Package org.tensorics.core.tensor.stream

Class TensorStreams

  • public final class TensorStreams
extends java.lang.Object
    Utility class for producing streams of Entry<Position, T> out of Tensors and collecting them back into Tensors.

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static <T,​CI,​CO>
      java.util.function.Function<java.util.Map.Entry<Position,​T>,​java.util.Map.Entry<Position,​T>>      		 coordinatesOfType​(java.lang.Class<CI> dimension, java.util.function.Function<CI,​CO> coordinateMapper)  
      static <T> java.util.function.Function<java.util.Map.Entry<Position,​T>,​java.util.Map.Entry<Position,​T>> positions​(java.util.function.BiFunction<Position,​T,​Position> positionMapper)  
      static <T> java.util.function.Function<java.util.Map.Entry<Position,​T>,​java.util.Map.Entry<Position,​T>> positions​(java.util.function.Function<Position,​Position> positionMapper)  
      static <S> java.util.stream.Stream<java.util.Map.Entry<Position,​S>> tensorEntryStream​(Tensor<S> tensor)
      Return a stream of all entries of the tensor
      static <V,​T>
      TensorCollector<V,​T>      		 toTensor​(java.util.function.Function<V,​Position> positionMapper, java.util.function.Function<V,​T> valueMapper, java.util.Set<java.lang.Class<?>> dimensions)
      Build a collector to collect an arbitrary stream to a generic Tensor<T> of the given dimensions.
      static <T> TensorCollector<java.util.Map.Entry<Position,​T>,​T> toTensor​(java.util.Set<java.lang.Class<?>> dimensions)
      Build a collector to collect a stream of Entry<Position,T> to a generic Tensor<T> of the dimensions defined in the set of classes.
      static <T,​TB extends Tensorbacked<T>>
      TensorbackedCollector<java.util.Map.Entry<Position,​T>,​T,​TB>      		 toTensorbacked​(java.lang.Class<TB> tensorBackedClass)
      Build a collector to collect a stream of Entry<Position,T> to a Tensorbacked<T> class.
      static <V,​T,​TB extends Tensorbacked<T>>
      TensorbackedCollector<V,​T,​TB>      		 toTensorbacked​(java.lang.Class<TB> tensorBackedClass, java.util.function.Function<V,​Position> positionMapper, java.util.function.Function<V,​T> valueMapper)
      Build a collector to collect an arbitrary stream to a Tensorbackedclass.
      static <I,​O>
      java.util.function.Function<java.util.Map.Entry<Position,​I>,​java.util.Map.Entry<Position,​O>>      		 values​(java.util.function.BiFunction<Position,​I,​O> valueMapper)  
      static <I,​O>
      java.util.function.Function<java.util.Map.Entry<Position,​I>,​java.util.Map.Entry<Position,​O>>      		 values​(java.util.function.Function<I,​O> valueMapper)  

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Method Detail

      • tensorEntryStream

        public static <S> java.util.stream.Stream<java.util.Map.Entry<Position,​S>> tensorEntryStream​(Tensor<S> tensor)
        Return a stream of all entries of the tensor
        Parameters:
        tensor -
        Returns:

      • toTensor

        public static <T> TensorCollector<java.util.Map.Entry<Position,​T>,​T> toTensor​(java.util.Set<java.lang.Class<?>> dimensions)
        Build a collector to collect a stream of Entry<Position,T> to a generic Tensor<T> of the dimensions defined in the set of classes.
        Parameters:
        dimensions - the dimensions of the tensor to construct
        Returns:

      • toTensor

        public static <V,​T> TensorCollector<V,​T> toTensor​(java.util.function.Function<V,​Position> positionMapper,
                                                              java.util.function.Function<V,​T> valueMapper,
                                                              java.util.Set<java.lang.Class<?>> dimensions)
        Build a collector to collect an arbitrary stream to a generic Tensor<T> of the given dimensions. Functions mapping the values to Position and T must be provided.
        Parameters:
        positionMapper - function mapping stream values to Position
        valueMapper - function mapping stream values to tensor values
        dimensions - the dimensions of the tensor to construct
        Returns:

      • toTensorbacked

        public static <T,​TB extends Tensorbacked<T>> TensorbackedCollector<java.util.Map.Entry<Position,​T>,​T,​TB> toTensorbacked​(java.lang.Class<TB> tensorBackedClass)
        Build a collector to collect a stream of Entry<Position,T> to a Tensorbacked<T> class. The Positions in the stream must be consistent with the dimensions of the Tensorbacked.
        Parameters:
        tensorBackedClass - the tensorbacked to produce
        Returns:

      • toTensorbacked

        public static <V,​T,​TB extends Tensorbacked<T>> TensorbackedCollector<V,​T,​TB> toTensorbacked​(java.lang.Class<TB> tensorBackedClass,
                                                                                                                    java.util.function.Function<V,​Position> positionMapper,
                                                                                                                    java.util.function.Function<V,​T> valueMapper)
        Build a collector to collect an arbitrary stream to a Tensorbackedclass. Functions mapping the values to Position and T must be provided. The Positions generated must be consistent with the dimensions of the Tensorbacked.
        Parameters:
        tensorBackedClass - the tensorbacked to produce
        positionMapper - function mapping stream values to Position
        valueMapper - function mapping stream values to tensor values
        Returns:

      • coordinatesOfType

        public static <T,​CI,​CO> java.util.function.Function<java.util.Map.Entry<Position,​T>,​java.util.Map.Entry<Position,​T>> coordinatesOfType​(java.lang.Class<CI> dimension,
                                                                                                                                                                     java.util.function.Function<CI,​CO> coordinateMapper)

      • positions

        public static <T> java.util.function.Function<java.util.Map.Entry<Position,​T>,​java.util.Map.Entry<Position,​T>> positions​(java.util.function.Function<Position,​Position> positionMapper)

      • values

        public static <I,​O> java.util.function.Function<java.util.Map.Entry<Position,​I>,​java.util.Map.Entry<Position,​O>> values​(java.util.function.Function<I,​O> valueMapper)

      • positions

        public static <T> java.util.function.Function<java.util.Map.Entry<Position,​T>,​java.util.Map.Entry<Position,​T>> positions​(java.util.function.BiFunction<Position,​T,​Position> positionMapper)

      • values

        public static <I,​O> java.util.function.Function<java.util.Map.Entry<Position,​I>,​java.util.Map.Entry<Position,​O>> values​(java.util.function.BiFunction<Position,​I,​O> valueMapper)