wt.util
Class SortedEnumeration

java.lang.Object
  wt.util.SortedEnumeration

All Implemented Interfaces:

Enumeration, Serializable

public class SortedEnumeration

extends Object

implements Enumeration, Serializable

An enumeration that returns objects in sorted order.

Supported API: true
Supported API: true

See Also:

Serialized Form

Nested Class Summary

(package private) static class	SortedEnumeration.SortEntry
(package private) static class	SortedEnumeration.SortPredicate

Field Summary

static int	ASCENDING
private int	count
static int	DESCENDING
private static long	serialVersionUID
private Object[]	sorted
private static String	versionID

Constructor Summary

SortedEnumeration(Enumeration source, CollationKeyFactory key_factory)
Construct a sorted Enumeration containing the elements of another Enumeration.

SortedEnumeration(Enumeration source, CollationKeyFactory key_factory, int order)
Construct a sorted Enumeration containing the elements of another Enumeration.

Method Summary

boolean	hasMoreElements() Supported API: true
Object	nextElement() Supported API: true
int	size() Return the number of elements remaining in the enumeration.

Methods inherited from class java.lang.Object

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

Field Detail

versionID

private static final String versionID

See Also:

Constant Field Values

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

ASCENDING

public static final int ASCENDING

See Also:

Constant Field Values

DESCENDING

public static final int DESCENDING

See Also:

Constant Field Values

sorted

private Object[] sorted

count

private int count

Constructor Detail

SortedEnumeration

public SortedEnumeration(Enumeration source,
                         CollationKeyFactory key_factory)

Construct a sorted Enumeration containing the elements of another Enumeration. Elements are sorted into ascending order.

Supported API: true

Parameters:

source - source Enumeration

SortedEnumeration

public SortedEnumeration(Enumeration source,
                         CollationKeyFactory key_factory,
                         int order)

Construct a sorted Enumeration containing the elements of another Enumeration.

Supported API: true

Parameters:

source - source Enumeration

order - sort order (ASCENDING or DECENDING)

Method Detail

hasMoreElements

public boolean hasMoreElements()

Supported API: true

Specified by:

hasMoreElements in interface Enumeration

nextElement

public Object nextElement()

Supported API: true

Specified by:

nextElement in interface Enumeration

size

public int size()

Return the number of elements remaining in the enumeration. Since each element of the underlying enumeration had to be accessed in order to sort them, the total number of elements is known.

Supported API: true

Returns:

number of elements remaining