Package org.apache.flink.state.forst

Class ForStReducingState<K,​N,​V>

  • Type Parameters:
    K - The type of the key.
    N - The type of the namespace.
    V - The type of the value.
    All Implemented Interfaces:
    org.apache.flink.api.common.state.v2.AggregatingState<V,​V>, org.apache.flink.api.common.state.v2.AppendingState<V,​V,​V>, org.apache.flink.api.common.state.v2.MergingState<V,​V,​V>, org.apache.flink.api.common.state.v2.ReducingState<V>, org.apache.flink.api.common.state.v2.State, org.apache.flink.runtime.state.v2.internal.InternalAggregatingState<K,​N,​V,​V,​V>, org.apache.flink.runtime.state.v2.internal.InternalAppendingState<K,​N,​V,​V,​V,​V>, org.apache.flink.runtime.state.v2.internal.InternalKeyedState<K,​N,​V>, org.apache.flink.runtime.state.v2.internal.InternalMergingState<K,​N,​V,​V,​V,​V>, org.apache.flink.runtime.state.v2.internal.InternalPartitionedState<N>, org.apache.flink.runtime.state.v2.internal.InternalReducingState<K,​N,​V>, org.apache.flink.runtime.state.v2.internal.InternalStateAccessible<V>, ForStInnerTable<K,​N,​V>
    public class ForStReducingState<K,​N,​V>
extends org.apache.flink.runtime.state.v2.AbstractReducingState<K,​N,​V>
implements ForStInnerTable<K,​N,​V>
    The AbstractReducingState implement for ForStDB.

    • Field Summary

      • Fields inherited from class org.apache.flink.runtime.state.v2.AbstractReducingState

        reduceFunction

      • Fields inherited from class org.apache.flink.runtime.state.v2.AbstractKeyedState

        stateRequestHandler

    • Constructor Summary

      Constructors 
      Constructor Description
      ForStReducingState​(org.apache.flink.runtime.asyncprocessing.StateRequestHandler stateRequestHandler, org.forstdb.ColumnFamilyHandle columnFamily, org.apache.flink.api.common.state.v2.ReducingStateDescriptor<V> reducingStateDescriptor, Supplier<org.apache.flink.runtime.state.SerializedCompositeKeyBuilder<K>> serializedKeyBuilderInitializer, N defaultNamespace, Supplier<org.apache.flink.api.common.typeutils.TypeSerializer<N>> namespaceSerializerInitializer, Supplier<org.apache.flink.core.memory.DataOutputSerializer> valueSerializerViewInitializer, Supplier<org.apache.flink.core.memory.DataInputDeserializer> valueDeserializerViewInitializer)  

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      ForStDBGetRequest<K,​N,​V,​V> buildDBGetRequest​(org.apache.flink.runtime.asyncprocessing.StateRequest<?,​?,​?,​?> stateRequest)
      Build a ForStDBGetRequest that belong to this ForStInnerTable with the given stateRequest.
      ForStDBPutRequest<K,​N,​V> buildDBPutRequest​(org.apache.flink.runtime.asyncprocessing.StateRequest<?,​?,​?,​?> stateRequest)
      Build a ForStDBPutRequest that belong to ForStInnerTable with the given stateRequest.
      V deserializeValue​(byte[] valueBytes)
      Deserialize the given bytes value to POJO value.
      org.forstdb.ColumnFamilyHandle getColumnFamilyHandle()
      Get the columnFamily handle corresponding to table.
      byte[] serializeKey​(ContextKey<K,​N> contextKey)
      Serialize the given key to bytes.
      byte[] serializeValue​(V value)
      Serialize the given value to the outputView.

