org.rocksdb

类 RocksMutableObject

java.lang.Object

org.rocksdb.AbstractNativeReference

org.rocksdb.RocksMutableObject

所有已实现的接口:

java.lang.AutoCloseable

直接已知子类:

AbstractSlice

public abstract class RocksMutableObject
extends AbstractNativeReference

RocksMutableObject is an implementation of AbstractNativeReference whose reference to the underlying native C++ object can change.

The use of RocksMutableObject should be kept to a minimum, as it has synchronization overheads and introduces complexity. Instead it is recommended to use RocksObject where possible.

构造器概要

构造器

限定符	构造器和说明
protected	RocksMutableObject()
protected	RocksMutableObject(long nativeHandle)

方法概要

限定符和类型	方法和说明
void	close() Frees the underlying C++ object It is strong recommended that the developer calls this after they have finished using the object.
protected void	disposeInternal()
protected abstract void	disposeInternal(long handle)
protected long	getNativeHandle() Gets the value of the C++ pointer pointing to the underlying native C++ object
protected boolean	isOwningHandle() Returns true if we are responsible for freeing the underlying C++ object
void	resetNativeHandle(long newNativeHandle, boolean owningNativeHandle) Closes the existing handle, and changes the handle to the new handle
void	setNativeHandle(long nativeHandle, boolean owningNativeHandle) Sets the handle (C++ pointer) of the underlying C++ native object

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

RocksMutableObject

protected RocksMutableObject()

RocksMutableObject

protected RocksMutableObject(long nativeHandle)

方法详细资料

resetNativeHandle

public void resetNativeHandle(long newNativeHandle,
                              boolean owningNativeHandle)

Closes the existing handle, and changes the handle to the new handle

参数:

newNativeHandle - The C++ pointer to the new native object

owningNativeHandle - true if we own the new native object

setNativeHandle

public void setNativeHandle(long nativeHandle,
                            boolean owningNativeHandle)

Sets the handle (C++ pointer) of the underlying C++ native object

参数:

nativeHandle - The C++ pointer to the native object

owningNativeHandle - true if we own the native object

isOwningHandle

protected boolean isOwningHandle()

从类复制的说明: AbstractNativeReference

Returns true if we are responsible for freeing the underlying C++ object

指定者:

isOwningHandle 在类中 AbstractNativeReference

返回:

true if we are responsible to free the C++ object

getNativeHandle

protected long getNativeHandle()

Gets the value of the C++ pointer pointing to the underlying native C++ object

返回:

the pointer value for the native object

close

public final void close()

从类复制的说明: AbstractNativeReference

Frees the underlying C++ object

It is strong recommended that the developer calls this after they have finished using the object.

Note, that once an instance of AbstractNativeReference has been closed, calling any of its functions will lead to undefined behavior.

指定者:

close 在接口中 java.lang.AutoCloseable

指定者:

close 在类中 AbstractNativeReference

disposeInternal

protected void disposeInternal()

disposeInternal

protected abstract void disposeInternal(long handle)