Package org.picocontainer.visitors

Class TraversalCheckingVisitor

  • All Implemented Interfaces:
    PicoVisitor
    Direct Known Subclasses:
    MethodCallingVisitor, VerifyingVisitor
    public class TraversalCheckingVisitor
extends AbstractPicoVisitor
    Concrete implementation of Visitor which simply checks traversals. This can be a useful class for other Visitor implementations to extend, as it provides a default implementation in case you one is only interested in one PicoVisitor type. Example: 
     PicoContainer container = new DefaultPicoContainer();
 PicoContainer child = container.makeChildContainer();

 final List allContainers = new ArrayList();

 PicoVisitor visitor = new TraversalCheckingVisitor() {
     public boolean visitContainer(PicoContainer pico) {
         super.visitContainer(pico);  //Calls checkTraversal for us.
         allContainers.add(pico);
         return true;
     }
 }
    Author:
    Michael Rimov

    • Constructor Detail

      • TraversalCheckingVisitor

        public TraversalCheckingVisitor()

    • Method Detail

      • visitContainer

        public boolean visitContainer​(PicoContainer pico)
        Visit a PicoContainer that has to accept the visitor.
        Parameters:
        pico - the visited container.
        Returns:
        CONTINUE_TRAVERSAL if the traversal should continue. Any visitor callback that returns ABORT_TRAVERSAL indicates the desire to abort any further traversal.

      • visitComponentAdapter

        public void visitComponentAdapter​(ComponentAdapter<?> componentAdapter)
        Visit a ComponentAdapter that has to accept the visitor.
        Parameters:
        componentAdapter - the visited ComponentAdapter.

      • visitParameter

        public void visitParameter​(Parameter parameter)
        Visit a Parameter that has to accept the visitor.
        Parameters:
        parameter - the visited Parameter.