      • Methods inherited from class org.apache.flink.runtime.state.v2.AbstractReducingState

        add, asyncAdd, asyncGet, asyncGetInternal, asyncMergeNamespaces, asyncUpdateInternal, get, getInternal, mergeNamespaces, updateInternal

      • Methods inherited from class org.apache.flink.runtime.state.v2.AbstractKeyedState

        asyncClear, clear, getStateDescriptor, getStateRequestHandler, getValueSerializer, handleRequest, handleRequestSync, setCurrentNamespace

      • Methods inherited from interface org.apache.flink.runtime.state.v2.internal.InternalPartitionedState

        setCurrentNamespace

      • Methods inherited from interface org.apache.flink.api.common.state.v2.State

        asyncClear, clear

    • Constructor Detail

      • ForStReducingState

        public ForStReducingState​(org.apache.flink.runtime.asyncprocessing.StateRequestHandler stateRequestHandler,
                          org.forstdb.ColumnFamilyHandle columnFamily,
                          org.apache.flink.api.common.state.v2.ReducingStateDescriptor<V> reducingStateDescriptor,
                          Supplier<org.apache.flink.runtime.state.SerializedCompositeKeyBuilder<K>> serializedKeyBuilderInitializer,
                          N defaultNamespace,
                          Supplier<org.apache.flink.api.common.typeutils.TypeSerializer<N>> namespaceSerializerInitializer,
                          Supplier<org.apache.flink.core.memory.DataOutputSerializer> valueSerializerViewInitializer,
                          Supplier<org.apache.flink.core.memory.DataInputDeserializer> valueDeserializerViewInitializer)

    • Method Detail

      • getColumnFamilyHandle

        public org.forstdb.ColumnFamilyHandle getColumnFamilyHandle()
        Description copied from interface: ForStInnerTable
        Get the columnFamily handle corresponding to table.
        Specified by:
        getColumnFamilyHandle in interface ForStInnerTable<K,​N,​V>

      • serializeKey

        public byte[] serializeKey​(ContextKey<K,​N> contextKey)
                    throws IOException
        Description copied from interface: ForStInnerTable
        Serialize the given key to bytes.
        Specified by:
        serializeKey in interface ForStInnerTable<K,​N,​V>
        Parameters:
        contextKey - the key to be serialized.
        Returns:
        the key bytes
        Throws:
        IOException - Thrown if the serialization encountered an I/O related error.

      • serializeValue

        public byte[] serializeValue​(V value)
                      throws IOException
        Description copied from interface: ForStInnerTable
        Serialize the given value to the outputView.
        Specified by:
        serializeValue in interface ForStInnerTable<K,​N,​V>
        Parameters:
        value - the value to be serialized.
        Returns:
        the value bytes
        Throws:
        IOException - Thrown if the serialization encountered an I/O related error.

      • deserializeValue

        public V deserializeValue​(byte[] valueBytes)
                   throws IOException
        Description copied from interface: ForStInnerTable
        Deserialize the given bytes value to POJO value.
        Specified by:
        deserializeValue in interface ForStInnerTable<K,​N,​V>
        Parameters:
        valueBytes - the value bytes to be deserialized.
        Returns:
        the deserialized POJO value
        Throws:
        IOException - Thrown if the deserialization encountered an I/O related error.

      • buildDBGetRequest

        public ForStDBGetRequest<K,​N,​V,​V> buildDBGetRequest​(org.apache.flink.runtime.asyncprocessing.StateRequest<?,​?,​?,​?> stateRequest)
        Description copied from interface: ForStInnerTable
        Build a ForStDBGetRequest that belong to this ForStInnerTable with the given stateRequest.
        Specified by:
        buildDBGetRequest in interface ForStInnerTable<K,​N,​V>
        Parameters:
        stateRequest - The given stateRequest.
        Returns:
        The corresponding ForSt GetRequest.

      • buildDBPutRequest

        public ForStDBPutRequest<K,​N,​V> buildDBPutRequest​(org.apache.flink.runtime.asyncprocessing.StateRequest<?,​?,​?,​?> stateRequest)
        Description copied from interface: ForStInnerTable
        Build a ForStDBPutRequest that belong to ForStInnerTable with the given stateRequest.
        Specified by:
        buildDBPutRequest in interface ForStInnerTable<K,​N,​V>
        Parameters:
        stateRequest - The given stateRequest.
        Returns:
        The corresponding ForSt PutRequest.