com.yishuifengxiao.common.crawler.cache

Class InMemoryRequestCache

java.lang.Object

com.yishuifengxiao.common.crawler.cache.InMemoryRequestCache

All Implemented Interfaces:

RequestCache

public class InMemoryRequestCache
extends Object
implements RequestCache

基于内存实现的请求任务缓存器

Version:

1.0.0

Author:

yishui

Constructor Summary

Constructors

Constructor and Description
InMemoryRequestCache()

Method Summary

Modifier and Type	Method and Description
boolean	exist(Task task, Request request) 先查找请求任务是否在集合中存在
long	getCount(Task task) 获取指定缓存集合的请求任务数量
boolean	lookAndCache(Task task, Request request) 先查找请求任务是否在集合中存在,然后将该请求任务存储到此集合中
void	remove(Task task) 移除指定的缓存集合
void	save(Task task, Request request) 将请求任务存储到指定的集合名中

Methods inherited from class java.lang.Object

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

Constructor Detail

InMemoryRequestCache

public InMemoryRequestCache()

Method Detail

save

public void save(Task task,
                 Request request)

Description copied from interface: RequestCache

将请求任务存储到指定的集合名中

Specified by:

save in interface RequestCache

Parameters:

task - 风铃虫任务

request - 请求任务

lookAndCache

public boolean lookAndCache(Task task,
                            Request request)

Description copied from interface: RequestCache

先查找请求任务是否在集合中存在,然后将该请求任务存储到此集合中

Specified by:

lookAndCache in interface RequestCache

Parameters:

task - 风铃虫任务

request - 请求任务

Returns:

如果存在则返回为true，否则为fasle

exist

public boolean exist(Task task,
                     Request request)

Description copied from interface: RequestCache

先查找请求任务是否在集合中存在

Specified by:

exist in interface RequestCache

Parameters:

task - 风铃虫任务

request - 请求任务

Returns:

如果存在则返回为true，否则为fasle

remove

public void remove(Task task)

Description copied from interface: RequestCache

移除指定的缓存集合

Specified by:

remove in interface RequestCache

Parameters:

task - 风铃虫任务

getCount

public long getCount(Task task)

Description copied from interface: RequestCache

获取指定缓存集合的请求任务数量

Specified by:

getCount in interface RequestCache

Parameters:

task - 风铃虫任务

Returns:

缓存集合里请求任务值的数量