org.apache.flink.table.runtime.typeutils

Class SortedMapSerializer<K,V>

java.lang.Object

org.apache.flink.api.common.typeutils.TypeSerializer<M>

org.apache.flink.table.runtime.typeutils.SortedMapSerializer<K,V>

Type Parameters:

K - The type of the keys in the map.

V - The type of the values in the map.

All Implemented Interfaces:

Serializable

public final class SortedMapSerializer<K,V>
extends org.apache.flink.api.common.typeutils.TypeSerializer<M>

A serializer for SortedMap. The serializer relies on a key serializer and a value serializer for the serialization of the map's key-value pairs. It also deploys a comparator to ensure the order of the keys.

The serialization format for the map is as follows: four bytes for the length of the map, followed by the serialized representation of each key-value pair. To allow null values, each value is prefixed by a null flag.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
SortedMapSerializer(Comparator<K> comparator, org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer, org.apache.flink.api.common.typeutils.TypeSerializer<V> valueSerializer) Constructor with given comparator, and the serializers for the keys and values in the map.

Method Summary

Modifier and Type	Method and Description
void	copy(org.apache.flink.core.memory.DataInputView source, org.apache.flink.core.memory.DataOutputView target)
M	copy(M from)
M	copy(M from, M reuse)
SortedMap<K,V>	createInstance()
M	deserialize(org.apache.flink.core.memory.DataInputView source)
M	deserialize(M reuse, org.apache.flink.core.memory.DataInputView source)
org.apache.flink.api.common.typeutils.TypeSerializer<SortedMap<K,V>>	duplicate()
boolean	equals(Object o)
Comparator<K>	getComparator() Returns the comparator for the keys in the map.
org.apache.flink.api.common.typeutils.TypeSerializer<K>	getKeySerializer() Returns the serializer for the keys in the map.
int	getLength()
org.apache.flink.api.common.typeutils.TypeSerializer<V>	getValueSerializer() Returns the serializer for the values in the map.
int	hashCode()
boolean	isImmutableType()
void	serialize(M map, org.apache.flink.core.memory.DataOutputView target)
org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<SortedMap<K,V>>	snapshotConfiguration()
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

SortedMapSerializer

public SortedMapSerializer(Comparator<K> comparator,
                           org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer,
                           org.apache.flink.api.common.typeutils.TypeSerializer<V> valueSerializer)

Constructor with given comparator, and the serializers for the keys and values in the map.

Parameters:

comparator - The comparator for the keys in the map.

keySerializer - The serializer for the keys in the map.

valueSerializer - The serializer for the values in the map.

Method Detail

getComparator

public Comparator<K> getComparator()

Returns the comparator for the keys in the map.

Returns:

The comparator for the keys in the map.

duplicate

public org.apache.flink.api.common.typeutils.TypeSerializer<SortedMap<K,V>> duplicate()

Specified by:

duplicate in class org.apache.flink.api.common.typeutils.TypeSerializer<SortedMap<K,V>>

createInstance

public SortedMap<K,V> createInstance()

Specified by:

createInstance in class org.apache.flink.api.common.typeutils.TypeSerializer<SortedMap<K,V>>

equals

public boolean equals(Object o)

hashCode

public int hashCode()

toString

public String toString()

Overrides:

toString in class Object

snapshotConfiguration

public org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<SortedMap<K,V>> snapshotConfiguration()

Specified by:

snapshotConfiguration in class org.apache.flink.api.common.typeutils.TypeSerializer<SortedMap<K,V>>

getKeySerializer

public org.apache.flink.api.common.typeutils.TypeSerializer<K> getKeySerializer()

Returns the serializer for the keys in the map.

Returns:

The serializer for the keys in the map.

getValueSerializer

public org.apache.flink.api.common.typeutils.TypeSerializer<V> getValueSerializer()

Returns the serializer for the values in the map.

Returns:

The serializer for the values in the map.

isImmutableType

public boolean isImmutableType()

Specified by:

isImmutableType in class org.apache.flink.api.common.typeutils.TypeSerializer<M extends Map<K,V>>

copy

public M copy(M from)

Specified by:

copy in class org.apache.flink.api.common.typeutils.TypeSerializer<M extends Map<K,V>>

copy

public M copy(M from,
              M reuse)

Specified by:

copy in class org.apache.flink.api.common.typeutils.TypeSerializer<M extends Map<K,V>>

getLength

public int getLength()

Specified by:

getLength in class org.apache.flink.api.common.typeutils.TypeSerializer<M extends Map<K,V>>

serialize

public void serialize(M map,
                      org.apache.flink.core.memory.DataOutputView target)
               throws IOException

Specified by:

serialize in class org.apache.flink.api.common.typeutils.TypeSerializer<M extends Map<K,V>>

Throws:

IOException

deserialize

public M deserialize(org.apache.flink.core.memory.DataInputView source)
              throws IOException

Specified by:

deserialize in class org.apache.flink.api.common.typeutils.TypeSerializer<M extends Map<K,V>>

Throws:

IOException

deserialize

public M deserialize(M reuse,
                     org.apache.flink.core.memory.DataInputView source)
              throws IOException

Specified by:

deserialize in class org.apache.flink.api.common.typeutils.TypeSerializer<M extends Map<K,V>>

Throws:

IOException

copy

public void copy(org.apache.flink.core.memory.DataInputView source,
                 org.apache.flink.core.memory.DataOutputView target)
          throws IOException

Specified by:

copy in class org.apache.flink.api.common.typeutils.TypeSerializer<M extends Map<K,V>>

Throws:

IOException