com.aliyun.odps.counter

Class CounterGroup

java.lang.Object

com.aliyun.odps.counter.CounterGroup

All Implemented Interfaces:

Writable, Iterable<Counter>

public class CounterGroup
extends Object
implements Iterable<Counter>, Writable

Counter 组，由多个 Counter 计数器组成.

See Also:

Counter, Counters

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object genericRight)
Counter	findCounter(String counterName) 从 Counter 组查找 Counter对象， 如果不存在，自动创建 Counter对象 并加入此 Counter 组.
String	getDisplayName() 获取 Counter 组的显示名称
String	getName() 获取 Counter 组的名称
int	hashCode()
void	incrAllCounters(CounterGroup rightGroup) 将传入的 Counter 组里的 Counter 值与本 Counter 组的Counter值相加
Iterator<Counter>	iterator() 返回 Counter的迭代器.
void	readFields(DataInput in) 从 DataInput 读取 Counter 组.
void	resetAllCounters() 将本 Counter 组中的 Counter 值置为0
int	size() 返回 Counter 组包含的 Counter 数
void	write(DataOutput out) 将此 Counter 组写到 DataOutput.

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Method Detail

getName

public String getName()

获取 Counter 组的名称

Returns:

Counter 组的名称

getDisplayName

public String getDisplayName()

获取 Counter 组的显示名称

Returns:

Counter 组的显示名称

findCounter

public Counter findCounter(String counterName)

从 Counter 组查找 Counter对象， 如果不存在，自动创建 Counter对象 并加入此 Counter 组.

Parameters:

counterName - 查找的Counter名称

Returns:

查找到的Counter对象

iterator

public Iterator<Counter> iterator()

返回 Counter的迭代器.

Specified by:

iterator in interface Iterable<Counter>

Returns:

Counter的迭代器

size

public int size()

返回 Counter 组包含的 Counter 数

Returns:

包含的 Counter 数

equals

public boolean equals(Object genericRight)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

incrAllCounters

public void incrAllCounters(CounterGroup rightGroup)

将传入的 Counter 组里的 Counter 值与本 Counter 组的Counter值相加

Parameters:

rightGroup - 待加的 Counter 组

resetAllCounters

public void resetAllCounters()

将本 Counter 组中的 Counter 值置为0

write

public void write(DataOutput out)
           throws IOException

将此 Counter 组写到 DataOutput.

Specified by:

write in interface Writable

Throws:

IOException

readFields

public void readFields(DataInput in)
                throws IOException

从 DataInput 读取 Counter 组.

Specified by:

readFields in interface Writable

Throws:

IOException