Metadata Assignment Rules

→ rules for attaching certain metadata to concepts under specific conditions

• a list of active metadata assignment rules is maintained within the processing context
• rules are applied to language concept that were extracted in during the postChildrenProcessing phase
• the application of a rule is realized as setting one or more key-value pairs in the metadata property of a given concept object
• each rule contains a condition which has to evaluate to true for the rule to be applied
• if a rule was applied to one or more concepts at some point during the AST traversal, it is deleted from the set of active rules
• metadata assignment rules are propagated up the AST by the traversers until it can be applied to at least one concept

Implementation

classDiagram
	class MetadataAssignmentRule {
		+Map~String, Object~ metadata
		+Predicate~Concept~ condition
		+apply(Concept concept) boolean
	}