org.apache.flink.streaming.util.serialization

接口 KeyedSerializationSchema<T>

类型参数:

T - The type to be serialized.

所有超级接口:

Serializable

所有已知实现类:

KeyedSerializationSchemaWrapper, TypeInformationKeyValueSerializationSchema

已过时。

Use KafkaSerializationSchema.

@Deprecated
 @PublicEvolving
public interface KeyedSerializationSchema<T>
extends Serializable

The serialization schema describes how to turn a data object into a different serialized representation. Most data sinks (for example Apache Kafka) require the data to be handed to them in a specific format (for example as byte strings).

方法概要

限定符和类型	方法和说明
String	getTargetTopic(T element) 已过时。 Optional method to determine the target topic for the element.
byte[]	serializeKey(T element) 已过时。 Serializes the key of the incoming element to a byte array This method might return null if no key is available.
byte[]	serializeValue(T element) 已过时。 Serializes the value of the incoming element to a byte array.

方法详细资料

serializeKey

byte[] serializeKey(T element)

已过时。

Serializes the key of the incoming element to a byte array This method might return null if no key is available.

参数:

element - The incoming element to be serialized

返回:

the key of the element as a byte array

serializeValue

byte[] serializeValue(T element)

已过时。

Serializes the value of the incoming element to a byte array.

参数:

element - The incoming element to be serialized

返回:

the value of the element as a byte array

getTargetTopic

String getTargetTopic(T element)

已过时。

Optional method to determine the target topic for the element.

参数:

element - Incoming element to determine the target topic from

返回:

null or the target topic