org.picocontainer.visitors
Class MethodCallingVisitor

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

All Implemented Interfaces:

Serializable, PicoVisitor

public class MethodCallingVisitor
extends TraversalCheckingVisitor
implements Serializable

A PicoVisitor implementation, that calls methods on the components of a specific type.

Author:

Aslak Hellesøy, Jörg Schaible

See Also:

Serialized Form

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

MethodCallingVisitor(Method method, Class<?> ofType, Object[] arguments, boolean visitInInstantiationOrder)
Construct a MethodCallingVisitor for a method with arguments.

MethodCallingVisitor(Method method, Class ofType, Object[] arguments)
Construct a MethodCallingVisitor for standard methods visiting the component in instantiation order.

Method Summary

protected Object[]	getArguments()
protected Method	getMethod()
protected Class<Void>	invoke(Object target)
protected void	invoke(Object[] targets)
Object	traverse(Object node) Entry point for the PicoVisitor traversal.
boolean	visitContainer(PicoContainer pico) Visit a PicoContainer that has to accept the visitor.

Methods inherited from class org.picocontainer.visitors.TraversalCheckingVisitor

visitComponentAdapter, visitComponentFactory, visitParameter

Methods inherited from class org.picocontainer.visitors.AbstractPicoVisitor

checkTraversal

Methods inherited from class java.lang.Object

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

Constructor Detail

MethodCallingVisitor

public MethodCallingVisitor(Method method,
                            Class<?> ofType,
                            Object[] arguments,
                            boolean visitInInstantiationOrder)

Construct a MethodCallingVisitor for a method with arguments.

Parameters:

method - the Method to invoke

ofType - the type of the components, that will be invoked

visitInInstantiationOrder - true if components are visited in instantiation order

arguments - the arguments for the method invocation (may be null)

Throws:

NullPointerException - if method, or ofType is null

MethodCallingVisitor

public MethodCallingVisitor(Method method,
                            Class ofType,
                            Object[] arguments)

Construct a MethodCallingVisitor for standard methods visiting the component in instantiation order.

Parameters:

method - the method to invoke

ofType - the type of the components, that will be invoked

arguments - the arguments for the method invocation (may be null)

Throws:

NullPointerException - if method, or ofType is null

Method Detail

traverse

public Object traverse(Object node)

Description copied from interface: PicoVisitor

Entry point for the PicoVisitor traversal. The given node is the first object, that is asked for acceptance. Only objects of type PicoContainer, ComponentAdapter, or Parameter are valid.

Specified by:

traverse in interface PicoVisitor

Overrides:

traverse in class AbstractPicoVisitor

Parameters:

node - the start node of the traversal.

Returns:

a visitor-specific value.

visitContainer

public boolean visitContainer(PicoContainer pico)

Description copied from class: TraversalCheckingVisitor

Visit a PicoContainer that has to accept the visitor.

Specified by:

visitContainer in interface PicoVisitor

Overrides:

visitContainer in class TraversalCheckingVisitor

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.

getMethod

protected Method getMethod()

getArguments

protected Object[] getArguments()

invoke

protected void invoke(Object[] targets)

invoke

protected Class<Void> invoke(Object target)