ExpandingLeafIterator (JCS Classic Connector Module 8.6.0-7 API)

java.lang.Object
- com.saperion.common.lang.iterator.ExpandingLeafIterator<T>

Type Parameters:

T - type of objects to iterate

All Implemented Interfaces:

java.util.Iterator<T>
```
public final class ExpandingLeafIterator<T>
extends java.lang.Object
implements java.util.Iterator<T>
```
An ExpandingLeafIterator iterates through the leaf 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. Only if no such iterator is found the object of the main level will be returned.

ATTENTION: If a sub-level iterator is found but is empty, no elements will be iterated through and the main level object is NOT returned, because there was a valid (but empty) sub level. The main level object is only returned if the IteratorResolver returns null, indicating that there is no sub level for this main object.

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, ExpandingSubLevelIterator

Constructor Summary

Constructors
Constructor	Description
`ExpandingLeafIterator(java.util.Iterator<? extends T> iterator, IteratorResolver<T,T> iteratorResolver)`	Creates a new `ExpandingLeafIterator`.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type Method Description

boolean hasNext()

T next()

void remove()

java.lang.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 Detail
  - ExpandingLeafIterator
```
public ExpandingLeafIterator(java.util.Iterator<? extends T> iterator,
                             IteratorResolver<T,T> iteratorResolver)
```
    Creates a new ExpandingLeafIterator.
    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 Detail
  - hasNext
```
public boolean hasNext()
```
    Specified by:
    
    hasNext in interface java.util.Iterator<T>
  - next
```
public T next()
```
    Specified by:
    
    next in interface java.util.Iterator<T>
  - remove
```
public void remove()
```
    Specified by:
    
    remove in interface java.util.Iterator<T>
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object