RocksCallbackObject

java.lang.Object
- org.rocksdb.AbstractNativeReference
- - org.rocksdb.AbstractImmutableNativeReference
  - - org.rocksdb.RocksCallbackObject

All Implemented Interfaces:

java.lang.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 Description

protected long nativeHandle_
- Fields inherited from class org.rocksdb.AbstractImmutableNativeReference
  owningHandle_

Constructor Summary

Constructors
Modifier Constructor Description

protected RocksCallbackObject(long... nativeParameterHandles)

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	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