com.aliyun.odps.io

Class ShortWritable

java.lang.Object

com.aliyun.odps.io.ShortWritable

All Implemented Interfaces:

Writable, WritableComparable<ShortWritable>, Comparable<ShortWritable>

public class ShortWritable
extends Object
implements WritableComparable<ShortWritable>

ShortWritable 提供了 smallint 的 Writable 和 WritableComparable 的实现

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ShortWritable.Comparator ShortWritable 对象的 WritableComparator 自然顺序实现（升序）.

Constructor Summary

Constructors

Constructor and Description
ShortWritable()
ShortWritable(short value)

Method Summary

Modifier and Type	Method and Description
int	compareTo(ShortWritable o) 比较两个 ShortWritable 的值.
boolean	equals(Object o) 判断两个 ShortWritable 是否相等.
short	get()
int	hashCode() 计算哈希值，直接返回此 ShortWritable 的值.
void	readFields(DataInput in) 从指定的 DataInput in 反序列化.
void	set(short value)
String	toString()
void	write(DataOutput out) 序列化到指定的 DataOutput out.

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

ShortWritable

public ShortWritable()

ShortWritable

public ShortWritable(short value)

Method Detail

write

public void write(DataOutput out)
           throws IOException

序列化到指定的 DataOutput out.

Specified by:

write in interface Writable

Parameters:

out -

Throws:

IOException

readFields

public void readFields(DataInput in)
                throws IOException

从指定的 DataInput in 反序列化.

Specified by:

readFields in interface Writable

Parameters:

in -

Throws:

IOException

equals

public boolean equals(Object o)

判断两个 ShortWritable 是否相等. 如果两个都是 ShortWritable 且值相等，返回true，否则返回false

Overrides:

equals in class Object

Parameters:

o -

Returns:

hashCode

public int hashCode()

计算哈希值，直接返回此 ShortWritable 的值.

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object

compareTo

public int compareTo(ShortWritable o)

比较两个 ShortWritable 的值.

Specified by:

compareTo in interface Comparable<ShortWritable>

Parameters:

o - 比较对象

Returns:

(this < o ? -1 : (this == o) ? 0 ：1))

get

public short get()

set

public void set(short value)