org.rocksdb

类 DirectSlice

java.lang.Object

org.rocksdb.AbstractNativeReference

org.rocksdb.RocksMutableObject

org.rocksdb.AbstractSlice<java.nio.ByteBuffer>

org.rocksdb.DirectSlice

所有已实现的接口:

java.lang.AutoCloseable

public class DirectSlice
extends AbstractSlice<java.nio.ByteBuffer>

Base class for slices which will receive direct ByteBuffer based access to the underlying data.

ByteBuffer backed slices typically perform better with larger keys and values. When using smaller keys and values consider using @see org.rocksdb.Slice

字段概要

字段

限定符和类型	字段和说明
static DirectSlice	NONE

构造器概要

构造器

构造器和说明
DirectSlice(java.nio.ByteBuffer data) Constructs a slice where the data is read from the provided ByteBuffer
DirectSlice(java.nio.ByteBuffer data, int length) Constructs a slice where the data is read from the provided ByteBuffer up to a certain length
DirectSlice(java.lang.String str) Constructs a slice where the data is taken from a String.

方法概要

限定符和类型	方法和说明
void	clear() Clears the backing slice
protected java.nio.ByteBuffer	data0(long handle) Access to the data is provided by the subtype as it needs to handle the generic typing.
protected void	disposeInternal()
byte	get(int offset) Retrieves the byte at a specific offset from the underlying data
void	removePrefix(int n) Drops the specified n number of bytes from the start of the backing slice
void	setLength(int n)

从类继承的方法 org.rocksdb.AbstractSlice

compare, createNewSliceFromString, data, disposeInternal, empty, equals, hashCode, size, startsWith, toString, toString

从类继承的方法 org.rocksdb.RocksMutableObject

close, getNativeHandle, isOwningHandle, resetNativeHandle, setNativeHandle

从类继承的方法 java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

字段详细资料

NONE

public static final DirectSlice NONE

构造器详细资料

DirectSlice

public DirectSlice(java.lang.String str)

Constructs a slice where the data is taken from a String.

参数:

str - The string

DirectSlice

public DirectSlice(java.nio.ByteBuffer data,
                   int length)

Constructs a slice where the data is read from the provided ByteBuffer up to a certain length

参数:

data - The buffer containing the data

length - The length of the data to use for the slice

DirectSlice

public DirectSlice(java.nio.ByteBuffer data)

Constructs a slice where the data is read from the provided ByteBuffer

参数:

data - The bugger containing the data

方法详细资料

get

public byte get(int offset)

Retrieves the byte at a specific offset from the underlying data

参数:

offset - The (zero-based) offset of the byte to retrieve

返回:

the requested byte

clear

public void clear()

从类复制的说明: AbstractSlice

Clears the backing slice

指定者:

clear 在类中 AbstractSlice<java.nio.ByteBuffer>

removePrefix

public void removePrefix(int n)

从类复制的说明: AbstractSlice

Drops the specified n number of bytes from the start of the backing slice

指定者:

removePrefix 在类中 AbstractSlice<java.nio.ByteBuffer>

参数:

n - The number of bytes to drop

setLength

public void setLength(int n)

disposeInternal

protected void disposeInternal()

覆盖:

disposeInternal 在类中 RocksMutableObject

data0

protected final java.nio.ByteBuffer data0(long handle)

从类复制的说明: AbstractSlice

Access to the data is provided by the subtype as it needs to handle the generic typing.

指定者:

data0 在类中 AbstractSlice<java.nio.ByteBuffer>

参数:

handle - The address of the underlying native object.

返回:

Java typed access to the data.