org.apache.flink.contrib.streaming.state

Class RocksDBKeySerializationUtils

java.lang.Object

org.apache.flink.contrib.streaming.state.RocksDBKeySerializationUtils

public class RocksDBKeySerializationUtils
extends Object

Utils for RocksDB state serialization and deserialization.

Constructor Summary

Constructors

Constructor and Description
RocksDBKeySerializationUtils()

Method Summary

Modifier and Type	Method and Description
static boolean	isAmbiguousKeyPossible(org.apache.flink.api.common.typeutils.TypeSerializer keySerializer, org.apache.flink.api.common.typeutils.TypeSerializer namespaceSerializer)
static <K> K	readKey(org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer, org.apache.flink.core.memory.ByteArrayInputStreamWithPos inputStream, org.apache.flink.core.memory.DataInputView inputView, boolean ambiguousKeyPossible)
static int	readKeyGroup(int keyGroupPrefixBytes, org.apache.flink.core.memory.DataInputView inputView)
static <N> N	readNamespace(org.apache.flink.api.common.typeutils.TypeSerializer<N> namespaceSerializer, org.apache.flink.core.memory.ByteArrayInputStreamWithPos inputStream, org.apache.flink.core.memory.DataInputView inputView, boolean ambiguousKeyPossible)
static <K> void	writeKey(K key, org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer, org.apache.flink.core.memory.ByteArrayOutputStreamWithPos keySerializationStream, org.apache.flink.core.memory.DataOutputView keySerializationDataOutputView, boolean ambiguousKeyPossible)
static void	writeKeyGroup(int keyGroup, int keyGroupPrefixBytes, org.apache.flink.core.memory.DataOutputView keySerializationDateDataOutputView)
static <N> void	writeNameSpace(N namespace, org.apache.flink.api.common.typeutils.TypeSerializer<N> namespaceSerializer, org.apache.flink.core.memory.ByteArrayOutputStreamWithPos keySerializationStream, org.apache.flink.core.memory.DataOutputView keySerializationDataOutputView, boolean ambiguousKeyPossible)

Methods inherited from class java.lang.Object

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

Constructor Detail

RocksDBKeySerializationUtils

public RocksDBKeySerializationUtils()

Method Detail

readKeyGroup

public static int readKeyGroup(int keyGroupPrefixBytes,
                               org.apache.flink.core.memory.DataInputView inputView)
                        throws IOException

Throws:

IOException

readKey

public static <K> K readKey(org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer,
                            org.apache.flink.core.memory.ByteArrayInputStreamWithPos inputStream,
                            org.apache.flink.core.memory.DataInputView inputView,
                            boolean ambiguousKeyPossible)
                     throws IOException

Throws:

IOException

readNamespace

public static <N> N readNamespace(org.apache.flink.api.common.typeutils.TypeSerializer<N> namespaceSerializer,
                                  org.apache.flink.core.memory.ByteArrayInputStreamWithPos inputStream,
                                  org.apache.flink.core.memory.DataInputView inputView,
                                  boolean ambiguousKeyPossible)
                           throws IOException

Throws:

IOException

writeNameSpace

public static <N> void writeNameSpace(N namespace,
                                      org.apache.flink.api.common.typeutils.TypeSerializer<N> namespaceSerializer,
                                      org.apache.flink.core.memory.ByteArrayOutputStreamWithPos keySerializationStream,
                                      org.apache.flink.core.memory.DataOutputView keySerializationDataOutputView,
                                      boolean ambiguousKeyPossible)
                               throws IOException

Throws:

IOException

isAmbiguousKeyPossible

public static boolean isAmbiguousKeyPossible(org.apache.flink.api.common.typeutils.TypeSerializer keySerializer,
                                             org.apache.flink.api.common.typeutils.TypeSerializer namespaceSerializer)

writeKeyGroup

public static void writeKeyGroup(int keyGroup,
                                 int keyGroupPrefixBytes,
                                 org.apache.flink.core.memory.DataOutputView keySerializationDateDataOutputView)
                          throws IOException

Throws:

IOException

writeKey

public static <K> void writeKey(K key,
                                org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer,
                                org.apache.flink.core.memory.ByteArrayOutputStreamWithPos keySerializationStream,
                                org.apache.flink.core.memory.DataOutputView keySerializationDataOutputView,
                                boolean ambiguousKeyPossible)
                         throws IOException

Throws:

IOException