com.aliyun.odps.io

Class AbstractMapWritable

java.lang.Object

com.aliyun.odps.io.AbstractMapWritable

All Implemented Interfaces:

Configurable, Writable

Direct Known Subclasses:

MapWritable, SortedMapWritable

public abstract class AbstractMapWritable
extends Object
implements Writable, Configurable

MapWritable 和 SortedMapWritable 的基类。 在一个map实例中，能够添加的Writable的类型最多是127。

Method Summary

Modifier and Type	Method and Description
Configuration	getConf() 返回 Configuration对象
void	readFields(DataInput in) 从指定的 DataInput in 反序列化.
void	setConf(Configuration conf) 设置 Configuration
void	write(DataOutput out) 序列化到指定的 DataOutput out.

Methods inherited from class java.lang.Object

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

Method Detail

getConf

public Configuration getConf()

Description copied from interface: Configurable

返回 Configuration对象

Specified by:

getConf in interface Configurable

Returns:

the conf

setConf

public void setConf(Configuration conf)

Description copied from interface: Configurable

设置 Configuration

Specified by:

setConf in interface Configurable

Parameters:

conf - the conf to set

write

public void write(DataOutput out)
           throws IOException

Description copied from interface: Writable

序列化到指定的 DataOutput out.

Specified by:

write in interface Writable

Throws:

IOException

readFields

public void readFields(DataInput in)
                throws IOException

Description copied from interface: Writable

从指定的 DataInput in 反序列化.

Specified by:

readFields in interface Writable

Throws:

IOException