Package org.apache.flink.runtime.query

Class KvStateInfo<K,N,V>

java.lang.Object
org.apache.flink.runtime.query.KvStateInfo<K,N,V>
Type Parameters:
K - The type of key the state is associated to
N - The type of the namespace the state is associated to
V - The type of values kept internally in state
public class KvStateInfo<K,N,V> extends Object
Metadata about a InternalKvState. This includes the serializers for the key, the namespace, and the values kept in the state.

  • Constructor Details

    • KvStateInfo

      public KvStateInfo(org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer, org.apache.flink.api.common.typeutils.TypeSerializer<N> namespaceSerializer, org.apache.flink.api.common.typeutils.TypeSerializer<V> stateValueSerializer)

  • Method Details

    • getKeySerializer

      public org.apache.flink.api.common.typeutils.TypeSerializer<K> getKeySerializer()
      Returns:
      The serializer for the key the state is associated to.

    • getNamespaceSerializer

      public org.apache.flink.api.common.typeutils.TypeSerializer<N> getNamespaceSerializer()
      Returns:
      The serializer for the namespace the state is associated to.

    • getStateValueSerializer

      public org.apache.flink.api.common.typeutils.TypeSerializer<V> getStateValueSerializer()
      Returns:
      The serializer for the values kept in the state.

    • duplicate

      public KvStateInfo<K,N,V> duplicate()
      Creates a deep copy of the current KvStateInfo by duplicating all the included serializers.

      This method assumes correct implementation of the TypeSerializer.duplicate() method of the included serializers.

    • equals

      public boolean equals(Object o)
      Overrides:
      equals in class Object

    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class Object