Package org.apache.flink.table.dataview

Class MapViewSerializer<K,V>

java.lang.Object
org.apache.flink.api.common.typeutils.TypeSerializer<MapView<K,V>>
org.apache.flink.table.dataview.MapViewSerializer<K,V>
Type Parameters:
K - The type of the keys in the map.
V - The type of the values in the map.
All Implemented Interfaces:
Serializable, org.apache.flink.api.common.typeutils.LegacySerializerSnapshotTransformer<MapView<K,V>>
@Internal @Deprecated public class MapViewSerializer<K,V> extends org.apache.flink.api.common.typeutils.TypeSerializer<MapView<K,V>> implements org.apache.flink.api.common.typeutils.LegacySerializerSnapshotTransformer<MapView<K,V>>
Deprecated.
A serializer for MapView. The serializer relies on a key serializer and a value serializer for the serialization of the map's key-value pairs.

The serialization format for the map is as follows: four bytes for the length of the map, followed by the serialized representation of each key-value pair. To allow null values, each value is prefixed by a null marker.

See Also:

  • Constructor Details

    • MapViewSerializer

      public MapViewSerializer(org.apache.flink.api.common.typeutils.TypeSerializer<Map<K,V>> mapSerializer)
      Deprecated.

  • Method Details

    • isImmutableType

      public boolean isImmutableType()
      Deprecated.
      Specified by:
      isImmutableType in class org.apache.flink.api.common.typeutils.TypeSerializer<MapView<K,V>>

    • duplicate

      public org.apache.flink.api.common.typeutils.TypeSerializer<MapView<K,V>> duplicate()
      Deprecated.
      Specified by:
      duplicate in class org.apache.flink.api.common.typeutils.TypeSerializer<MapView<K,V>>

    • createInstance

      public MapView<K,V> createInstance()
      Deprecated.
      Specified by:
      createInstance in class org.apache.flink.api.common.typeutils.TypeSerializer<MapView<K,V>>

    • copy

      public MapView<K,V> copy(MapView<K,V> from)
      Deprecated.
      Specified by:
      copy in class org.apache.flink.api.common.typeutils.TypeSerializer<MapView<K,V>>

    • copy

      public MapView<K,V> copy(MapView<K,V> from, MapView<K,V> reuse)
      Deprecated.
      Specified by:
      copy in class org.apache.flink.api.common.typeutils.TypeSerializer<MapView<K,V>>

    • getLength

      public int getLength()
      Deprecated.
      Specified by:
      getLength in class org.apache.flink.api.common.typeutils.TypeSerializer<MapView<K,V>>

    • serialize

      public void serialize(MapView<K,V> record, org.apache.flink.core.memory.DataOutputView target) throws IOException
      Deprecated.
      Specified by:
      serialize in class org.apache.flink.api.common.typeutils.TypeSerializer<MapView<K,V>>
      Throws:
      IOException

    • deserialize

      public MapView<K,V> deserialize(org.apache.flink.core.memory.DataInputView source) throws IOException
      Deprecated.
      Specified by:
      deserialize in class org.apache.flink.api.common.typeutils.TypeSerializer<MapView<K,V>>
      Throws:
      IOException

    • deserialize

      public MapView<K,V> deserialize(MapView<K,V> reuse, org.apache.flink.core.memory.DataInputView source) throws IOException
      Deprecated.
      Specified by:
      deserialize in class org.apache.flink.api.common.typeutils.TypeSerializer<MapView<K,V>>
      Throws:
      IOException

    • copy

      public void copy(org.apache.flink.core.memory.DataInputView source, org.apache.flink.core.memory.DataOutputView target) throws IOException
      Deprecated.
      Specified by:
      copy in class org.apache.flink.api.common.typeutils.TypeSerializer<MapView<K,V>>
      Throws:
      IOException

    • equals

      public boolean equals(Object obj)
      Deprecated.
      Specified by:
      equals in class org.apache.flink.api.common.typeutils.TypeSerializer<MapView<K,V>>

    • hashCode

      public int hashCode()
      Deprecated.
      Specified by:
      hashCode in class org.apache.flink.api.common.typeutils.TypeSerializer<MapView<K,V>>

    • snapshotConfiguration

      public org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<MapView<K,V>> snapshotConfiguration()
      Deprecated.
      Specified by:
      snapshotConfiguration in class org.apache.flink.api.common.typeutils.TypeSerializer<MapView<K,V>>

    • transformLegacySerializerSnapshot

      public <U> org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<MapView<K,V>> transformLegacySerializerSnapshot(org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<U> legacySnapshot)
      Deprecated.
      We need to override this as a LegacySerializerSnapshotTransformer because in Flink 1.6.x and below, this serializer was incorrectly returning directly the snapshot of the nested map serializer as its own snapshot.

      This method transforms the incorrect map serializer snapshot to be a proper MapViewSerializerSnapshot.

      Specified by:
      transformLegacySerializerSnapshot in interface org.apache.flink.api.common.typeutils.LegacySerializerSnapshotTransformer<K>

    • getMapSerializer

      public org.apache.flink.api.common.typeutils.TypeSerializer<Map<K,V>> getMapSerializer()
      Deprecated.