Package org.apache.commons.configuration2.tree

Class ConfigurationNodeVisitorAdapter<T>

java.lang.Object

org.apache.commons.configuration2.tree.ConfigurationNodeVisitorAdapter<T>

Type Parameters:

T - the type of the nodes processed by this visitor

All Implemented Interfaces:

ConfigurationNodeVisitor<T>

Direct Known Subclasses:

BaseHierarchicalConfiguration.BuilderVisitor

public class ConfigurationNodeVisitorAdapter<T>
extends Object
implements ConfigurationNodeVisitor<T>

A simple adapter class that simplifies writing custom node visitor implementations.

This class provides dummy implementations for the methods defined in the ConfigurationNodeVisitor interface. Derived classes only need to override the methods they really need.

Constructor Summary

Constructors

Constructor	Description
ConfigurationNodeVisitorAdapter()

Method Summary

Modifier and Type	Method	Description
boolean	terminate()	Returns a flag whether the current visit process should be aborted.
void	visitAfterChildren(T node, NodeHandler<T> handler)	Visits the specified node after after its children - if existing - have been processed.
void	visitBeforeChildren(T node, NodeHandler<T> handler)	Visits the specified node before the children of this node - if existing - are processed.

Methods inherited from class java.lang.Object

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

Constructor Details

ConfigurationNodeVisitorAdapter

public ConfigurationNodeVisitorAdapter()

Method Details

visitBeforeChildren

public void visitBeforeChildren(T node,
 NodeHandler<T> handler)

Visits the specified node before the children of this node - if existing - are processed. Empty dummy implementation of this interface method.

Specified by:

visitBeforeChildren in interface ConfigurationNodeVisitor<T>

Parameters:

node - the node to be visited

handler - the NodeHandler

visitAfterChildren

public void visitAfterChildren(T node,
 NodeHandler<T> handler)

Visits the specified node after after its children - if existing - have been processed. Empty dummy implementation of this interface method.

Specified by:

visitAfterChildren in interface ConfigurationNodeVisitor<T>

Parameters:

node - the node to be visited

handler - the NodeHandler

terminate

public boolean terminate()

Returns a flag whether the current visit process should be aborted. This method allows a visitor implementation to state that it does not need any further data. It may be used e.g. by visitors that search for a certain node in the hierarchy. After that node was found, there is no need to process the remaining nodes, too. This method is called after each visited node. A result of true indicates that the current iteration is to be aborted. This implementation returns always false; this means that all nodes in the current hierarchy are traversed.

Specified by:

terminate in interface ConfigurationNodeVisitor<T>

Returns:

a flag if the visit process should be stopped