org.rocksdb

类 SstFileWriter

java.lang.Object

org.rocksdb.AbstractNativeReference

org.rocksdb.AbstractImmutableNativeReference

org.rocksdb.RocksObject

org.rocksdb.SstFileWriter

所有已实现的接口:

java.lang.AutoCloseable

public class SstFileWriter
extends RocksObject

SstFileWriter is used to create sst files that can be added to the database later. All keys in files generated by SstFileWriter will have sequence number = 0.

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
SstFileWriter(EnvOptions envOptions, Options options) SstFileWriter Constructor.

方法概要

限定符和类型	方法和说明
void	delete(byte[] key) Add a deletion key to currently opened file.
void	delete(DirectSlice key) Add a deletion key to currently opened file.
void	delete(Slice key) Add a deletion key to currently opened file.
protected void	disposeInternal(long handle)
long	fileSize() Return the current file size.
void	finish() Finish the process and close the sst file.
void	merge(byte[] key, byte[] value) Add a Merge key with value to currently opened file.
void	merge(DirectSlice key, DirectSlice value) Add a Merge key with value to currently opened file.
void	merge(Slice key, Slice value) Add a Merge key with value to currently opened file.
void	open(java.lang.String filePath) Prepare SstFileWriter to write to a file.
void	put(byte[] key, byte[] value) Add a Put key with value to currently opened file.
void	put(java.nio.ByteBuffer key, java.nio.ByteBuffer value) Add a Put key with value to currently opened file.
void	put(DirectSlice key, DirectSlice value) Add a Put key with value to currently opened file.
void	put(Slice key, Slice value) Add a Put key with value to currently opened file.

从类继承的方法 org.rocksdb.RocksObject

disposeInternal, 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

SstFileWriter

public SstFileWriter(EnvOptions envOptions,
                     Options options)

SstFileWriter Constructor.

参数:

envOptions - EnvOptions instance.

options - Options instance.

方法详细资料

open

public void open(java.lang.String filePath)
          throws RocksDBException

Prepare SstFileWriter to write to a file.

参数:

filePath - the location of file

抛出:

RocksDBException - thrown if error happens in underlying native library.

put

public void put(Slice key,
                Slice value)
         throws RocksDBException

Add a Put key with value to currently opened file.

参数:

key - the specified key to be inserted.

value - the value associated with the specified key.

抛出:

RocksDBException - thrown if error happens in underlying native library.

put

public void put(DirectSlice key,
                DirectSlice value)
         throws RocksDBException

Add a Put key with value to currently opened file.

参数:

key - the specified key to be inserted.

value - the value associated with the specified key.

抛出:

RocksDBException - thrown if error happens in underlying native library.

put

public void put(java.nio.ByteBuffer key,
                java.nio.ByteBuffer value)
         throws RocksDBException

Add a Put key with value to currently opened file.

参数:

key - the specified key to be inserted.

value - the value associated with the specified key.

抛出:

RocksDBException - thrown if error happens in underlying native library.

put

public void put(byte[] key,
                byte[] value)
         throws RocksDBException

Add a Put key with value to currently opened file.

参数:

key - the specified key to be inserted.

value - the value associated with the specified key.

抛出:

RocksDBException - thrown if error happens in underlying native library.

merge

public void merge(Slice key,
                  Slice value)
           throws RocksDBException

Add a Merge key with value to currently opened file.

参数:

key - the specified key to be merged.

value - the value to be merged with the current value for the specified key.

抛出:

RocksDBException - thrown if error happens in underlying native library.

merge

public void merge(byte[] key,
                  byte[] value)
           throws RocksDBException

Add a Merge key with value to currently opened file.

参数:

key - the specified key to be merged.

value - the value to be merged with the current value for the specified key.

抛出:

RocksDBException - thrown if error happens in underlying native library.

merge

public void merge(DirectSlice key,
                  DirectSlice value)
           throws RocksDBException

Add a Merge key with value to currently opened file.

参数:

key - the specified key to be merged.

value - the value to be merged with the current value for the specified key.

抛出:

RocksDBException - thrown if error happens in underlying native library.

delete

public void delete(Slice key)
            throws RocksDBException

Add a deletion key to currently opened file.

参数:

key - the specified key to be deleted.

抛出:

RocksDBException - thrown if error happens in underlying native library.

delete

public void delete(DirectSlice key)
            throws RocksDBException

Add a deletion key to currently opened file.

参数:

key - the specified key to be deleted.

抛出:

RocksDBException - thrown if error happens in underlying native library.

delete

public void delete(byte[] key)
            throws RocksDBException

Add a deletion key to currently opened file.

参数:

key - the specified key to be deleted.

抛出:

RocksDBException - thrown if error happens in underlying native library.

finish

public void finish()
            throws RocksDBException

Finish the process and close the sst file.

抛出:

RocksDBException - thrown if error happens in underlying native library.

fileSize

public long fileSize()
              throws RocksDBException

Return the current file size.

返回:

the current file size.

抛出:

RocksDBException - thrown if error happens in underlying native library.

disposeInternal

protected final void disposeInternal(long handle)

指定者:

disposeInternal 在类中 RocksObject