Package org.apache.flink.formats.avro

Class AvroRowDeserializationSchema

java.lang.Object

org.apache.flink.api.common.serialization.AbstractDeserializationSchema<org.apache.flink.types.Row>

org.apache.flink.formats.avro.AvroRowDeserializationSchema

All Implemented Interfaces:

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

@Internal
public class AvroRowDeserializationSchema
extends org.apache.flink.api.common.serialization.AbstractDeserializationSchema<org.apache.flink.types.Row>

Deserialization schema from Avro bytes to Row.

Deserializes the byte[] messages into (nested) Flink rows. It converts Avro types into types that are compatible with Flink's Table & SQL API.

Projects with Avro records containing logical date/time types need to add a JodaTime dependency.

Note: Changes in this class need to be kept in sync with the corresponding runtime class AvroRowSerializationSchema and schema converter AvroSchemaConverter.

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

Constructor Summary

Constructors

Constructor	Description
AvroRowDeserializationSchema(Class<? extends org.apache.avro.specific.SpecificRecord> recordClazz)	Creates a Avro deserialization schema for the given specific record class.
AvroRowDeserializationSchema(String avroSchemaString)	Creates a Avro deserialization schema for the given Avro schema string.

Method Summary

Modifier and Type	Method	Description
org.apache.flink.types.Row	deserialize(byte[] message)
boolean	equals(Object o)
org.apache.flink.api.common.typeinfo.TypeInformation<org.apache.flink.types.Row>	getProducedType()
int	hashCode()

Methods inherited from class org.apache.flink.api.common.serialization.AbstractDeserializationSchema

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

AvroRowDeserializationSchema

public AvroRowDeserializationSchema(Class<? extends org.apache.avro.specific.SpecificRecord> recordClazz)

Creates a Avro deserialization schema for the given specific record class. Having the concrete Avro record class might improve performance.

Parameters:

recordClazz - Avro record class used to deserialize Avro's record to Flink's row

AvroRowDeserializationSchema

public AvroRowDeserializationSchema(String avroSchemaString)

Creates a Avro deserialization schema for the given Avro schema string.

Parameters:

avroSchemaString - Avro schema string to deserialize Avro's record to Flink's row

Method Detail

deserialize

public org.apache.flink.types.Row deserialize(byte[] message)
                                       throws IOException

Specified by:

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

Specified by:

deserialize in class org.apache.flink.api.common.serialization.AbstractDeserializationSchema<org.apache.flink.types.Row>

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>

Overrides:

getProducedType in class org.apache.flink.api.common.serialization.AbstractDeserializationSchema<org.apache.flink.types.Row>

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object