org.apache.flink.formats.avro.typeutils

Class BackwardsCompatibleAvroSerializer<T>

java.lang.Object

org.apache.flink.api.common.typeutils.TypeSerializer<T>

org.apache.flink.formats.avro.typeutils.BackwardsCompatibleAvroSerializer<T>

Type Parameters:

T - The type to be serialized.

All Implemented Interfaces:

Serializable

public class BackwardsCompatibleAvroSerializer<T>
extends org.apache.flink.api.common.typeutils.TypeSerializer<T>

An Avro serializer that can switch back to a KryoSerializer or a Pojo Serializer, if it has to ensure compatibility with one of those.

This serializer is there only as a means to explicitly fall back to PoJo serialization in the case where an upgrade from an earlier savepoint was made.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
BackwardsCompatibleAvroSerializer(Class<T> type) Creates a new backwards-compatible Avro Serializer, for the given type.

Method Summary

Modifier and Type	Method and Description
boolean	canEqual(Object obj)
void	copy(org.apache.flink.core.memory.DataInputView source, org.apache.flink.core.memory.DataOutputView target)
T	copy(T from)
T	copy(T from, T reuse)
T	createInstance()
T	deserialize(org.apache.flink.core.memory.DataInputView source)
T	deserialize(T reuse, org.apache.flink.core.memory.DataInputView source)
org.apache.flink.api.common.typeutils.TypeSerializer<T>	duplicate()
org.apache.flink.api.common.typeutils.CompatibilityResult<T>	ensureCompatibility(org.apache.flink.api.common.typeutils.TypeSerializerConfigSnapshot configSnapshot)
boolean	equals(Object obj)
int	getLength()
int	hashCode()
boolean	isImmutableType()
void	serialize(T value, org.apache.flink.core.memory.DataOutputView target)
org.apache.flink.api.common.typeutils.TypeSerializerConfigSnapshot	snapshotConfiguration()
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

BackwardsCompatibleAvroSerializer

public BackwardsCompatibleAvroSerializer(Class<T> type)

Creates a new backwards-compatible Avro Serializer, for the given type.

Method Detail

isImmutableType

public boolean isImmutableType()

Specified by:

isImmutableType in class org.apache.flink.api.common.typeutils.TypeSerializer<T>

getLength

public int getLength()

Specified by:

getLength in class org.apache.flink.api.common.typeutils.TypeSerializer<T>

createInstance

public T createInstance()

Specified by:

createInstance in class org.apache.flink.api.common.typeutils.TypeSerializer<T>

serialize

public void serialize(T value,
                      org.apache.flink.core.memory.DataOutputView target)
               throws IOException

Specified by:

serialize in class org.apache.flink.api.common.typeutils.TypeSerializer<T>

Throws:

IOException

deserialize

public T deserialize(org.apache.flink.core.memory.DataInputView source)
              throws IOException

Specified by:

deserialize in class org.apache.flink.api.common.typeutils.TypeSerializer<T>

Throws:

IOException

deserialize

public T deserialize(T reuse,
                     org.apache.flink.core.memory.DataInputView source)
              throws IOException

Specified by:

deserialize in class org.apache.flink.api.common.typeutils.TypeSerializer<T>

Throws:

IOException

copy

public T copy(T from)

Specified by:

copy in class org.apache.flink.api.common.typeutils.TypeSerializer<T>

copy

public T copy(T from,
              T reuse)

Specified by:

copy in class org.apache.flink.api.common.typeutils.TypeSerializer<T>

copy

public void copy(org.apache.flink.core.memory.DataInputView source,
                 org.apache.flink.core.memory.DataOutputView target)
          throws IOException

Specified by:

copy in class org.apache.flink.api.common.typeutils.TypeSerializer<T>

Throws:

IOException

duplicate

public org.apache.flink.api.common.typeutils.TypeSerializer<T> duplicate()

Specified by:

duplicate in class org.apache.flink.api.common.typeutils.TypeSerializer<T>

hashCode

public int hashCode()

Specified by:

hashCode in class org.apache.flink.api.common.typeutils.TypeSerializer<T>

equals

public boolean equals(Object obj)

Specified by:

equals in class org.apache.flink.api.common.typeutils.TypeSerializer<T>

canEqual

public boolean canEqual(Object obj)

Specified by:

canEqual in class org.apache.flink.api.common.typeutils.TypeSerializer<T>

toString

public String toString()

Overrides:

toString in class Object

snapshotConfiguration

public org.apache.flink.api.common.typeutils.TypeSerializerConfigSnapshot snapshotConfiguration()

Specified by:

snapshotConfiguration in class org.apache.flink.api.common.typeutils.TypeSerializer<T>

ensureCompatibility

public org.apache.flink.api.common.typeutils.CompatibilityResult<T> ensureCompatibility(org.apache.flink.api.common.typeutils.TypeSerializerConfigSnapshot configSnapshot)

Specified by:

ensureCompatibility in class org.apache.flink.api.common.typeutils.TypeSerializer<T>