Aggregation References

In Aggregation References, one element groups several other elements into a whole. Most prominently, they are used to describe the relation between Programs and Modules.

Aggregations:

• Are one-directional.
• Are not strictly hierarchical. Children can exist outside the parent and can often be referenced by multiple children.
• Can target ElementClasses from other ontologies, as long as there is a dependency in that direction.
• Require the target ElementClass to have identifiers.

model/references/Executable_scriptModules.xml

<reference name="scriptModules">
  <associationType name="aggregation"/>
  <owner name="Executable" ontology="scriptElements"/>
  <target name="ScriptModule" ontology="scriptElements"/>
  <cardinality>
    <minimum>0</minimum>
    <maximum>*</maximum>
  </cardinality>
</reference>

Aggregation in action

DemoCli.xml

<executable>
  <scriptModules>
    <scriptModule>export</scriptModule>
    <scriptModule>import</scriptModule>
  </scriptModules>
</executable>

export.xml

<scriptModule>
  <name>export</name>
</scriptModule>

import.xml

<scriptModule>
  <name>import</name>
</scriptModule>

---