org.melati.util
Class HttpHeader.FieldIterator

java.lang.Object
  org.melati.util.HttpHeader.FieldIterator

All Implemented Interfaces:

Enumeration, Iterator

Direct Known Subclasses:

HttpHeader.TokenAndQValueIterator, HttpHeader.WordIterator

Enclosing class:

HttpHeader

public abstract class HttpHeader.FieldIterator
extends Object
implements Iterator, Enumeration

Abstract enumeration of fields.

Subtypes decide what type of token to return and how to represent it.

This class serves to remove doubts about whether we should and can implement Iterator or Enumeration and proves itself unnecessary ;-). But we can factor stuff out and re-use it later.

Actually, it also removes the need to think about exceptions in subtypes.

Constructor Summary

HttpHeader.FieldIterator()

Method Summary

boolean	hasMoreElements()
boolean	hasNext()
Object	next() Return the next element or an exception.
Object	nextElement()
abstract Object	nextToken()
void	remove()

Methods inherited from class java.lang.Object

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

Constructor Detail

HttpHeader.FieldIterator

public HttpHeader.FieldIterator()

Method Detail

hasMoreElements

public final boolean hasMoreElements()

Specified by:

hasMoreElements in interface Enumeration

See Also:

Enumeration.hasMoreElements()

nextElement

public final Object nextElement()

Specified by:

nextElement in interface Enumeration

See Also:

Enumeration.nextElement()

hasNext

public final boolean hasNext()

Specified by:

hasNext in interface Iterator

See Also:

Iterator.hasNext(), next()

remove

public void remove()
            throws UnsupportedOperationException

Specified by:

remove in interface Iterator

Throws:

UnsupportedOperationException

See Also:

Iterator.remove()

next

public Object next()

Return the next element or an exception.

Specified by:

next in interface Iterator

Returns:

An exception if an object of the anticipated type cannot be returned

nextToken

public abstract Object nextToken()
                          throws HttpHeader.HttpHeaderException

Returns:

the next token or throws an exception

Throws:

HttpHeader.HttpHeaderException