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java.lang.Objectnet.sf.jabb.util.stat.FrequencyCounter
net.sf.jabb.util.stat.BasicFrequencyCounter
public class BasicFrequencyCounter
频次计数器
| Field Summary | |
|---|---|
protected PutOnGetMap<Long,AtomicLong> |
counters
|
protected long |
granularity
|
protected long |
purgeBefore
|
protected Object |
recordLock
|
| Constructor Summary | |
|---|---|
BasicFrequencyCounter()
创建一个不对历史数据进行自动清除,且不针对时间颗粒度 (比如,对于一批短信,对不同长度短信各有多少条进行统计)的实例。 |
|
BasicFrequencyCounter(FrequencyCounterDefinition definition)
根据配置信息创建一个实例。 |
|
BasicFrequencyCounter(long granularity,
TimeUnit unit)
创建一个不对历史数据进行自动清除的实例。 |
|
BasicFrequencyCounter(long granularity,
TimeUnit unit,
long purgePeriod,
TimeUnit purgeUnit)
创建一个实例,如果purgePeriod参数不为0则会自动进行历史数据清除。 |
|
| Method Summary | |
|---|---|
void |
count(long when,
int times)
记录在某时刻发生了多少次。 |
long |
getCount(long when)
获取在某时刻的计数值。 |
long |
getCount(long fromWhen,
long toWhen,
boolean fromInclusive,
boolean toInclusive)
获得在指定时间范围内的总频次 |
Map<Long,AtomicLong> |
getCounts()
获得全部计数统计 |
void |
purge(long tillWhen)
删除掉早于一定时间的记录 |
String |
toString()
转成String |
| Methods inherited from class net.sf.jabb.util.stat.FrequencyCounter |
|---|
count, count, count, count, count, getCount, getCount, getCount, getCount, getCount, getCount, getCount, purge, purge, purge, purge |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
| Field Detail |
|---|
protected PutOnGetMap<Long,AtomicLong> counters
protected long granularity
protected long purgeBefore
protected Object recordLock
| Constructor Detail |
|---|
public BasicFrequencyCounter(long granularity,
TimeUnit unit,
long purgePeriod,
TimeUnit purgeUnit)
granularity - 计数颗粒度unit - 颗粒度的单位purgePeriod - 历史数据的保留时间长度purgeUnit - 历史数据保留时间长度的单位
public BasicFrequencyCounter(long granularity,
TimeUnit unit)
granularity - 计数颗粒度unit - 颗粒度的单位public BasicFrequencyCounter()
public BasicFrequencyCounter(FrequencyCounterDefinition definition)
definition - 配置信息| Method Detail |
|---|
public void count(long when,
int times)
count in class FrequencyCounterwhen - 发生的时刻times - 次数public Map<Long,AtomicLong> getCounts()
public long getCount(long when)
getCount in class FrequencyCounterwhen - 时刻
public long getCount(long fromWhen,
long toWhen,
boolean fromInclusive,
boolean toInclusive)
getCount in class FrequencyCounterfromWhen - 开始时间toWhen - 结束时间fromInclusive - 是否包含开始时间toInclusive - 是否包含结束时间
public void purge(long tillWhen)
purge in class FrequencyCountertillWhen - 清除到哪个时间点为止public String toString()
toString in class Object
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