Package org.apache.flink.runtime.state

Class CompositeKeySerializationUtils

java.lang.Object

org.apache.flink.runtime.state.CompositeKeySerializationUtils

public class CompositeKeySerializationUtils
extends Object

Utils for RocksDB state serialization and deserialization.

Constructor Summary

Constructors

Constructor	Description
CompositeKeySerializationUtils()

Method Summary

Modifier and Type	Method	Description
static int	computeRequiredBytesInKeyGroupPrefix(int totalKeyGroupsInJob)
static int	extractKeyGroup(int keyGroupPrefixBytes, byte[] rocksDBKey)
static boolean	isAmbiguousKeyPossible(TypeSerializer keySerializer, TypeSerializer namespaceSerializer)
static boolean	isSerializerTypeVariableSized(TypeSerializer<?> serializer)
static <K> K	readKey(TypeSerializer<K> keySerializer, DataInputDeserializer inputView, boolean ambiguousKeyPossible)
static int	readKeyGroup(int keyGroupPrefixBytes, DataInputView inputView)
static <N> N	readNamespace(TypeSerializer<N> namespaceSerializer, DataInputDeserializer inputView, boolean ambiguousKeyPossible)
static void	readVariableIntBytes(DataInputView inputView, int value)
static void	serializeKeyGroup(int keyGroup, byte[] startKeyGroupPrefixBytes)
static <K> void	writeKey(K key, TypeSerializer<K> keySerializer, DataOutputSerializer keySerializationDataOutputView, boolean ambiguousKeyPossible)
static void	writeKeyGroup(int keyGroup, int keyGroupPrefixBytes, DataOutputView keySerializationDateDataOutputView)
static <N> void	writeNameSpace(N namespace, TypeSerializer<N> namespaceSerializer, DataOutputSerializer keySerializationDataOutputView, boolean ambiguousKeyPossible)
static void	writeVariableIntBytes(int value, DataOutputView keySerializationDateDataOutputView)

Methods inherited from class java.lang.Object

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

Constructor Detail

CompositeKeySerializationUtils

public CompositeKeySerializationUtils()

Method Detail

readKeyGroup

public static int readKeyGroup(int keyGroupPrefixBytes,
                               DataInputView inputView)
                        throws IOException

Throws:

IOException

extractKeyGroup

public static int extractKeyGroup(int keyGroupPrefixBytes,
                                  byte[] rocksDBKey)

readKey

public static <K> K readKey(TypeSerializer<K> keySerializer,
                            DataInputDeserializer inputView,
                            boolean ambiguousKeyPossible)
                     throws IOException

Throws:

IOException

readNamespace

public static <N> N readNamespace(TypeSerializer<N> namespaceSerializer,
                                  DataInputDeserializer inputView,
                                  boolean ambiguousKeyPossible)
                           throws IOException

Throws:

IOException

writeNameSpace

public static <N> void writeNameSpace(N namespace,
                                      TypeSerializer<N> namespaceSerializer,
                                      DataOutputSerializer keySerializationDataOutputView,
                                      boolean ambiguousKeyPossible)
                               throws IOException

Throws:

IOException

isSerializerTypeVariableSized

public static boolean isSerializerTypeVariableSized(@Nonnull
                                                    TypeSerializer<?> serializer)

isAmbiguousKeyPossible

public static boolean isAmbiguousKeyPossible(TypeSerializer keySerializer,
                                             TypeSerializer namespaceSerializer)

writeKeyGroup

public static void writeKeyGroup(int keyGroup,
                                 int keyGroupPrefixBytes,
                                 DataOutputView keySerializationDateDataOutputView)
                          throws IOException

Throws:

IOException

writeKey

public static <K> void writeKey(K key,
                                TypeSerializer<K> keySerializer,
                                DataOutputSerializer keySerializationDataOutputView,
                                boolean ambiguousKeyPossible)
                         throws IOException

Throws:

IOException

readVariableIntBytes

public static void readVariableIntBytes(DataInputView inputView,
                                        int value)
                                 throws IOException

Throws:

IOException

writeVariableIntBytes

public static void writeVariableIntBytes(int value,
                                         DataOutputView keySerializationDateDataOutputView)
                                  throws IOException

Throws:

IOException

serializeKeyGroup

public static void serializeKeyGroup(int keyGroup,
                                     byte[] startKeyGroupPrefixBytes)

computeRequiredBytesInKeyGroupPrefix

public static int computeRequiredBytesInKeyGroupPrefix(int totalKeyGroupsInJob)