org.apache.flink.connector.pulsar.source.reader.deserializer

Class PulsarSchemaWrapper<T>

java.lang.Object

org.apache.flink.connector.pulsar.source.reader.deserializer.PulsarSchemaWrapper<T>

Type Parameters:

T - The output type of the message.

All Implemented Interfaces:

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

@Internal
public class PulsarSchemaWrapper<T>
extends Object
implements PulsarDeserializationSchema<T>

The deserialization schema wrapper for pulsar original Schema. Pulsar would deserialize the message and pass it to flink with a auto generate or given TypeInformation.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
PulsarSchemaWrapper(PulsarSchema<T> pulsarSchema)

Method Summary

Modifier and Type	Method and Description
void	deserialize(org.apache.pulsar.client.api.Message<byte[]> message, org.apache.flink.util.Collector<T> out) Deserializes the pulsar message.
org.apache.flink.api.common.typeinfo.TypeInformation<T>	getProducedType()
PulsarSchema<?>	pulsarSchema()

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.connector.pulsar.source.reader.deserializer.PulsarDeserializationSchema

flinkSchema, flinkTypeInfo, open, open, pulsarSchema, pulsarSchema, pulsarSchema

Constructor Detail

PulsarSchemaWrapper

public PulsarSchemaWrapper(PulsarSchema<T> pulsarSchema)

Method Detail

deserialize

public void deserialize(org.apache.pulsar.client.api.Message<byte[]> message,
                        org.apache.flink.util.Collector<T> out)
                 throws Exception

Description copied from interface: PulsarDeserializationSchema

Deserializes the pulsar message. This message could be a raw byte message or some parsed message which decoded by pulsar schema.

You can output multiple message by using 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 decoded by pulsar.

out - The collector to put the resulting messages.

Throws:

Exception

getProducedType

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

Specified by:

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

pulsarSchema

public PulsarSchema<?> pulsarSchema()