ProgramPage.AbstractTreeIterator (Ametys 4.4.x - API)

java.lang.Object
- org.ametys.plugins.odfweb.repository.ProgramPage.AbstractTreeIterator<T>

Type Parameters:

T - A tree item

All Implemented Interfaces:

Iterator<T>

Direct Known Subclasses:

CoursePage.CourseListTraverser, ProgramPage.ProgramPartTraverser

Enclosing class:

ProgramPage
```
abstract static class ProgramPage.AbstractTreeIterator<T>
extends Object
implements Iterator<T>
```
Breadth first search iterator for tree structure Each node can provide an iterator that will be put in the end of the queue.

Field Summary

Fields
Modifier and Type Field Description

private Boolean _hasNext

protected Queue<Iterator<T>> _nodeIterators

Constructor Summary

Constructors
Constructor Description

AbstractTreeIterator(Collection<? extends T> children)

AbstractTreeIterator(Iterator<T> iterator)

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`private Iterator<T>`	`_getOrUpdateHead()`
`private Iterator<T>`	`_updateHead()`
`private static <T> Iterator<T>`	`handleConstructorChildren(Collection<? extends T> children)`
`boolean`	`hasNext()`
`T`	`next()`
`protected abstract Iterator<T>`	`provideChildIterator(T next)`
`Stream<T>`	`stream()`

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, remove

Field Detail

_nodeIterators

protected final Queue<Iterator<T>> _nodeIterators

_hasNext
```
private Boolean _hasNext
```

Constructor Detail

AbstractTreeIterator

AbstractTreeIterator(Iterator<T> iterator)

AbstractTreeIterator

AbstractTreeIterator(Collection<? extends T> children)

Method Detail

handleConstructorChildren

private static <T> Iterator<T> handleConstructorChildren(Collection<? extends T> children)

hasNext
```
public boolean hasNext()
```
Specified by:

hasNext in interface Iterator<T>

next
```
public T next()
```
Specified by:

next in interface Iterator<T>

provideChildIterator

protected abstract Iterator<T> provideChildIterator(T next)

stream
```
public Stream<T> stream()
```

_getOrUpdateHead

private Iterator<T> _getOrUpdateHead()

_updateHead
```
private Iterator<T> _updateHead()
```