XML documents using XSLT. We'll break down the process step-by-step to help you achieve the desired output without unwanted attributes.
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This video is based on the question https://stackoverflow.com/q/63642516/ asked by the user 'rahul' ( https://stackoverflow.com/u/2389887/ ) and on the answer https://stackoverflow.com/a/63642640/ provided by the user 'zx485' ( https://stackoverflow.com/u/1305969/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Remove Namespaces from XML Using XSLT

XML (eXtensible Markup Language) is a versatile data format commonly used for data exchange across different systems. However, when working with XML, you may find yourself needing to clean up the data. A common issue users face is removing namespaces from XML documents, especially when transforming XML data using XSLT (XML Stylesheet Language Transformations). If you're struggling with this challenge, you're not alone!

In this guide, we'll walk you through the process of effectively removing namespaces from XML while avoiding common pitfalls, such as unwanted attributes like xmlns="" appearing in your output.

The Problem: Unwanted Namespaces in XML

You might encounter an issue where you want to remove certain elements (like ID tags) from your XML data but end up with every tag containing the xmlns="" attribute. Here’s an example of such a situation:

Input XML

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Initial XSLT Attempt

Your initial XSLT might look something like this:

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

Generated Output

However, when you run this XSLT, you might get output like this:

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

As you can see, each child element includes an unwanted xmlns="", which can clutter the XML and lead to confusion.

The Solution: Refined XSLT Transformation

To fix this issue, you need to refine your XSLT. Here’s a cleaner approach that ensures the unwanted attributes are removed.

Updated XSLT Code

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Expected Output

Using this updated XSLT, your output should now look like this:

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

Explanation of Changes

Namespace Handling: Instead of trying to eliminate the default namespace by using xmlns="", we now specify the new namespace directly in the template that matches all child elements (using ns:*).

Removing ID Tag: The template that matches ns:ID remains intact, effectively omitting the ID element from the output.

Cleaner Structure: By simplifying our templates, we eliminate unnecessary complexity and avoid side effects such as unwanted namespace declarations.

Conclusion

Removing namespaces from an XML document using XSLT can be tricky, especially when you want to maintain clean output without unwanted attributes. By refining your approach and utilizing a focused XSLT template, you can achieve the desired results efficiently.

Now that you know how to effectively handle XML namespaces, you can streamline your XML transformations and focus on presenting data more clearly. Happy coding!