XSLT Parameter Tutorial

[predic8]

…Interceptor

Summary by CodeRabbit

• New Features

  • Added a tutorial demonstrating how exchange properties can be passed as XSLT parameters.
  • Added an XSLT example that enriches XML output with a configurable library attribute.

• Tests

  • Added integration coverage verifying the tutorial’s transformed XML response and HTTP behavior.

• Documentation

  • Expanded XSLT interceptor documentation with clearer configuration examples.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: 10adcbba-9250-4a24-893b-e3cff2530d8c

📥 Commits

Reviewing files that changed from the base of the PR and between d6d92d4 and 7150e2e.

📒 Files selected for processing (4)

• core/src/main/java/com/predic8/membrane/core/interceptor/xslt/XSLTInterceptor.java
• distribution/src/test/java/com/predic8/membrane/tutorials/xml/XsltParameterTutorialTest.java
• distribution/tutorials/xml/41-XSLT-Parameter.yaml
• distribution/tutorials/xml/add-library.xsl

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📝 Walkthrough

Walkthrough

Adds an XSLT parameter tutorial with a YAML route, stylesheet, and integration test. The XSLT interceptor receives documentation and formatting-only updates without observable behavior changes.

Changes

XSLT parameter tutorial

Layer / File(s)	Summary
XSLT interceptor updates core/src/main/java/com/predic8/membrane/core/interceptor/xslt/XSLTInterceptor.java	Updates class documentation and transformer initialization formatting while preserving existing behavior.
Tutorial transformation flow distribution/tutorials/xml/41-XSLT-Parameter.yaml, distribution/tutorials/xml/add-library.xsl, distribution/src/test/java/com/predic8/membrane/tutorials/xml/XsltParameterTutorialTest.java	Configures an exchange property as an XSLT parameter, adds the stylesheet transformation, and verifies the HTTP 200 XML response.

Estimated code review effort: 2 (Simple) | ~10 minutes

Sequence Diagram(s)

sequenceDiagram
  participant Client
  participant MembraneGateway
  participant XSLTInterceptor
  Client->>MembraneGateway: POST books.xml
  MembraneGateway->>XSLTInterceptor: Set library exchange property
  XSLTInterceptor->>XSLTInterceptor: Apply add-library.xsl with library
  XSLTInterceptor-->>MembraneGateway: Return transformed books XML
  MembraneGateway-->>Client: HTTP 200 XML response

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Possibly related PRs

• membrane/api-gateway#2636: Refactors internals and initialization structure in XSLTInterceptor.
• membrane/api-gateway#2647: Changes XSLT transformer initialization exception handling.
• membrane/api-gateway#2822: Updates XSLT initialization error handling.

Suggested reviewers: rrayst, christiangoerdes

Poem

A rabbit hops through XML bright,
Passing library left and right.
The stylesheet blooms, books align,
“predic8” shines on every line.
Tests thump softly: status two-oh-oh!

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly matches the main change: a new XSLT parameter tutorial with supporting interceptor updates.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch xslt-parameters-tutorial

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