org.apache.hadoop.hbase.filter

类 NullComparator

java.lang.Object

org.apache.hadoop.hbase.filter.ByteArrayComparable

org.apache.hadoop.hbase.filter.NullComparator

所有已实现的接口:

Comparable<byte[]>

@InterfaceAudience.Public
@InterfaceStability.Stable
public class NullComparator
extends ByteArrayComparable

A binary comparator which lexicographically compares against the specified byte array using Bytes.compareTo(byte[], byte[]).

构造器概要

构造器

构造器和说明
NullComparator()

方法概要

方法

限定符和类型	方法和说明
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 obj)
int	hashCode()
static NullComparator	parseFrom(byte[] pbBytes)
byte[]	toByteArray()

从类继承的方法 org.apache.hadoop.hbase.filter.ByteArrayComparable

getValue

从类继承的方法 java.lang.Object

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

构造器详细资料

NullComparator

public NullComparator()

方法详细资料

compareTo

public int compareTo(byte[] value)

指定者:

compareTo 在接口中 Comparable<byte[]>

覆盖:

compareTo 在类中 ByteArrayComparable

equals

public boolean equals(Object obj)

覆盖:

equals 在类中 Object

hashCode

public int hashCode()

覆盖:

hashCode 在类中 Object

compareTo

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

从类复制的说明: ByteArrayComparable

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

指定者:

compareTo 在类中 ByteArrayComparable

参数:

value - byte[] to compare

offset - offset into value

length - number of bytes to compare

返回:

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

toByteArray

public byte[] toByteArray()

指定者:

toByteArray 在类中 ByteArrayComparable

返回:

The comparator serialized using pb

parseFrom

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

参数:

pbBytes - A pb serialized NullComparator instance

返回:

An instance of NullComparator made from bytes

抛出:

DeserializationException

另请参阅:

toByteArray()