Metadata.Hierarchy.ItrAnc (ELKI: Environment for DeveLoping KDD-Applications Supported by Index-Structures)

java.lang.Object
- elki.result.Metadata.Hierarchy.ItrAnc

All Implemented Interfaces:

It<java.lang.Object>, Iter

Enclosing class:

Metadata.Hierarchy
```
private class Metadata.Hierarchy.ItrAnc
extends java.lang.Object
implements It<java.lang.Object>
```
Iterator over all ancestors.

Author:

Erich Schubert

Field Summary

Fields
Modifier and Type	Field	Description
`(package private) java.lang.Object`	`extra`	Additional object to return as first result.
`(package private) It<java.lang.Object>`	`parentiter`	Iterator over children
`(package private) It<java.lang.Object>`	`subiter`	Iterator of current child

Constructor Summary

Constructors
Constructor Description

ItrAnc()
Constructor for descendants-only.

ItrAnc(java.lang.Object extra)
Constructor with additional element.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`It<java.lang.Object>`	`advance()`	Moves the iterator forward to the next entry.
`java.lang.Object`	`get()`	Access the current object.
`private boolean`	`lookahead()`
`boolean`	`valid()`	Returns true if the iterator currently points to a valid object.

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

Methods inherited from interface elki.utilities.datastructures.iterator.It
collect, filter, filter, find, forEach

- Field Detail
  - parentiter
```
final It<java.lang.Object> parentiter
```
    Iterator over children
  - subiter
```
It<java.lang.Object> subiter
```
    Iterator of current child
  - extra
```
java.lang.Object extra
```
    Additional object to return as first result.
- Constructor Detail
  - ItrAnc
```
ItrAnc()
```
    Constructor for descendants-only.
  - ItrAnc
```
ItrAnc(java.lang.Object extra)
```
    Constructor with additional element.
    
    Parameters:
    
    extra - Additional element (cannot be null).
- Method Detail
  - valid
```
public boolean valid()
```
    Description copied from interface: Iter
    
    Returns true if the iterator currently points to a valid object.
    
    Specified by:
    
    valid in interface Iter
    
    Returns:
    
    a boolean value, whether the position is valid.
  - advance
```
public It<java.lang.Object> advance()
```
    Description copied from interface: Iter
    
    Moves the iterator forward to the next entry.
    
    Specified by:
    
    advance in interface It<java.lang.Object>
    
    Specified by:
    
    advance in interface Iter
    
    Returns:
    
    The iterator itself.
  - lookahead
```
private boolean lookahead()
```
  - get
```
public java.lang.Object get()
```
    Description copied from interface: It
    
    Access the current object.
    
    Specified by:
    
    get in interface It<java.lang.Object>
    
    Returns:
    
    Current object