Package org.apache.flink.formats.avro.typeutils

Class AvroSerializer<T>

java.lang.Object
org.apache.flink.api.common.typeutils.TypeSerializer<T>
org.apache.flink.formats.avro.typeutils.AvroSerializer<T>
Type Parameters:
T - The type to be serialized.
All Implemented Interfaces:
Serializable
public class AvroSerializer<T> extends org.apache.flink.api.common.typeutils.TypeSerializer<T>
A serializer that serializes types via Avro.

The serializer supports:

  • efficient specific record serialization for types generated via Avro
  • serialization via reflection (ReflectDatumReader / -Writer)
  • serialization of generic records via GenericDatumReader / -Writer

The serializer instantiates them depending on the class of the type it should serialize.

Important: This serializer is NOT THREAD SAFE, because it reuses the data encoders and decoders which have buffers that would be shared between the threads if used concurrently

See Also:

  • Constructor Details

    • AvroSerializer

      public AvroSerializer(Class<T> type)
      Creates a new AvroSerializer for the type indicated by the given class. This constructor is intended to be used with SpecificRecord or reflection serializer. For serializing GenericData.Record use AvroSerializer(Class, Schema)

    • AvroSerializer

      public AvroSerializer(Class<T> type, org.apache.avro.Schema schema)
      Creates a new AvroSerializer for the type indicated by the given class. This constructor is expected to be used only with GenericData.Record. For SpecificRecord or reflection serializer use AvroSerializer(Class)

  • Method Details

    • getType

      @Nonnull public Class<T> getType()

    • 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

    • snapshotConfiguration

      public org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<T> snapshotConfiguration()
      Specified by:
      snapshotConfiguration in class org.apache.flink.api.common.typeutils.TypeSerializer<T>

    • 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>

    • toString

      public String toString()
      Overrides:
      toString in class Object