org.apache.hadoop.hbase.filter

Class BinaryComponentComparator

java.lang.Object

org.apache.hadoop.hbase.filter.ByteArrayComparable

org.apache.hadoop.hbase.filter.BinaryComponentComparator

All Implemented Interfaces:

Comparable<byte[]>

@InterfaceAudience.Public
public class BinaryComponentComparator
extends ByteArrayComparable

A comparator which compares against a specified byte array, but only compares specific portion of the byte array. For the rest it is similar to BinaryComparator.

Field Summary

Fields

Modifier and Type	Field and Description
private int	offset

Fields inherited from class org.apache.hadoop.hbase.filter.ByteArrayComparable

value

Constructor Summary

Constructors

Constructor and Description
BinaryComponentComparator(byte[] value, int offset) Constructor

Method Summary

Modifier and Type	Method and Description
(package private) boolean	areSerializedFieldsEqual(ByteArrayComparable other)
int	compareTo(byte[] value)
int	compareTo(byte[] value, int offset, int length) Special compareTo method for subclasses, to avoid copying byte[] unnecessarily.
boolean	equals(Object other)
int	hashCode()
static BinaryComponentComparator	parseFrom(byte[] pbBytes)
byte[]	toByteArray()

Methods inherited from class org.apache.hadoop.hbase.filter.ByteArrayComparable

compareTo, getValue

Methods inherited from class java.lang.Object

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

Field Detail

offset

private int offset

Constructor Detail

BinaryComponentComparator

public BinaryComponentComparator(byte[] value,
                                 int offset)

Constructor

Parameters:

value - value of the component

offset - offset of the component from begining

Method Detail

compareTo

public int compareTo(byte[] value)

Specified by:

compareTo in interface Comparable<byte[]>

Overrides:

compareTo in class ByteArrayComparable

compareTo

public int compareTo(byte[] value,
                     int offset,
                     int length)

Description copied from class: ByteArrayComparable

Special compareTo method for subclasses, to avoid copying byte[] unnecessarily.

Specified by:

compareTo in class ByteArrayComparable

Parameters:

value - byte[] to compare

offset - offset into value

length - number of bytes to compare

Returns:

a negative integer, zero, or a positive integer as this object is less than, equal to, or greater than the specified object.

equals

public boolean equals(Object other)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toByteArray

public byte[] toByteArray()

Specified by:

toByteArray in class ByteArrayComparable

Returns:

The comparator serialized using pb

parseFrom

public static BinaryComponentComparator parseFrom(byte[] pbBytes)
                                           throws DeserializationException

Parameters:

pbBytes - A pb serialized BinaryComponentComparator instance

Returns:

An instance of BinaryComponentComparator made from bytes

Throws:

DeserializationException - DeserializationException

See Also:

toByteArray()

areSerializedFieldsEqual

boolean areSerializedFieldsEqual(ByteArrayComparable other)

Overrides:

areSerializedFieldsEqual in class ByteArrayComparable

Parameters:

other - paramemter to compare against

Returns:

true if and only if the fields of the comparator that are serialized are equal to the corresponding fields in other. Used for testing.