org.apache.flink.contrib.streaming.state.iterator

Class RocksStateKeysIterator<K>

java.lang.Object

org.apache.flink.contrib.streaming.state.iterator.RocksStateKeysIterator<K>

Type Parameters:

K - the type of the iterated objects, which are keys in RocksDB.

All Implemented Interfaces:

AutoCloseable, Iterator<K>

public class RocksStateKeysIterator<K>
extends Object
implements Iterator<K>, AutoCloseable

Adapter class to bridge between RocksIteratorWrapper and Iterator to iterate over the keys. This class is not thread safe.

Constructor Summary

Constructors

Constructor and Description
RocksStateKeysIterator(RocksIteratorWrapper iterator, String state, org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer, int keyGroupPrefixBytes, boolean ambiguousKeyPossible, byte[] namespaceBytes)

Method Summary

Modifier and Type	Method and Description
void	close()
boolean	hasNext()
K	next()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining, remove

Constructor Detail

RocksStateKeysIterator

public RocksStateKeysIterator(@Nonnull
                              RocksIteratorWrapper iterator,
                              @Nonnull
                              String state,
                              @Nonnull
                              org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer,
                              int keyGroupPrefixBytes,
                              boolean ambiguousKeyPossible,
                              @Nonnull
                              byte[] namespaceBytes)

Method Detail

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<K>

next

public K next()

Specified by:

next in interface Iterator<K>

close

public void close()

Specified by:

close in interface AutoCloseable