org.apache.flink.streaming.util.serialization

Class PulsarPrimitiveSchema<T>

java.lang.Object

org.apache.flink.streaming.util.serialization.PulsarPrimitiveSchema<T>

All Implemented Interfaces:

Serializable, org.apache.flink.api.java.typeutils.ResultTypeQueryable<T>, PulsarContextAware<T>, PulsarDeserializationSchema<T>, PulsarSerializationSchema<T>

public class PulsarPrimitiveSchema<T>
extends Object
implements PulsarSerializationSchema<T>, PulsarDeserializationSchema<T>, PulsarContextAware<T>

pulsar primitive deserialization.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
PulsarPrimitiveSchema(Class<T> recordClazz)

Method Summary

Modifier and Type	Method and Description
T	deserialize(org.apache.pulsar.client.api.Message<T> message) Deserializes the Pulsar message.
org.apache.flink.api.common.typeinfo.TypeInformation<T>	getProducedType()
org.apache.pulsar.client.api.Schema<T>	getSchema()
Optional<String>	getTargetTopic(T element) Returns the topic that the presented element should be sent to.
boolean	isEndOfStream(T nextElement) Method to decide whether the element signals the end of the stream.
static boolean	isPulsarPrimitive(Class<?> key)
void	serialize(T element, org.apache.pulsar.client.api.TypedMessageBuilder<T> messageBuilder) Serializes the incoming element to a specified type.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.streaming.util.serialization.PulsarSerializationSchema

open

Methods inherited from interface org.apache.flink.streaming.util.serialization.PulsarDeserializationSchema

builder, deserialize, open, valueOnly

Methods inherited from interface org.apache.flink.streaming.util.serialization.PulsarContextAware

setNumParallelInstances, setParallelInstanceId

Constructor Detail

PulsarPrimitiveSchema

public PulsarPrimitiveSchema(Class<T> recordClazz)

Method Detail

isPulsarPrimitive

public static boolean isPulsarPrimitive(Class<?> key)

serialize

public void serialize(T element,
                      org.apache.pulsar.client.api.TypedMessageBuilder<T> messageBuilder)

Description copied from interface: PulsarSerializationSchema

Serializes the incoming element to a specified type.

Specified by:

serialize in interface PulsarSerializationSchema<T>

Parameters:

element - The incoming element to be serialized

deserialize

public T deserialize(org.apache.pulsar.client.api.Message<T> message)
              throws IOException

Description copied from interface: PulsarDeserializationSchema

Deserializes the Pulsar message.

Can output multiple records through the Collector. Note that number and size of the produced records should be relatively small. Depending on the source implementation records can be buffered in memory or collecting records might delay emitting checkpoint barrier.

Specified by:

deserialize in interface PulsarDeserializationSchema<T>

Parameters:

message - The message, as a byte array.

Throws:

IOException

getTargetTopic

public Optional<String> getTargetTopic(T element)

Description copied from interface: PulsarContextAware

Returns the topic that the presented element should be sent to.

Specified by:

getTargetTopic in interface PulsarContextAware<T>

getSchema

public org.apache.pulsar.client.api.Schema<T> getSchema()

Specified by:

getSchema in interface PulsarContextAware<T>

getProducedType

public org.apache.flink.api.common.typeinfo.TypeInformation<T> getProducedType()

Specified by:

getProducedType in interface org.apache.flink.api.java.typeutils.ResultTypeQueryable<T>

isEndOfStream

public boolean isEndOfStream(T nextElement)

Description copied from interface: PulsarDeserializationSchema

Method to decide whether the element signals the end of the stream. If true is returned the element won't be emitted.

Specified by:

isEndOfStream in interface PulsarDeserializationSchema<T>

Parameters:

nextElement - The element to test for the end-of-stream signal.

Returns:

True, if the element signals end of stream, false otherwise.