Set relationships between features

This explains how to manipulate relationships between features.

Add constraint relationships between features

To add a constraint relationship between features, use the AddFeatureConstraint method of the IFeatureModel object.

The following values ​​can be specified for the constraint type.

• "Conflicts" ... Exclusive relationship
• "Implicit" ... Mutual dependency
• "Requires" ... Dependency

public void AddFeatureConstraint(ICommandContext c, ICommandParams p) 
{ 
IFeatureModel featureModel = c.App.Workspace.CurrentProject.ProductLineModel.FeatureModels.FirstOrDefault(); 
IFeature sourceFeature = featureModel.GetFeature("Display set distance"); 
IFeature targetFeature = featureModel.GetFeature("Following driving"); 

//Add dependency between specified features 
featureModel.AddFeatureConstraint(sourceFeature, targetFeature, "Requires"); 
} 

Get constraint relationship between features

To get constraint relationship between features, use the GetFeatureConstraint method of the IFeatureModel object.

public void GetFeatureConstraint(ICommandContext c, ICommandParams p) 
{ 
IFeatureModel featureModel = c.App.Workspace.CurrentProject.ProductLineModel.FeatureModels.FirstOrDefault(); 
IFeature sourceFeature = featureModel.GetFeature("Display distance between vehicles"); 
IFeature targetFeature = featureModel.GetFeature("Following"); 

//Get constraint relationship between specified features 
var constraint = featureModel.GetFeatureConstraint(sourceFeature, targetFeature, "Requires"); 
if (constraint != null) 
{ 
c.App.Output.WriteLine("sample", $"There is a dependency between {sourceFeature.Name} and {targetFeature.Name}"); 
} 
} 

Remove constraints between features

To remove constraints between features, use the RemoveFeatureConstraint method of the IFeatureModel object.

public void RemoveFeatureConstraint(ICommandContext c, ICommandParams p) 
{ 
IFeatureModel featureModel = c.App.Workspace.CurrentProject.ProductLineModel.FeatureModels.FirstOrDefault(); 
IFeature sourceFeature = featureModel.GetFeature("Display distance between vehicles"); 
IFeature targetFeature = featureModel.GetFeature("Following"); 

//Removes dependencies between specified features. 
featureModel.RemoveFeatureConstraint(sourceFeature, targetFeature, "Requires"); 
}