org.bytedeco.arrow

Class UnaryKernel

java.lang.Object

org.bytedeco.javacpp.Pointer

org.bytedeco.arrow.OpKernel

org.bytedeco.arrow.UnaryKernel

All Implemented Interfaces:

AutoCloseable

@Namespace(value="arrow::compute")
 @Properties(inherit=arrow.class)
public class UnaryKernel
extends OpKernel

\class UnaryKernel \brief An array-valued function of a single input argument. Note to implementors: Try to avoid making kernels that allocate memory if the output size is a deterministic function of the Input Datum's metadata. Instead separate the logic of the kernel and allocations necessary into two different kernels. Some reusable kernels that allocate buffers and delegate computation to another kernel are available in util-internal.h.

Nested Class Summary

Nested classes/interfaces inherited from class org.bytedeco.javacpp.Pointer

Pointer.CustomDeallocator, Pointer.Deallocator, Pointer.NativeDeallocator, Pointer.ReferenceCounter

Field Summary

Fields inherited from class org.bytedeco.javacpp.Pointer

address, capacity, limit, position

Constructor Summary

Constructors

Constructor and Description
UnaryKernel(Pointer p) Pointer cast constructor.

Method Summary

Modifier and Type	Method and Description
Status	Call(FunctionContext ctx, Datum input, Datum out) \brief Executes the kernel.

Methods inherited from class org.bytedeco.arrow.OpKernel

out_type

Methods inherited from class org.bytedeco.javacpp.Pointer

address, asBuffer, asByteBuffer, availablePhysicalBytes, calloc, capacity, capacity, close, deallocate, deallocate, deallocateReferences, deallocator, deallocator, equals, fill, formatBytes, free, hashCode, isNull, isNull, limit, limit, malloc, maxBytes, maxPhysicalBytes, memchr, memcmp, memcpy, memmove, memset, offsetof, parseBytes, physicalBytes, position, position, put, realloc, referenceCount, releaseReference, retainReference, setNull, sizeof, toString, totalBytes, totalPhysicalBytes, withDeallocator, zero

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

UnaryKernel

public UnaryKernel(Pointer p)

Pointer cast constructor. Invokes Pointer.Pointer(Pointer).

Method Detail

Call

@ByVal
public Status Call(FunctionContext ctx,
                          @Const @ByRef
                          Datum input,
                          Datum out)

\brief Executes the kernel.

Parameters:

ctx - [in] The function context for the kernel

input - [in] The kernel input data

out - [out] The output of the function. Each implementation of this function might assume different things about the existing contents of out (e.g. which buffers are preallocated). In the future it is expected that there will be a more generic mechanism for understanding the necessary contracts.