org.rocksdb

类 SstFileMetaData

java.lang.Object

org.rocksdb.SstFileMetaData

直接已知子类:

LiveFileMetaData

public class SstFileMetaData
extends java.lang.Object

The metadata that describes a SST file.

构造器概要

构造器

限定符	构造器和说明
protected	SstFileMetaData(java.lang.String fileName, java.lang.String path, long size, long smallestSeqno, long largestSeqno, byte[] smallestKey, byte[] largestKey, long numReadsSampled, boolean beingCompacted, long numEntries, long numDeletions) Called from JNI C++

方法概要

限定符和类型	方法和说明
boolean	beingCompacted() Returns true if the file is currently being compacted.
java.lang.String	fileName() Get the name of the file.
byte[]	largestKey() Get the largest user defined key in the file.
long	largestSeqno() Get the largest sequence number in file.
long	numDeletions() Get the number of deletions.
long	numEntries() Get the number of entries.
long	numReadsSampled() Get the number of times the file has been read.
java.lang.String	path() Get the full path where the file locates.
long	size() Get the file size in bytes.
byte[]	smallestKey() Get the smallest user defined key in the file.
long	smallestSeqno() Get the smallest sequence number in file.

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

SstFileMetaData

protected SstFileMetaData(java.lang.String fileName,
                          java.lang.String path,
                          long size,
                          long smallestSeqno,
                          long largestSeqno,
                          byte[] smallestKey,
                          byte[] largestKey,
                          long numReadsSampled,
                          boolean beingCompacted,
                          long numEntries,
                          long numDeletions)

Called from JNI C++

参数:

fileName - the file name

path - the file path

size - the size of the file

smallestSeqno - the smallest sequence number

largestSeqno - the largest sequence number

smallestKey - the smallest key

largestKey - the largest key

numReadsSampled - the number of reads sampled

beingCompacted - true if the file is being compacted, false otherwise

numEntries - the number of entries

numDeletions - the number of deletions

方法详细资料

fileName

public java.lang.String fileName()

Get the name of the file.

返回:

the name of the file.

path

public java.lang.String path()

Get the full path where the file locates.

返回:

the full path

size

public long size()

Get the file size in bytes.

返回:

file size

smallestSeqno

public long smallestSeqno()

Get the smallest sequence number in file.

返回:

the smallest sequence number

largestSeqno

public long largestSeqno()

Get the largest sequence number in file.

返回:

the largest sequence number

smallestKey

public byte[] smallestKey()

Get the smallest user defined key in the file.

返回:

the smallest user defined key

largestKey

public byte[] largestKey()

Get the largest user defined key in the file.

返回:

the largest user defined key

numReadsSampled

public long numReadsSampled()

Get the number of times the file has been read.

返回:

the number of times the file has been read

beingCompacted

public boolean beingCompacted()

Returns true if the file is currently being compacted.

返回:

true if the file is currently being compacted, false otherwise.

numEntries

public long numEntries()

Get the number of entries.

返回:

the number of entries.

numDeletions

public long numDeletions()

Get the number of deletions.

返回:

the number of deletions.