Package org.apache.flink.state.rocksdb.iterator

Class AbstractRocksStateKeysIterator<K>

java.lang.Object

org.apache.flink.state.rocksdb.iterator.AbstractRocksStateKeysIterator<K>

Type Parameters:

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

All Implemented Interfaces:

AutoCloseable

Direct Known Subclasses:

RocksStateKeysAndNamespaceIterator, RocksStateKeysIterator

@Internal
public abstract class AbstractRocksStateKeysIterator<K>
extends Object
implements AutoCloseable

Base class for iterators over RocksDB column families.

Field Summary

Fields

Modifier and Type	Field	Description
protected final boolean	ambiguousKeyPossible
protected final org.apache.flink.core.memory.DataInputDeserializer	byteArrayDataInputView
protected final RocksIteratorWrapper	iterator
protected final int	keyGroupPrefixBytes
protected final org.apache.flink.api.common.typeutils.TypeSerializer<K>	keySerializer
protected final String	state

Constructor Summary

Constructors

Constructor	Description
AbstractRocksStateKeysIterator(RocksIteratorWrapper iterator, String state, org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer, int keyGroupPrefixBytes, boolean ambiguousKeyPossible)

Method Summary

Modifier and Type	Method	Description
void	close()
protected K	deserializeKey(byte[] keyBytes, org.apache.flink.core.memory.DataInputDeserializer readView)

Methods inherited from class java.lang.Object

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

Field Details

iterator

@Nonnull
protected final RocksIteratorWrapper iterator

state

@Nonnull
protected final String state

keySerializer

@Nonnull
protected final org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer

ambiguousKeyPossible

protected final boolean ambiguousKeyPossible

keyGroupPrefixBytes

protected final int keyGroupPrefixBytes

byteArrayDataInputView

protected final org.apache.flink.core.memory.DataInputDeserializer byteArrayDataInputView

Constructor Details

AbstractRocksStateKeysIterator

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

Method Details

deserializeKey

protected K deserializeKey(byte[] keyBytes,
 org.apache.flink.core.memory.DataInputDeserializer readView)
                    throws IOException

Throws:

IOException

close

public void close()

Specified by:

close in interface AutoCloseable