Package com.saperion.common.lang.iterator

Class ExpandingSubLevelIterator<T1,T2>

java.lang.Object

com.saperion.common.lang.iterator.ExpandingSubLevelIterator<T1,T2>

Type Parameters:

T1 - type of input objects of the main iterator

T2 - type of output objects and of the sub level iterators

All Implemented Interfaces:

Iterator<T2>

public final class ExpandingSubLevelIterator<T1,T2>
extends Object
implements Iterator<T2>

An ExpandingSubLevelIterator iterates through the sub level nodes of a virtual two level data structure.

It iterates through the objects of the specified main iterator. For each such main level object a call to the specified IteratorResolver is executed to get an iterator for the optional virtual sub elements. If such an iterator is found, all the sub elements will be iterated through.

Then, the main iterator will step to the next main object and its sub elements and so on.

Iterator.remove() is not supported.

Author:

agz

See Also:

• ExpandingNodeIterator
• ExpandingLeafIterator

Constructor Summary

Constructors

Constructor	Description
ExpandingSubLevelIterator(Iterator<? extends T1> iterator, IteratorResolver<T1,T2> iteratorResolver)	Creates a new ExpandingSubLevelIterator.

Method Summary

Modifier and Type	Method	Description
boolean	hasNext()
T2	next()
void	remove()
String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining

Constructor Details

ExpandingSubLevelIterator

public ExpandingSubLevelIterator(Iterator<? extends T1> iterator,
 IteratorResolver<T1,T2> iteratorResolver)

Creates a new ExpandingSubLevelIterator.

The specified iterator and the specified iterator resolver must not be null.

Parameters:

iterator - main level iterator

iteratorResolver - IteratorResolver

See Also:

• class documentation for details

Method Details

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<T1>

next

public T2 next()

Specified by:

next in interface Iterator<T1>

remove

public void remove()

Specified by:

remove in interface Iterator<T1>

toString

public String toString()

Overrides:

toString in class Object