AbstractEvaluator.CommonKeyIterator (QDL root module 1.6.2.3 API)

java.lang.Object
- org.qdl_lang.evaluate.AbstractEvaluator.CommonKeyIterator

All Implemented Interfaces:

Iterator<QDLKey>

Enclosing class:

AbstractEvaluator
```
public static class AbstractEvaluator.CommonKeyIterator
extends Object
implements Iterator<QDLKey>
```
An iterator for the keys that are common between stems. These are the keys of the final result of operations on stems. Contract is that this has a list of keys and add(StemKeys) will add the set to the list. When this iterates, it iterates over this list and looks for a key.

Constructor Summary

Constructors
Constructor Description

CommonKeyIterator()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`add(StemKeys keys)`
`protected boolean`	`allHaveValue(Object value)`
`boolean`	`hasNext()`
`QDLKey`	`next()`
`protected void`	`reset()`	Since `next()` has to peek inside of the iterator to tell if the next key is really valid, `hasNext()` consumes the iterator.

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

- Constructor Detail
  - CommonKeyIterator
```
public CommonKeyIterator()
```
- Method Detail
  - add
```
public void add(StemKeys keys)
```
  - hasNext
```
public boolean hasNext()
```
    Specified by:
    
    hasNext in interface Iterator<QDLKey>
  - reset
```
protected void reset()
```
    Since next() has to peek inside of the iterator to tell if the next key is really valid, hasNext() consumes the iterator. This resets the iterator so hasNext() works from the start.
  - allHaveValue
```
protected boolean allHaveValue(Object value)
```
  - next
```
public QDLKey next()
```
    Specified by:
    
    next in interface Iterator<QDLKey>