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

Class RocksStateKeysAndNamespaceIterator<K,N>

java.lang.Object

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

org.apache.flink.contrib.streaming.state.iterator.RocksStateKeysAndNamespaceIterator<K,N>

Type Parameters:

K - the type of the iterated keys in RocksDB.

N - the type of the iterated namespaces in RocksDB.

All Implemented Interfaces:

AutoCloseable, Iterator<org.apache.flink.api.java.tuple.Tuple2<K,N>>

public class RocksStateKeysAndNamespaceIterator<K,N>
extends AbstractRocksStateKeysIterator<K>
implements Iterator<org.apache.flink.api.java.tuple.Tuple2<K,N>>

Adapter class to bridge between RocksIteratorWrapper and Iterator to iterate over the keys and namespaces. 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
RocksStateKeysAndNamespaceIterator(RocksIteratorWrapper iterator, String state, org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer, org.apache.flink.api.common.typeutils.TypeSerializer<N> namespaceSerializer, int keyGroupPrefixBytes, boolean ambiguousKeyPossible)

Method Summary

Modifier and Type	Method	Description
boolean	hasNext()
org.apache.flink.api.java.tuple.Tuple2<K,N>	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

RocksStateKeysAndNamespaceIterator

public RocksStateKeysAndNamespaceIterator(@Nonnull
                                          RocksIteratorWrapper iterator,
                                          @Nonnull
                                          String state,
                                          @Nonnull
                                          org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer,
                                          @Nonnull
                                          org.apache.flink.api.common.typeutils.TypeSerializer<N> namespaceSerializer,
                                          int keyGroupPrefixBytes,
                                          boolean ambiguousKeyPossible)

Method Detail

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<K>

next

public org.apache.flink.api.java.tuple.Tuple2<K,N> next()

Specified by:

next in interface Iterator<K>