Package org.aoju.bus.core.text.bloom

Class AbstractFilter

java.lang.Object

org.aoju.bus.core.text.bloom.AbstractFilter

All Implemented Interfaces:

Serializable, BloomFilter

Direct Known Subclasses:

FuncFilter

public abstract class AbstractFilter
extends Object
implements BloomFilter

抽象Bloom过滤器

Since:

Java 17+

Author:

Kimi Liu

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected int	size

Constructor Summary

Constructors

Constructor	Description
AbstractFilter(int size)	构造

Method Summary

Modifier and Type	Method	Description
boolean	add(String text)	在boolean的bitMap中增加一个字符串 如果存在就返回false .如果不存在.先增加这个字符串.再返回true
boolean	contains(String text)
abstract int	hash(String text)	自定义Hash方法

Methods inherited from class java.lang.Object

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

Field Details

size

protected int size

Constructor Details

AbstractFilter

public AbstractFilter(int size)

构造

Parameters:

size - 容量

Method Details

contains

public boolean contains(String text)

Specified by:

contains in interface BloomFilter

Parameters:

text - 字符串

Returns:

判断一个字符串是否bitMap中存在

add

public boolean add(String text)

Description copied from interface: BloomFilter

在boolean的bitMap中增加一个字符串 如果存在就返回false .如果不存在.先增加这个字符串.再返回true

Specified by:

add in interface BloomFilter

Parameters:

text - 字符串

Returns:

是否加入成功，如果存在就返回false .如果不存在返回true

hash

public abstract int hash(String text)

自定义Hash方法

Parameters:

text - 字符串

Returns:

HashCode