java.lang.Object
- org.apache.jackrabbit.spi.commons.iterator.Iterators

```
public final class Iterators
extends Object
```
Historical utility class containing type safe adapters for some of the iterators of commons-collections.

Method Summary

All Methods Static Methods Concrete Methods Deprecated Methods
Modifier and Type	Method	Description
`static <T> Iterator<T>`	`arrayIterator(T[] values, int from, int to)`	Returns an iterator for elements of an array of `values`.
`static <T> Iterator<T>`	`empty()`	Returns an empty iterator of type `T`.
`static <T> Iterator<T>`	`filterIterator(Iterator<? extends T> iterator, Predicate<? super T> predicate)`	Returns an iterator with elements from an original `iterator` where the given `predicate` matches removed.
`static <T> Iterator<T>`	`filterIterator(Iterator<? extends T> iterator, Predicate<? super T> predicate)`	Deprecated. use `filterIterator(Iterator, java.util.function.Predicate)` instead
`static <T> Iterator<T>`	`iteratorChain(Collection<Iterator<? extends T>> iterators)`	Returns an iterator for the concatenation of all the given `iterators`.
`static <T> Iterator<T>`	`iteratorChain(Iterator<? extends T>[] iterators)`	Returns an iterator for the concatenation of all the given `iterators`.
`static <T> Iterator<T>`	`iteratorChain(Iterator<? extends T> iterator1, Iterator<? extends T> iterator2)`	Returns an iterator for the concatenation of `iterator1` and `iterator2`.
`static Iterator<Node>`	`nodes(NodeIterator nodeIterator)`	Returns an iterator of `Node` from a `NodeIterator`.
`static Iterator<Property>`	`properties(PropertyIterator propertyIterator)`	Returns an iterator of `Property` from a `PropertyIterator`.
`static <T> Iterator<T>`	`singleton(T element)`	Returns an iterator containing the single element `element` of type `T`.
`static <S,R> Iterator<R>`	`transformIterator(Iterator<S> iterator, Transformer<S,R> transformer)`	Returns an iterator with elements of an original `iterator` transformed by a `transformer`.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - singleton
```
public static <T> Iterator<T> singleton(T element)
```
    Returns an iterator containing the single element element of type T.
    
    Type Parameters:
    
    T -
    
    Parameters:
    
    element -
    
    Returns:
  - empty
```
public static <T> Iterator<T> empty()
```
    Returns an empty iterator of type T.
    
    Type Parameters:
    
    T -
    
    Returns:
  - iteratorChain
```
public static <T> Iterator<T> iteratorChain(Iterator<? extends T> iterator1,
                                            Iterator<? extends T> iterator2)
```
    Returns an iterator for the concatenation of iterator1 and iterator2.
    
    Type Parameters:
    
    T -
    
    Parameters:
    
    iterator1 -
    
    iterator2 -
    
    Returns:
  - iteratorChain
```
public static <T> Iterator<T> iteratorChain(Iterator<? extends T>[] iterators)
```
    Returns an iterator for the concatenation of all the given iterators.
    
    Type Parameters:
    
    T -
    
    Parameters:
    
    iterators -
    
    Returns:
  - iteratorChain
```
public static <T> Iterator<T> iteratorChain(Collection<Iterator<? extends T>> iterators)
```
    Returns an iterator for the concatenation of all the given iterators.
    
    Type Parameters:
    
    T -
    
    Parameters:
    
    iterators -
    
    Returns:
  - arrayIterator
```
public static <T> Iterator<T> arrayIterator(T[] values,
                                            int from,
                                            int to)
```
    Returns an iterator for elements of an array of values.
    
    Type Parameters:
    
    T -
    
    Parameters:
    
    values - the array to iterate over.
    
    from - the index to start iterating at.
    
    to - the index to finish iterating at.
    
    Returns:
  - filterIterator
```
@Deprecated
public static <T> Iterator<T> filterIterator(Iterator<? extends T> iterator,
                                             Predicate<? super T> predicate)
```
    Deprecated.
    use filterIterator(Iterator, java.util.function.Predicate) instead
    
    Returns an iterator with elements from an original iterator where the given predicate matches removed.
    
    Type Parameters:
    
    T -
    
    Parameters:
    
    iterator -
    
    predicate -
    
    Returns:
  - filterIterator
```
public static <T> Iterator<T> filterIterator(Iterator<? extends T> iterator,
                                             Predicate<? super T> predicate)
```
    Returns an iterator with elements from an original iterator where the given predicate matches removed.
    
    Type Parameters:
    
    T -
    
    Parameters:
    
    iterator -
    
    predicate -
    
    Returns:
  - transformIterator
```
public static <S,R> Iterator<R> transformIterator(Iterator<S> iterator,
                                                        Transformer<S,R> transformer)
```
    Returns an iterator with elements of an original iterator transformed by a transformer.
    
    Type Parameters:
    
    R -
    
    S -
    
    Parameters:
    
    iterator -
    
    transformer -
    
    Returns:
  - properties
```
public static Iterator<Property> properties(PropertyIterator propertyIterator)
```
    Returns an iterator of Property from a PropertyIterator.
    
    Parameters:
    
    propertyIterator -
    
    Returns:
  - nodes
```
public static Iterator<Node> nodes(NodeIterator nodeIterator)
```
    Returns an iterator of Node from a NodeIterator.
    
    Parameters:
    
    nodeIterator -
    
    Returns:

Class Iterators

Method Summary

Methods inherited from class java.lang.Object

Method Detail

singleton

empty

iteratorChain

iteratorChain

iteratorChain

arrayIterator

filterIterator

filterIterator

transformIterator

properties

nodes