Package graphql.util

Interface TraverserVisitor<T>

All Known Implementing Classes:
TraverserVisitorStub
public interface TraverserVisitor<T>

  • Method Details

    • enter

      TraversalControl enter(TraverserContext<T> context)
      Parameters:
      context - the context in place
      Returns:
      Any allowed control value

    • leave

      TraversalControl leave(TraverserContext<T> context)
      Parameters:
      context - the context in place
      Returns:
      Only Continue or Quit allowed

    • backRef

      default TraversalControl backRef(TraverserContext<T> context)
      This method is called when a node was already visited before. This can happen for two reasons: 1. There is a cycle. 2. A node has more than one parent. This means the structure is not a tree but a graph.
      Parameters:
      context - the context in place
      Returns:
      Only Continue or Quit allowed