Package org.apache.flink.formats.avro

Class RegistryAvroDeserializationSchema<T>

java.lang.Object

org.apache.flink.formats.avro.AvroDeserializationSchema<T>

org.apache.flink.formats.avro.RegistryAvroDeserializationSchema<T>

Type Parameters:

T - type of record it produces

All Implemented Interfaces:

Serializable, DeserializationSchema<T>, ResultTypeQueryable<T>

Direct Known Subclasses:

ConfluentRegistryAvroDeserializationSchema

public class RegistryAvroDeserializationSchema<T>
extends AvroDeserializationSchema<T>

Deserialization schema that deserializes from Avro format using SchemaCoder.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.flink.api.common.serialization.DeserializationSchema

DeserializationSchema.InitializationContext

Constructor Summary

Constructors

Constructor	Description
RegistryAvroDeserializationSchema(Class<T> recordClazz, org.apache.avro.Schema reader, SchemaCoder.SchemaCoderProvider schemaCoderProvider)	Creates Avro deserialization schema that reads schema from input stream using provided SchemaCoder.
RegistryAvroDeserializationSchema(Class<T> recordClazz, org.apache.avro.Schema reader, SchemaCoder.SchemaCoderProvider schemaCoderProvider, AvroFormatOptions.AvroEncoding encoding)	Creates Avro deserialization schema that reads schema from input stream using provided SchemaCoder.

Method Summary

Modifier and Type	Method	Description
T	deserialize(byte[] message)	Deserializes the byte message.
boolean	equals(Object o)
int	hashCode()

Methods inherited from class org.apache.flink.formats.avro.AvroDeserializationSchema

forGeneric, forGeneric, forSpecific, forSpecific, getProducedType, isEndOfStream

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.api.common.serialization.DeserializationSchema

deserialize, open

Constructor Detail

RegistryAvroDeserializationSchema

public RegistryAvroDeserializationSchema(Class<T> recordClazz,
                                         @Nullable
                                         org.apache.avro.Schema reader,
                                         SchemaCoder.SchemaCoderProvider schemaCoderProvider)

Creates Avro deserialization schema that reads schema from input stream using provided SchemaCoder.

Parameters:

recordClazz - class to which deserialize. Should be either SpecificRecord or GenericRecord.

reader - reader's Avro schema. Should be provided if recordClazz is GenericRecord

schemaCoderProvider - schema provider that allows instantiation of SchemaCoder that will be used for schema reading

RegistryAvroDeserializationSchema

public RegistryAvroDeserializationSchema(Class<T> recordClazz,
                                         @Nullable
                                         org.apache.avro.Schema reader,
                                         SchemaCoder.SchemaCoderProvider schemaCoderProvider,
                                         AvroFormatOptions.AvroEncoding encoding)

Creates Avro deserialization schema that reads schema from input stream using provided SchemaCoder.

Parameters:

recordClazz - class to which deserialize. Should be either SpecificRecord or GenericRecord.

reader - reader's Avro schema. Should be provided if recordClazz is GenericRecord

schemaCoderProvider - schema provider that allows instantiation of SchemaCoder that will be used for schema reading

encoding - Avro serialization approach to use. Required to identify the correct decoder class to use.

Method Detail

deserialize

public T deserialize(@Nullable
                     byte[] message)
              throws IOException

Description copied from interface: DeserializationSchema

Deserializes the byte message.

Specified by:

deserialize in interface DeserializationSchema<T>

Overrides:

deserialize in class AvroDeserializationSchema<T>

Parameters:

message - The message, as a byte array.

Returns:

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

Throws:

IOException

equals

public boolean equals(Object o)

Overrides:

equals in class AvroDeserializationSchema<T>

hashCode

public int hashCode()

Overrides:

hashCode in class AvroDeserializationSchema<T>