How to use

getDependencyGraphTransformer

method

in

org.sonatype.aether.RepositorySystemSession

public DependencyGraphTransformer getDependencyGraphTransformer()
{
  return session.getDependencyGraphTransformer();
}

@Override
public CollectResult collectDependencies(RepositorySystemSession session, CollectRequest request) throws DependencyCollectionException {
  DefaultRepositorySystemSession cloned = new DefaultRepositorySystemSession(session);
  DependencyGraphTransformer transformer = session.getDependencyGraphTransformer();
  //need to reset the transformer to prevent the transformation to happen and to it below separately.
  cloned.setDependencyGraphTransformer(null);
  CollectResult res = super.collectDependencies(cloned, request);
  CloningDependencyVisitor vis = new CloningDependencyVisitor();
  res.getRoot().accept(vis);
  //this part copied from DefaultDependencyCollector
  try {
    DefaultDependencyGraphTransformationContext context =
        new DefaultDependencyGraphTransformationContext(session);
    res.setRoot(transformer.transformGraph(res.getRoot(), context));
  } catch (RepositoryException e) {
    res.addException(e);
  }
  if (!res.getExceptions().isEmpty()) {
    throw new DependencyCollectionException(res);
  }
  res.getRoot().setData("NB_TEST", vis.getRootNode());
  return res;
}

if ( session.getDependencyGraphTransformer() == null )

if ( session.getDependencyGraphTransformer() == null )

DependencyGraphTransformer transformer = session.getDependencyGraphTransformer();
try

DependencyGraphTransformer transformer = session.getDependencyGraphTransformer();
try

setDependencyManager( session.getDependencyManager() );
setDependencySelector( session.getDependencySelector() );
setDependencyGraphTransformer( session.getDependencyGraphTransformer() );
setData( session.getData() );
setCache( session.getCache() );