Implement maintainable and modular Mule applications and their Maven builds25% of the exam
Shared Mule libraries and configuration
Package and consume reusable Mule modules, define XML module inputs and identity, and keep public operations and internal reuse boundaries explicit.
Encapsulate common Mule application functionality in libraries.
~6 min read · 12 practice questions ·
What the exam expects
- Package reusable behaviour as a module with an explicit interface.
- Consume modules through Maven and distinguish module dependencies from application class loading.
- Configure XML module names, inputs, errors and reusable operation boundaries.
- Keep the module's public interface small and predictable.
A module adds reusable Mule components; a property configures the module; a parameter supplies an operation call; a namespace identifies its XML vocabulary; a classifier distinguishes Maven artifact usage. The SDK rules below are documented in the February 2024 primary sources, matching the exam's Spring 2024 context (SDK overview).
Sources for this section (1)
Key facts
Module consumption
- Detail
- Application Maven coordinates include
mule-plugin.
Extension API
- Detail
- SDK modules avoid direct runtime-internal dependencies.
- Source
- SDK (opens in a new tab)
XML composition
- Detail
- Existing processors form the operation body.
Resource identity
- Detail
- A custom prefix requires a matching resource folder.
Default namespace
- Detail
- Uses the module prefix when no namespace is explicit.
Requiredness
- Detail
- AUTO with a default is optional; REQUIRED cannot have a default.
Configuration
- Detail
- Optional properties do not remove the explicit configuration.
Java helper
- Detail
@Ignoreexcludes a public helper from operation discovery.
- Why must a review follow calls through several XML operations?
- When a business input is named
config-ref, what interface correction is needed? - Why use kebab-case consistently for XML SDK operation and parameter names?
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