Package org.apache.flink.streaming.util.serialization

Interface KeyedDeserializationSchema<T>

Type Parameters:
T - The type created by the keyed deserialization schema.
All Superinterfaces:
KafkaDeserializationSchema<T>, org.apache.flink.api.java.typeutils.ResultTypeQueryable<T>, Serializable
@Deprecated @PublicEvolving public interface KeyedDeserializationSchema<T> extends KafkaDeserializationSchema<T>
Deprecated.
Use KafkaDeserializationSchema.
The deserialization schema describes how to turn the byte key / value messages delivered by certain data sources (for example Apache Kafka) into data types (Java/Scala objects) that are processed by Flink.

  • Method Summary

    Modifier and Type
    Method
    Description
    T
    deserialize(byte[] messageKey, byte[] message, String topic, int partition, long offset)
    Deprecated.
    Deserializes the byte message.
    default T
    deserialize(org.apache.kafka.clients.consumer.ConsumerRecord<byte[],byte[]> record)
    Deprecated.
    Deserializes the Kafka record.

    Methods inherited from interface org.apache.flink.streaming.connectors.kafka.KafkaDeserializationSchema

    deserialize, isEndOfStream, open

    Methods inherited from interface org.apache.flink.api.java.typeutils.ResultTypeQueryable

    getProducedType

  • Method Details

    • deserialize

      T deserialize(byte[] messageKey, byte[] message, String topic, int partition, long offset) throws IOException
      Deprecated.
      Deserializes the byte message.
      Parameters:
      messageKey - the key as a byte array (null if no key has been set).
      message - The message, as a byte array (null if the message was empty or deleted).
      partition - The partition the message has originated from.
      offset - the offset of the message in the original source (for example the Kafka offset).
      Returns:
      The deserialized message as an object (null if the message cannot be deserialized).
      Throws:
      IOException

    • deserialize

      default T deserialize(org.apache.kafka.clients.consumer.ConsumerRecord<byte[],byte[]> record) throws IOException
      Deprecated.
      Description copied from interface: KafkaDeserializationSchema
      Deserializes the Kafka record.
      Specified by:
      deserialize in interface KafkaDeserializationSchema<T>
      Parameters:
      record - Kafka record to be deserialized.
      Returns:
      The deserialized message as an object (null if the message cannot be deserialized).
      Throws:
      IOException