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_

Constructor Summary

Constructors

Constructor and Description
Handler()

Method Summary

Modifier and Type	Method and Description
abstract void	delete(byte[] key)
abstract void	deleteRange(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	merge(byte[] key, byte[] value)
abstract void	put(byte[] key, byte[] value)
boolean	shouldContinue() shouldContinue is called by the underlying iterator WriteBatch::Iterate.

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(byte[] key,
                         byte[] value)

merge

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

delete

public abstract void delete(byte[] key)

deleteRange

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

logData

public abstract void logData(byte[] blob)

shouldContinue

public boolean shouldContinue()

shouldContinue is called by the underlying iterator WriteBatch::Iterate. 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.