src/sysml.library/Domain Libraries/Requirement Derivation/RequirementDerivation.sysml

standard library package RequirementDerivation {
	doc /* This package provides language-extension metadata for modeling requirement derivation. */
	
	public import DerivationConnections::*;
	private import Metaobjects::SemanticMetadata;
	
	metadata def <original> OriginalRequirementMetadata :> SemanticMetadata {
		doc
		/*
		 * OriginalRequirementMetadata identifies a usage as an original requirement.
		 * It is intended to be used to tag the original requirement end of a Derivation.
		 */
		 
		:> annotatedElement : SysML::Usage;
		:>> baseType = originalRequirements meta SysML::Usage;
	}
	
	metadata def <derive> DerivedRequirementMetadata :> SemanticMetadata {
		doc
		/*
		 * DerivedRequirementMetadata identifies a usage as a derived requirement.
		 * It is intended to be used to tag the derived requirement ends of a Derivation.
		 */
		 
		:> annotatedElement : SysML::Usage;	
		:>> baseType = derivedRequirements meta SysML::Usage;
	}
	
	metadata def <derivation> DerivationMetadata :> SemanticMetadata {
		doc
		/*
		 * DerivationMetadata is SemanticMetadata for a Derivation connection.
		 */
		 
		:> annotatedElement : SysML::ConnectionDefinition;
		:> annotatedElement : SysML::ConnectionUsage;
		:>> baseType = derivations meta SysML::Usage;
	}	
}