org.apache.hadoop.io

类 BinaryComparable

java.lang.Object

org.apache.hadoop.io.BinaryComparable

所有已实现的接口:

Comparable<BinaryComparable>

直接已知子类:

BytesWritable, Text

public abstract class BinaryComparable
extends Object
implements Comparable<BinaryComparable>

Interface supported by WritableComparable types supporting ordering/permutation by a representative set of bytes.

构造器概要

构造器

构造器和说明
BinaryComparable()

方法概要

方法

限定符和类型	方法和说明
int	compareTo(BinaryComparable other) Compare bytes from {#getBytes()}.
int	compareTo(byte[] other, int off, int len) Compare bytes from {#getBytes()} to those provided.
boolean	equals(Object other) Return true if bytes from {#getBytes()} match.
abstract byte[]	getBytes() Return representative byte array for this instance.
abstract int	getLength() Return n st bytes 0..n-1 from {#getBytes()} are valid.
int	hashCode() Return a hash of the bytes returned from {#getBytes()}.

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

BinaryComparable

public BinaryComparable()

方法详细资料

getLength

public abstract int getLength()

Return n st bytes 0..n-1 from {#getBytes()} are valid.

getBytes

public abstract byte[] getBytes()

Return representative byte array for this instance.

compareTo

public int compareTo(BinaryComparable other)

Compare bytes from {#getBytes()}.

指定者:

compareTo 在接口中 Comparable<BinaryComparable>

另请参阅:

WritableComparator.compareBytes(byte[],int,int,byte[],int,int)

compareTo

public int compareTo(byte[] other,
            int off,
            int len)

Compare bytes from {#getBytes()} to those provided.

equals

public boolean equals(Object other)

Return true if bytes from {#getBytes()} match.

覆盖:

equals 在类中 Object

hashCode

public int hashCode()

Return a hash of the bytes returned from {#getBytes()}.

覆盖:

hashCode 在类中 Object

另请参阅:

WritableComparator.hashBytes(byte[],int)