org.apache.flink.streaming.connectors.pulsar.internal

Class PulsarDeserializer

java.lang.Object

org.apache.flink.streaming.connectors.pulsar.internal.PulsarDeserializer

All Implemented Interfaces:

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

public class PulsarDeserializer
extends Object
implements PulsarDeserializationSchema<org.apache.flink.types.Row>

Deserialize Pulsar message into Flink row.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	PulsarDeserializer.ArrayDataUpdater Flink array field updater.
static interface	PulsarDeserializer.BinFunction<A,B> Binary function interface that takes three arguments and returns nothing.
static interface	PulsarDeserializer.Function<T,R> Represents a function that accepts one argument and produces a result.
static class	PulsarDeserializer.NewDecimalConversion DecimalConversion.
static class	PulsarDeserializer.RowUpdater Flink Row field updater.
static interface	PulsarDeserializer.TriFunction<A,B,C> Trinary function interface that takes three arguments and returns nothing.

Constructor Summary

Constructors

Constructor and Description
PulsarDeserializer(org.apache.pulsar.common.schema.SchemaInfo schemaInfo, JSONOptions parsedOptions, boolean useExtendField)

Method Summary

Modifier and Type	Method and Description
org.apache.flink.types.Row	deserialize(org.apache.pulsar.client.api.Message message) Deserializes the Pulsar message.
org.apache.flink.api.common.typeinfo.TypeInformation<org.apache.flink.types.Row>	getProducedType()
boolean	isEndOfStream(org.apache.flink.types.Row nextElement) Method to decide whether the element signals the end of the stream.
void	open(org.apache.flink.api.common.serialization.DeserializationSchema.InitializationContext context)

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.connectors.pulsar.internal.PulsarDeserializationSchema

deserialize

Constructor Detail

PulsarDeserializer

public PulsarDeserializer(org.apache.pulsar.common.schema.SchemaInfo schemaInfo,
                          JSONOptions parsedOptions,
                          boolean useExtendField)

Method Detail

open

public void open(org.apache.flink.api.common.serialization.DeserializationSchema.InitializationContext context)
          throws Exception

Specified by:

open in interface PulsarDeserializationSchema<org.apache.flink.types.Row>

Throws:

Exception

isEndOfStream

public boolean isEndOfStream(org.apache.flink.types.Row 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<org.apache.flink.types.Row>

Parameters:

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

Returns:

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

deserialize

public org.apache.flink.types.Row deserialize(org.apache.pulsar.client.api.Message message)
                                       throws IOException

Description copied from interface: PulsarDeserializationSchema

Deserializes the Pulsar message.

Specified by:

deserialize in interface PulsarDeserializationSchema<org.apache.flink.types.Row>

Parameters:

message - Pulsar message to be deserialized.

Returns:

The deserialized message as an object (null if the message cannot be deserialized).

Throws:

IOException

getProducedType

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

Specified by:

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