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OCUP 2 Intermediate study materials
OCUP 2 Intermediate study resources

OCUP 2 Intermediate: Designing and Generating Interoperating Modules

OCUP 2 Intermediate · Work through your exam, one topic at a time.

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Designing and Generating Interoperating Modules

What the domain tests

This domain tests modular design in UML 2.5: components, interfaces, ports, connectors, packages, imports, substitutions, artifacts, and deployment. The goal is interoperating modules whose contracts are explicit and whose physical packaging is traceable.

Core rules

  • A Component is an indirectly instantiated Class. It provides and requires Interfaces, usually through Ports. A required interface is a formal contract, not a usage arrow.
  • ComponentRealization connects a Component to the Classifiers or Interfaces that realize it. Substitution states that one Classifier can replace another at a collaboration point.
  • PackageImport and ElementImport add references; visibility public re-exports, private does not. PackageMerge combines definitions and is used mainly for metamodel extension.
  • An Artifact manifests a Component; a Deployment deploys an Artifact on a Node.

Worked example

A PaymentService component provides PaymentIF and requires LedgerIF. PaymentAdapter realizes PaymentIF. Package payments publicly imports ledger::LedgerIF; artifact payment.jar manifests PaymentService; the artifact is deployed on AppServer. Reasoning: clients depend on PaymentIF, not on the adapter; substituting PaymentAdapter for another realization is valid only if it keeps the provided contract; the public import lets payments clients see LedgerIF; manifestation and deployment are separate links.

Traps

Do not draw an assembly connector as a plain dependency; it wires required to provided. Do not confuse import with merge: import references, merge combines. A required interface is not a usage dependency. An artifact is a physical file, a component is a logical unit. Private imports are not re-exported, so downstream packages may fail to compile.