Package org.rocksdb

Class WriteBatch.Handler

java.lang.Object

org.rocksdb.AbstractNativeReference

org.rocksdb.AbstractImmutableNativeReference

org.rocksdb.RocksCallbackObject

org.rocksdb.WriteBatch.Handler

All Implemented Interfaces:

java.lang.AutoCloseable

Enclosing class:

WriteBatch

public abstract static class WriteBatch.Handler
extends RocksCallbackObject

Handler callback for iterating over the contents of a batch.

Field Summary

Fields inherited from class org.rocksdb.RocksCallbackObject

nativeHandle_

Fields inherited from class org.rocksdb.AbstractImmutableNativeReference

owningHandle_

Constructor Summary

Constructors

Constructor	Description
Handler()

Method Summary

Modifier and Type	Method	Description
abstract void	delete(byte[] key)
abstract void	delete(int columnFamilyId, byte[] key)
abstract void	deleteRange(byte[] beginKey, byte[] endKey)
abstract void	deleteRange(int columnFamilyId, byte[] beginKey, byte[] endKey)
protected long	initializeNative(long... nativeParameterHandles)	Construct the Native C++ object which will callback to our object methods
abstract void	logData(byte[] blob)
abstract void	markBeginPrepare()
abstract void	markCommit(byte[] xid)
abstract void	markEndPrepare(byte[] xid)
abstract void	markNoop(boolean emptyBatch)
abstract void	markRollback(byte[] xid)
abstract void	merge(byte[] key, byte[] value)
abstract void	merge(int columnFamilyId, byte[] key, byte[] value)
abstract void	put(byte[] key, byte[] value)
abstract void	put(int columnFamilyId, byte[] key, byte[] value)
abstract void	putBlobIndex(int columnFamilyId, byte[] key, byte[] value)
boolean	shouldContinue()	shouldContinue is called by the underlying iterator WriteBatch.iterate(Handler).
abstract void	singleDelete(byte[] key)
abstract void	singleDelete(int columnFamilyId, byte[] key)

Methods inherited from class org.rocksdb.RocksCallbackObject

disposeInternal

Methods inherited from class org.rocksdb.AbstractImmutableNativeReference

close, disOwnNativeHandle, isOwningHandle

Methods inherited from class org.rocksdb.AbstractNativeReference

dispose, finalize

Methods inherited from class java.lang.Object

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

Constructor Detail

Handler

public Handler()

Method Detail

initializeNative

protected long initializeNative(long... nativeParameterHandles)

Description copied from class: RocksCallbackObject

Construct the Native C++ object which will callback to our object methods

Specified by:

initializeNative in class RocksCallbackObject

Parameters:

nativeParameterHandles - An array of native handles for any parameter objects that are needed during construction

Returns:

The native handle of the C++ object which will callback to us

put

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

Throws:

RocksDBException

put

public abstract void put(byte[] key,
                         byte[] value)

merge

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

Throws:

RocksDBException

merge

public abstract void merge(byte[] key,
                           byte[] value)

delete

public abstract void delete(int columnFamilyId,
                            byte[] key)
                     throws RocksDBException

Throws:

RocksDBException

delete

public abstract void delete(byte[] key)

singleDelete

public abstract void singleDelete(int columnFamilyId,
                                  byte[] key)
                           throws RocksDBException

Throws:

RocksDBException

singleDelete

public abstract void singleDelete(byte[] key)

deleteRange

public abstract void deleteRange(int columnFamilyId,
                                 byte[] beginKey,
                                 byte[] endKey)
                          throws RocksDBException

Throws:

RocksDBException

deleteRange

public abstract void deleteRange(byte[] beginKey,
                                 byte[] endKey)

logData

public abstract void logData(byte[] blob)

putBlobIndex

public abstract void putBlobIndex(int columnFamilyId,
                                  byte[] key,
                                  byte[] value)
                           throws RocksDBException

Throws:

RocksDBException

markBeginPrepare

public abstract void markBeginPrepare()
                               throws RocksDBException

Throws:

RocksDBException

markEndPrepare

public abstract void markEndPrepare(byte[] xid)
                             throws RocksDBException

Throws:

RocksDBException

markNoop

public abstract void markNoop(boolean emptyBatch)
                       throws RocksDBException

Throws:

RocksDBException

markRollback

public abstract void markRollback(byte[] xid)
                           throws RocksDBException

Throws:

RocksDBException

markCommit

public abstract void markCommit(byte[] xid)
                         throws RocksDBException

Throws:

RocksDBException

shouldContinue

public boolean shouldContinue()

shouldContinue is called by the underlying iterator WriteBatch.iterate(Handler). If it returns false, iteration is halted. Otherwise, it continues iterating. The default implementation always returns true.

Returns:

boolean value indicating if the iteration is halted.