org.apache.flink.formats.avro

Class AvroDeserializationSchema<T>

java.lang.Object

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

Type Parameters:

T - type of record it produces

All Implemented Interfaces:

Serializable, org.apache.flink.api.common.serialization.DeserializationSchema<T>, org.apache.flink.api.java.typeutils.ResultTypeQueryable<T>

Direct Known Subclasses:

RegistryAvroDeserializationSchema

public class AvroDeserializationSchema<T>
extends Object
implements org.apache.flink.api.common.serialization.DeserializationSchema<T>

Deserialization schema that deserializes from Avro binary format.

See Also:

Serialized Form

Nested Class Summary

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

org.apache.flink.api.common.serialization.DeserializationSchema.InitializationContext

Method Summary

Modifier and Type	Method and Description
T	deserialize(byte[] message)
boolean	equals(Object o)
static AvroDeserializationSchema<org.apache.avro.generic.GenericRecord>	forGeneric(org.apache.avro.Schema schema) Creates AvroDeserializationSchema that produces GenericRecord using provided schema.
static AvroDeserializationSchema<org.apache.avro.generic.GenericRecord>	forGeneric(org.apache.avro.Schema schema, AvroFormatOptions.AvroEncoding encoding) Creates AvroDeserializationSchema that produces GenericRecord using provided schema.
static <T extends org.apache.avro.specific.SpecificRecord> AvroDeserializationSchema<T>	forSpecific(Class<T> tClass) Creates AvroDeserializationSchema that produces classes that were generated from avro schema.
static <T extends org.apache.avro.specific.SpecificRecord> AvroDeserializationSchema<T>	forSpecific(Class<T> tClass, AvroFormatOptions.AvroEncoding encoding) Creates AvroDeserializationSchema that produces classes that were generated from avro schema.
org.apache.flink.api.common.typeinfo.TypeInformation<T>	getProducedType()
int	hashCode()
boolean	isEndOfStream(T nextElement)

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

Method Detail

forGeneric

public static AvroDeserializationSchema<org.apache.avro.generic.GenericRecord> forGeneric(org.apache.avro.Schema schema)

Creates AvroDeserializationSchema that produces GenericRecord using provided schema.

Parameters:

schema - schema of produced records

Returns:

deserialized record in form of GenericRecord

forGeneric

public static AvroDeserializationSchema<org.apache.avro.generic.GenericRecord> forGeneric(org.apache.avro.Schema schema,
                                                                                          AvroFormatOptions.AvroEncoding encoding)

Creates AvroDeserializationSchema that produces GenericRecord using provided schema.

Parameters:

schema - schema of produced records

encoding - Avro serialization approach to use for decoding

Returns:

deserialized record in form of GenericRecord

forSpecific

public static <T extends org.apache.avro.specific.SpecificRecord> AvroDeserializationSchema<T> forSpecific(Class<T> tClass)

Creates AvroDeserializationSchema that produces classes that were generated from avro schema.

Parameters:

tClass - class of record to be produced

Returns:

deserialized record

forSpecific

public static <T extends org.apache.avro.specific.SpecificRecord> AvroDeserializationSchema<T> forSpecific(Class<T> tClass,
                                                                                                           AvroFormatOptions.AvroEncoding encoding)

Creates AvroDeserializationSchema that produces classes that were generated from avro schema.

Parameters:

tClass - class of record to be produced

encoding - Avro serialization approach to use for decoding

Returns:

deserialized record

deserialize

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

Specified by:

deserialize in interface org.apache.flink.api.common.serialization.DeserializationSchema<T>

Throws:

IOException

isEndOfStream

public boolean isEndOfStream(T nextElement)

Specified by:

isEndOfStream in interface org.apache.flink.api.common.serialization.DeserializationSchema<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>

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object