Package org.qubership.atp.dataset.model.utils.tree

Class RefsVisitor<I,O>

java.lang.Object

com.google.common.collect.UnmodifiableIterator<Object>

com.google.common.collect.AbstractIterator<Object>

org.qubership.atp.dataset.model.utils.tree.AllRefsIterator<Object>

org.qubership.atp.dataset.model.utils.tree.RefsVisitor<I,O>

All Implemented Interfaces:

Iterator<Object>

public class RefsVisitor<I,O>
extends AllRefsIterator<Object>

Field Summary

Fields

Modifier and Type	Field	Description
protected TraverseHandler<I,O>	currentTraverseHandler

Constructor Summary

Constructors

Constructor	Description
RefsVisitor(Iterator<? extends I> parents, TraverseVisitor<I,O> visitor, Predicate<Object> itemsFilter)	Iterates over a tree hierarchy.

Method Summary

Modifier and Type	Method	Description
protected void	backToPreviousParent()
protected void	forwardToNewParent(Object parent)
protected Iterator<? extends O>	getChildren(Object parent)

Methods inherited from class org.qubership.atp.dataset.model.utils.tree.AllRefsIterator

computeNext

Methods inherited from class com.google.common.collect.AbstractIterator

endOfData, hasNext, next, peek

Methods inherited from class com.google.common.collect.UnmodifiableIterator

remove

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining

Field Details

currentTraverseHandler

protected TraverseHandler<I,O> currentTraverseHandler

Constructor Details

RefsVisitor

public RefsVisitor(@Nonnull
 Iterator<? extends I> parents,
 @Nonnull
 TraverseVisitor<I,O> visitor,
 @Nullable
 Predicate<Object> itemsFilter)

Iterates over a tree hierarchy.
The Iterator.next() invocation returns item of current iteration, same as AllRefsIterator.
Reports about vertical level changes using childrenSup and backToParentsCb.
Does not resolve recursion by default. You can do that in childrenSup or itemsFilter.
Reports about leafs found using leafsConsumer.
One iteration may result in invocation of leafsConsumer no more then one time.

Parameters:

parents - to iterate over. Inclusive.

visitor - to handle visit events.

itemsFilter - filters objects to iterate over. Delegates to AllRefsIterator.itemsFilter

Method Details

getChildren

@Nullable
protected Iterator<? extends O> getChildren(@Nonnull
 Object parent)

forwardToNewParent

protected void forwardToNewParent(Object parent)

backToPreviousParent

protected void backToPreviousParent()