org.picocontainer.visitors
Class TraversalCheckingVisitor

java.lang.Object
  org.picocontainer.visitors.AbstractPicoVisitor
      org.picocontainer.visitors.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

Nested Class Summary

Nested classes/interfaces inherited from class org.picocontainer.visitors.AbstractPicoVisitor

AbstractPicoVisitor.PicoVisitorTraversalException

Field Summary

Fields inherited from interface org.picocontainer.PicoVisitor

ABORT_TRAVERSAL, CONTINUE_TRAVERSAL

Constructor Summary

TraversalCheckingVisitor()

Method Summary

void	visitComponentAdapter(ComponentAdapter<?> componentAdapter) Visit a ComponentAdapter that has to accept the visitor.
void	visitComponentFactory(ComponentFactory componentFactory) Visit a ComponentAdapter that has to accept the visitor.
boolean	visitContainer(PicoContainer pico) Visit a PicoContainer that has to accept the visitor.
void	visitParameter(Parameter parameter) Visit a Parameter that has to accept the visitor.

Methods inherited from class org.picocontainer.visitors.AbstractPicoVisitor

checkTraversal, traverse

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

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.

visitComponentFactory

public void visitComponentFactory(ComponentFactory componentFactory)

Visit a ComponentAdapter that has to accept the visitor.

visitParameter

public void visitParameter(Parameter parameter)

Visit a Parameter that has to accept the visitor.

Parameters:

parameter - the visited Parameter.