Package org.codehaus.groovy.runtime.metaclass

Class ConcurrentReaderHashMap.HashIterator

java.lang.Object

org.codehaus.groovy.runtime.metaclass.ConcurrentReaderHashMap.HashIterator

All Implemented Interfaces:

Enumeration, Iterator

Direct Known Subclasses:

ConcurrentReaderHashMap.KeyIterator, ConcurrentReaderHashMap.ValueIterator

Enclosing class:

ConcurrentReaderHashMap

protected class ConcurrentReaderHashMap.HashIterator
extends Object
implements Iterator, Enumeration

Field Summary

Fields

Modifier and Type	Field	Description
protected Object	currentKey
protected Object	currentValue
protected ConcurrentReaderHashMap.Entry	entry
protected int	index
protected ConcurrentReaderHashMap.Entry	lastReturned
protected final ConcurrentReaderHashMap.Entry[]	tab

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	HashIterator()	Constructs a new HashIterator over a snapshot of the table.

Method Summary

Modifier and Type	Method	Description
boolean	hasMoreElements()	Returns whether there are more elements (Enumeration interface).
boolean	hasNext()	Returns whether there are more elements to iterate over.
Object	next()	Returns the next element in the iteration.
Object	nextElement()	Returns the next element (Enumeration interface).
void	remove()	Removes the last returned element from the map.
protected Object	returnValueOfNext()	Returns the value of the next element.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Enumeration

asIterator

Methods inherited from interface java.util.Iterator

forEachRemaining

Field Details

tab

protected final ConcurrentReaderHashMap.Entry[] tab

index

protected int index

entry

protected ConcurrentReaderHashMap.Entry entry

currentKey

protected Object currentKey

currentValue

protected Object currentValue

lastReturned

protected ConcurrentReaderHashMap.Entry lastReturned

Constructor Details

HashIterator

protected HashIterator()

Constructs a new HashIterator over a snapshot of the table.

Method Details

hasMoreElements

public boolean hasMoreElements()

Returns whether there are more elements (Enumeration interface).

Specified by:

hasMoreElements in interface Enumeration

Returns:

true if there are more elements, false otherwise

nextElement

public Object nextElement()

Returns the next element (Enumeration interface).

Specified by:

nextElement in interface Enumeration

Returns:

the next element

Throws:

NoSuchElementException - if there are no more elements

hasNext

public boolean hasNext()

Returns whether there are more elements to iterate over.

Specified by:

hasNext in interface Iterator

Returns:

true if there are more elements, false otherwise

returnValueOfNext

protected Object returnValueOfNext()

Returns the value of the next element. This method can be overridden by subclasses to return different values (e.g., just the key or just the value instead of the whole entry).

Returns:

the value to return for the next element

next

public Object next()

Returns the next element in the iteration.

Specified by:

next in interface Iterator

Returns:

the next element

Throws:

NoSuchElementException - if there are no more elements

remove

public void remove()

Removes the last returned element from the map.

Specified by:

remove in interface Iterator

Throws:

IllegalStateException - if next() has not been called or remove() has already been called after the last next() call