org.jrdf.util.btree
Class DefaultRecordComparator

java.lang.Object
  org.jrdf.util.btree.DefaultRecordComparator

All Implemented Interfaces:

RecordComparator

public class DefaultRecordComparator
extends Object
implements RecordComparator

A BTreeValueComparator that compares values with eachother by comparing all of their bytes.

Author:

Arjohn Kampman

Constructor Summary

DefaultRecordComparator()

Method Summary

int	compareBTreeValues(byte[] key, byte[] data, int offset, int length) Compares the supplied key to the value of length length, starting at offset offset in the supplied data array.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultRecordComparator

public DefaultRecordComparator()

Method Detail

compareBTreeValues

public int compareBTreeValues(byte[] key,
                              byte[] data,
                              int offset,
                              int length)

Description copied from interface: RecordComparator

Compares the supplied key to the value of length length, starting at offset offset in the supplied data array.

Specified by:

compareBTreeValues in interface RecordComparator

Parameters:

key - A byte array representing the search key.

data - A byte array containing the value to compare the key to.

offset - The offset (0-based) of the value in data.

length - The length of the value.

Returns:

A negative integer when the key is smaller than the value, a positive integer when the key is larger than the value, or 0 when the key is equal to the value.