Creating XSLT from Specific XML Data for Beginners скачать в хорошем качестве

Creating XSLT from Specific XML Data for Beginners

A step-by-step guide to creating XSLT from a given XML structure, particularly focusing on merging child tags based on specific criteria. --- This video is based on the question https://stackoverflow.com/q/76296897/ asked by the user 'User_Earth_005' ( https://stackoverflow.com/u/21932427/ ) and on the answer https://stackoverflow.com/a/76299050/ provided by the user 'Martin Honnen' ( https://stackoverflow.com/u/252228/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions. Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Creating XSLT from specific XML Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l... The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license. If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com. --- Creating XSLT from Specific XML Data for Beginners If you're stepping into the world of XSLT (Extensible Stylesheet Language Transformations), you're likely faced with the challenge of converting a specific XML structure into a desired output format. Whether you're working on data transformation for web applications, or manipulating XML for better readability, understanding how to craft the right XSLT is key. The Problem at Hand Imagine you have a structured XML data set that contains numerous entries, each categorized under different types. Your task is to create an XSLT stylesheet that will extract specific categories (tags) along with their child tags and consolidate them into a unified format. Here's what the XML structure looks like: [[See Video to Reveal this Text or Code Snippet]] You want to fetch specific types (like "Test", "Rest", etc.) and gather all the child <f> tags that belong under each type until a new type appears. The expected output for type "Rest", for example, would look like this: [[See Video to Reveal this Text or Code Snippet]] Understanding the Solution The solution can be achieved by utilizing XSLT, especially version 3.0, which allows for powerful features like accumulators. Below, we will dissect the solution step by step to help you understand how to implement it. Step 1: Set Up Your XSLT You will begin by creating an xsl:stylesheet as follows: [[See Video to Reveal this Text or Code Snippet]] Namespace: Declare the namespaces as shown above. Parameter: Create a parameter (type) indicating the type you're interested in. Step 2: Define the Mode and Accumulators You can use accumulators to manage the processing of your XML data, which allows you to handle streamed processing efficiently. [[See Video to Reveal this Text or Code Snippet]] Here, two accumulators (first-found and found) will keep track of whether you've found the required type tag. Step 3: Accumulator Rules Define the rules that determine how your accumulators behave: [[See Video to Reveal this Text or Code Snippet]] This rule checks if the b child matches the specified type and updates the accumulator. Step 4: Handle Output Now, it's time to define how you want to output the data. Use templates to match the elements you're interested in: [[See Video to Reveal this Text or Code Snippet]] This template will copy the relevant tags into your output based on the conditions set in your accumulator. Example of Complete XSLT Stylesheet Finally, here's how the complete XSLT might look: [[See Video to Reveal this Text or Code Snippet]] Conclusion Understanding how to write XSLT can open up many possibilities for effective XML data manipulation. This example serves as a great starting point for beginners looking to merge child tags based on specific criteria. The use of accumulators in XSLT 3 makes this task even more manageable and efficient. With practice, you'll find that transforming XML data to meet specific needs becomes second nature. With this guide, you're equipped to start working with XSLT confidently. Happy transforming!