Class MapSerializer<K,V>

java.lang.Object

pt.unl.fct.di.novasys.babel2.channels.serializers.collections.MapSerializer<K,V>

Type Parameters:

K - the type of keys in the map

V - the type of values in the map

All Implemented Interfaces:

BabelNetworkSerializer<Map<K,V>>

public class MapSerializer<K,V>
extends Object
implements BabelNetworkSerializer<Map<K,V>>

Network serializer for Java Map collections.

Maps are serialized by writing an integer size followed by alternating serialized keys and values. Upon deserialization, an ImmutableMap is constructed.

Constructor Summary

Constructors

Constructor	Description
MapSerializer(BabelNetworkSerializer<K> keySerializer, BabelNetworkSerializer<V> valueSerializer)	Constructs a new map serializer using the given key and value serializers.

Method Summary

Modifier and Type	Method	Description
Map<K,V>	deserialize(io.netty.buffer.ByteBuf in, NodeStore store)	Reads an instance of T from the supplied buffer.
int	getEstimateSize(Map<K,V> object)	Returns an estimated size in bytes for the given object.
Class<Map<K,V>>	getObjectClass()	Returns the class of objects handled by this serializer, used for registry lookup.
void	serialize(Map<K,V> object, io.netty.buffer.ByteBuf out, NodeStore store)	Encodes object and appends the resulting bytes to out.

Methods inherited from class Object

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

Methods inherited from interface BabelNetworkSerializer

getEstimateSize

Modifier and Type	Method	Description
default int	getEstimateSize(Map<K,V> object, @Nullable NodeStore store)	Returns a size estimate to fit the entire object in a ByteBuf without needing resizes.

Constructor Details

MapSerializer

public MapSerializer(BabelNetworkSerializer<K> keySerializer,
 BabelNetworkSerializer<V> valueSerializer)

Constructs a new map serializer using the given key and value serializers.

Parameters:

keySerializer - the serializer for map keys

valueSerializer - the serializer for map values

Method Details

deserialize

public Map<K,V> deserialize(io.netty.buffer.ByteBuf in,
 NodeStore store)

Description copied from interface: BabelNetworkSerializer

Reads an instance of T from the supplied buffer. The buffer's reader index must be positioned at the first byte of the encoded object. Upon return the reader index is advanced past all bytes consumed.

Specified by:

deserialize in interface BabelNetworkSerializer<K>

Parameters:

in - the source buffer

store - the node store context for resolving node components

Returns:

the deserialized object

serialize

public void serialize(Map<K,V> object,
 io.netty.buffer.ByteBuf out,
 NodeStore store)

Description copied from interface: BabelNetworkSerializer

Encodes object and appends the resulting bytes to out.

Specified by:

serialize in interface BabelNetworkSerializer<K>

Parameters:

object - the object to serialize

out - the destination buffer

store - the node store context for resolving node components

getObjectClass

public Class<Map<K,V>> getObjectClass()

Description copied from interface: BabelNetworkSerializer

Returns the class of objects handled by this serializer, used for registry lookup.

Specified by:

getObjectClass in interface BabelNetworkSerializer<K>

Returns:

the handled class

getEstimateSize

public int getEstimateSize(Map<K,V> object)

Description copied from interface: BabelNetworkSerializer

Returns an estimated size in bytes for the given object.

Specified by:

getEstimateSize in interface BabelNetworkSerializer<K>

Parameters:

object - the object to estimate

Returns:

estimated byte size, or 0 if unknown