org.rocksdb

Class RocksCallbackObject

java.lang.Object

org.rocksdb.AbstractNativeReference

org.rocksdb.AbstractImmutableNativeReference

org.rocksdb.RocksCallbackObject

All Implemented Interfaces:

AutoCloseable

Direct Known Subclasses:

AbstractCompactionFilterFactory, AbstractComparator, AbstractEventListener, AbstractTableFilter, AbstractTraceWriter, AbstractTransactionNotifier, AbstractWalFilter, Logger, WriteBatch.Handler

public abstract class RocksCallbackObject
extends AbstractImmutableNativeReference

RocksCallbackObject is similar to RocksObject but varies in its construction as it is designed for Java objects which have functions which are called from C++ via JNI. RocksCallbackObject is the base-class any RocksDB classes that acts as a callback from some underlying underlying native C++ rocksdb object. The use of RocksObject should always be preferred over RocksCallbackObject if callbacks are not required.

Field Summary

Fields

Modifier and Type	Field and Description
protected long	nativeHandle_

Fields inherited from class org.rocksdb.AbstractImmutableNativeReference

owningHandle_

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	RocksCallbackObject(long... nativeParameterHandles)

Method Summary

Modifier and Type	Method and Description
protected void	disposeInternal() Deletes underlying C++ native callback object pointer
protected abstract long	initializeNative(long... nativeParameterHandles) Construct the Native C++ object which will callback to our object methods

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

Field Detail

nativeHandle_

protected final long nativeHandle_

Constructor Detail

RocksCallbackObject

protected RocksCallbackObject(long... nativeParameterHandles)

Method Detail

initializeNative

protected abstract long initializeNative(long... nativeParameterHandles)

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

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

disposeInternal

protected void disposeInternal()

Deletes underlying C++ native callback object pointer

Specified by:

disposeInternal in class AbstractImmutableNativeReference