Скачать или смотреть How to Remove Elements in XSLT

Discover a simple method to remove specific XML elements using XSLT transformations. Learn how to replace unwanted content seamlessly without losing structure.
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This video is based on the question https://stackoverflow.com/q/63707971/ asked by the user 'Brajesh Narayan' ( https://stackoverflow.com/u/5804049/ ) and on the answer https://stackoverflow.com/a/63708274/ provided by the user 'kjhughes' ( https://stackoverflow.com/u/290085/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Remove Elements in XSLT: A Comprehensive Guide

When working with XML and XSLT, there may arise situations where you want to remove certain elements from your XML documents. In this guide, we will tackle a common issue: removing the <span> element with a specific class and value using XSLT.

The Problem

Suppose you have an XML structure that includes the following snippet:

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

You may want to remove this specific <span> element entirely from your XML output. The goal is to replace this element with no value at all, meaning it won't appear in the transformed output.

Example XML Input

Imagine you have the entire XML similar to this:

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

After the transformation, your expected output should be:

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

The Solution

To achieve this removal through XSLT, we will utilize a basic template matching along with the identity transformation approach. Below is a step-by-step breakdown of how to accomplish this.

Step 1: Set Up Your XSLT Stylesheet

Begin by creating your XSLT stylesheet which will apply the transformation:

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

Step 2: Implement the Identity Transformation

The identity transformation is a fundamental XSLT technique that copies all nodes from the input XML to the output. We will use a template to match all nodes and attributes:

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

Step 3: Match and Remove the Desired Element

Next, we need a specific template that matches the <span> element we want to remove:

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

Full XSLT Code

Combining all the steps, your complete XSLT code will look like this:

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

Conclusion

By following these steps, you can effectively remove unwanted elements from your XML using XSLT. The identity transformation ensures that all other parts of the document remain intact, while the specific match for the <span> element allows for precise control over what gets excluded from the output.

If you find yourself needing to alter XML documents regularly, mastering XSLT transformations can greatly enhance your efficiency and flexibility in handling XML data.

Happy transforming!