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standard library package CauseAndEffect {
doc /* This package provides language-extension metadata for cause-effect modeling. */
public import CausationConnections::*;
private import ScalarValues::*;
private import Metaobjects::SemanticMetadata;
metadata def <cause> CauseMetadata :> SemanticMetadata {
doc
/*
* CauseMetadata identifies a usage as being a cause occurrence.
* It is intended to be used to tag the cause ends of a Multicausation.
*/
ref :>> annotatedElement : SysML::Usage;
ref :>> baseType = causes as SysML::Usage;
}
metadata def <effect> EffectMetadata :> SemanticMetadata {
doc
/*
* EffectMetadata identifies a usage as being an effect occurrence.
* It is intended to be used to tag the effect ends of a Multicausation.
*/
ref :>> annotatedElement : SysML::Usage;
ref :>> baseType = effects as SysML::Usage;
}
metadata def CausationMetadata {
doc
/*
* CausationMetadata allows for the specification of additional metadata about
* a cause-effect connection definition or usage.
*/
ref :> annotatedElement : SysML::ConnectionDefinition;
ref :> annotatedElement : SysML::ConnectionUsage;
attribute isNecessary : Boolean default false {
doc
/*
* Whether all the causes are necessary for all the effects to occur.
* If this is false (the default), then some or all of the effects may
* still have occurred even if some of the causes did not.
*/
}
attribute isSufficient : Boolean default false {
doc
/*
* Whether the causes were sufficient for all the effects to occur.
* If this is false (the default), then it may be the case that some
* other occurrences were also necessary for some or all of the effects
* to have occurred.
*/
}
attribute probability : Real[0..1] {
doc /* The probability that the causes will actually result in effects occurring. */
}
}
metadata def <multicausation> MulticausationSemanticMetadata :> CausationMetadata, SemanticMetadata {
doc
/*
* MulticausationMetadata is SemanticMetadata for a Multicausation connection.
*/
ref :>> baseType = multicausations meta SysML::Usage;
}
metadata def <causation> CausationSemanticMetadadata :> CausationMetadata, SemanticMetadata {
doc
/*
* CausationMetadata is SemanticMetadata for a Causation connection.
*/
ref :>> baseType = causations meta SysML::Usage;
}
}
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