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

Class RocksStateKeysIterator<K>

java.lang.Object

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

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 AbstractRocksStateKeysIterator<K>
implements Iterator<K>

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

Field Summary

Fields inherited from class org.apache.flink.contrib.streaming.state.iterator.AbstractRocksStateKeysIterator

ambiguousKeyPossible, byteArrayDataInputView, iterator, keyGroupPrefixBytes, keySerializer, state

Constructor Summary

Constructors

Constructor	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	Description
boolean	hasNext()
K	next()

Methods inherited from class org.apache.flink.contrib.streaming.state.iterator.AbstractRocksStateKeysIterator

close, deserializeKey, isMatchingNameSpace

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>