org.rocksdb

类 BloomFilter

java.lang.Object

org.rocksdb.AbstractNativeReference

org.rocksdb.AbstractImmutableNativeReference

org.rocksdb.RocksObject

org.rocksdb.Filter

org.rocksdb.BloomFilter

所有已实现的接口:

java.lang.AutoCloseable

public class BloomFilter
extends Filter

Bloom filter policy that uses a bloom filter with approximately the specified number of bits per key.

Note: if you are using a custom comparator that ignores some parts of the keys being compared, you must not use this BloomFilter and must provide your own FilterPolicy that also ignores the corresponding parts of the keys. For example, if the comparator ignores trailing spaces, it would be incorrect to use a FilterPolicy (like BloomFilter) that does not ignore trailing spaces in keys.

字段概要

从类继承的字段 org.rocksdb.RocksObject

nativeHandle_

从类继承的字段 org.rocksdb.AbstractImmutableNativeReference

owningHandle_

构造器概要

构造器

构造器和说明
BloomFilter() BloomFilter constructor Callers must delete the result after any database that is using the result has been closed.
BloomFilter(double bitsPerKey) BloomFilter constructor bits_per_key: bits per key in bloom filter.
BloomFilter(double bitsPerKey, boolean IGNORED_useBlockBasedMode) BloomFilter constructor bits_per_key: bits per key in bloom filter.

方法概要

从类继承的方法 org.rocksdb.Filter

disposeInternal, disposeInternal

从类继承的方法 org.rocksdb.RocksObject

getNativeHandle

从类继承的方法 org.rocksdb.AbstractImmutableNativeReference

close, disOwnNativeHandle, isOwningHandle

从类继承的方法 java.lang.Object

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

构造器详细资料

BloomFilter

public BloomFilter()

BloomFilter constructor

Callers must delete the result after any database that is using the result has been closed.

BloomFilter

public BloomFilter(double bitsPerKey)

BloomFilter constructor

bits_per_key: bits per key in bloom filter. A good value for bits_per_key is 9.9, which yields a filter with ~ 1% false positive rate.

Callers must delete the result after any database that is using the result has been closed.

参数:

bitsPerKey - number of bits to use

BloomFilter

public BloomFilter(double bitsPerKey,
                   boolean IGNORED_useBlockBasedMode)

BloomFilter constructor

bits_per_key: bits per key in bloom filter. A good value for bits_per_key is 10, which yields a filter with ~ 1% false positive rate.

default bits_per_key: 10

Callers must delete the result after any database that is using the result has been closed.

参数:

bitsPerKey - number of bits to use

IGNORED_useBlockBasedMode - obsolete, ignored parameter