jdbm.helper

Class ObjectBAComparator

java.lang.Object

jdbm.helper.ObjectBAComparator

All Implemented Interfaces:

java.io.Serializable, java.util.Comparator

public final class ObjectBAComparator
extends java.lang.Object
implements java.util.Comparator, java.io.Serializable

Comparator for objects which have been serialized into byte arrays. In effect, it wraps another Comparator which compares object and provides transparent deserialization from byte array to object.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.Comparator	_comparator Wrapped comparator.
(package private) static long	serialVersionUID Version id for serialization.

Constructor Summary

Constructors

Constructor and Description
ObjectBAComparator(java.util.Comparator comparator) Construct an ObjectByteArrayComparator which wraps an Object Comparator.

Method Summary

Modifier and Type	Method and Description
int	compare(java.lang.Object obj1, java.lang.Object obj2) Compare two objects.
static int	compareByteArray(byte[] thisKey, byte[] otherKey) Compare two byte arrays.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Comparator

comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Field Detail

serialVersionUID

static final long serialVersionUID

Version id for serialization.

See Also:

Constant Field Values

_comparator

private java.util.Comparator _comparator

Wrapped comparator.

Constructor Detail

ObjectBAComparator

public ObjectBAComparator(java.util.Comparator comparator)

Construct an ObjectByteArrayComparator which wraps an Object Comparator.

Parameters:

comparator - Object comparator.

Method Detail

compare

public int compare(java.lang.Object obj1,
                   java.lang.Object obj2)

Compare two objects.

Specified by:

compare in interface java.util.Comparator

Parameters:

obj1 - First object

obj2 - Second object

Returns:

1 if obj1 > obj2, 0 if obj1 == obj2, -1 if obj1 < obj2

compareByteArray

public static int compareByteArray(byte[] thisKey,
                                   byte[] otherKey)

Compare two byte arrays.