org.apache.flink.cdc.runtime.serializer

类 MapSerializer<K,V>

java.lang.Object

org.apache.flink.api.common.typeutils.TypeSerializer<Map<K,V>>

org.apache.flink.cdc.runtime.serializer.MapSerializer<K,V>

类型参数:

K - The type of the keys in the map.

V - The type of the values in the map.

所有已实现的接口:

Serializable

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

A serializer for Map. The serializer relies on a key serializer and a value serializer for the serialization of the map's key-value pairs.

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 marker.

另请参阅:

序列化表格

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	MapSerializer.MapSerializerSnapshot<K,V> Snapshot class for the MapSerializer.

构造器概要

构造器

构造器和说明
MapSerializer(org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer, org.apache.flink.api.common.typeutils.TypeSerializer<V> valueSerializer) Creates a map serializer that uses the given serializers to serialize the key-value pairs in the map.

方法概要

限定符和类型	方法和说明
void	copy(org.apache.flink.core.memory.DataInputView source, org.apache.flink.core.memory.DataOutputView target)
Map<K,V>	copy(Map<K,V> from)
Map<K,V>	copy(Map<K,V> from, Map<K,V> reuse)
Map<K,V>	createInstance()
Map<K,V>	deserialize(org.apache.flink.core.memory.DataInputView source)
Map<K,V>	deserialize(Map<K,V> reuse, org.apache.flink.core.memory.DataInputView source)
org.apache.flink.api.common.typeutils.TypeSerializer<Map<K,V>>	duplicate()
boolean	equals(Object obj)
org.apache.flink.api.common.typeutils.TypeSerializer<K>	getKeySerializer()
int	getLength()
org.apache.flink.api.common.typeutils.TypeSerializer<V>	getValueSerializer()
int	hashCode()
boolean	isImmutableType()
void	serialize(Map<K,V> map, org.apache.flink.core.memory.DataOutputView target)
org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<Map<K,V>>	snapshotConfiguration()

从类继承的方法 java.lang.Object

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

构造器详细资料

MapSerializer

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

Creates a map serializer that uses the given serializers to serialize the key-value pairs in the map.

参数:

keySerializer - The serializer for the keys in the map

valueSerializer - The serializer for the values in the map

方法详细资料

getKeySerializer

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

getValueSerializer

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

isImmutableType

public boolean isImmutableType()

指定者:

isImmutableType 在类中 org.apache.flink.api.common.typeutils.TypeSerializer<Map<K,V>>

duplicate

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

指定者:

duplicate 在类中 org.apache.flink.api.common.typeutils.TypeSerializer<Map<K,V>>

createInstance

public Map<K,V> createInstance()

指定者:

createInstance 在类中 org.apache.flink.api.common.typeutils.TypeSerializer<Map<K,V>>

copy

public Map<K,V> copy(Map<K,V> from)

指定者:

copy 在类中 org.apache.flink.api.common.typeutils.TypeSerializer<Map<K,V>>

copy

public Map<K,V> copy(Map<K,V> from,
                     Map<K,V> reuse)

指定者:

copy 在类中 org.apache.flink.api.common.typeutils.TypeSerializer<Map<K,V>>

getLength

public int getLength()

指定者:

getLength 在类中 org.apache.flink.api.common.typeutils.TypeSerializer<Map<K,V>>

serialize

public void serialize(Map<K,V> map,
                      org.apache.flink.core.memory.DataOutputView target)
               throws IOException

指定者:

serialize 在类中 org.apache.flink.api.common.typeutils.TypeSerializer<Map<K,V>>

抛出:

IOException

deserialize

public Map<K,V> deserialize(org.apache.flink.core.memory.DataInputView source)
                     throws IOException

指定者:

deserialize 在类中 org.apache.flink.api.common.typeutils.TypeSerializer<Map<K,V>>

抛出:

IOException

deserialize

public Map<K,V> deserialize(Map<K,V> reuse,
                            org.apache.flink.core.memory.DataInputView source)
                     throws IOException

指定者:

deserialize 在类中 org.apache.flink.api.common.typeutils.TypeSerializer<Map<K,V>>

抛出:

IOException

copy

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

指定者:

copy 在类中 org.apache.flink.api.common.typeutils.TypeSerializer<Map<K,V>>

抛出:

IOException

equals

public boolean equals(Object obj)

指定者:

equals 在类中 org.apache.flink.api.common.typeutils.TypeSerializer<Map<K,V>>

hashCode

public int hashCode()

指定者:

hashCode 在类中 org.apache.flink.api.common.typeutils.TypeSerializer<Map<K,V>>

snapshotConfiguration

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

指定者:

snapshotConfiguration 在类中 org.apache.flink.api.common.typeutils.TypeSerializer<Map<K,V>>