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

Class PulsarTypeInformationWrapper<T>

java.lang.Object

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

All Implemented Interfaces:

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

public class PulsarTypeInformationWrapper<T>
extends Object
implements PulsarDeserializationSchema<T>

Wrap the flink TypeInformation into a PulsarDeserializationSchema. We would create a flink TypeSerializer by using given ExecutionConfig. This execution config could be ExecutionEnvironment.getConfig().

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
PulsarTypeInformationWrapper(org.apache.flink.api.common.typeinfo.TypeInformation<T> information, org.apache.flink.api.common.ExecutionConfig config)

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()

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

PulsarTypeInformationWrapper

public PulsarTypeInformationWrapper(org.apache.flink.api.common.typeinfo.TypeInformation<T> information,
                                    org.apache.flink.api.common.ExecutionConfig config)

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>