uk.ac.starlink.ttools.filter

Class ArrayReader

java.lang.Object

uk.ac.starlink.ttools.filter.ArrayReader

public class ArrayReader
extends Object

Reads values from a typed numeric array.

Since:

21 Jan 2022

Author:

Mark Taylor

Method Summary

Modifier and Type	Method and Description
static ArrayReader	forClass(Class<?> arrayClazz) Returns an instance of this class suitable for a given array class.
int	getLength(Object array) Returns array length for a suitable array object.
double	getValue(Object array, int index) Returns element numeric value for a suitable array object.

Methods inherited from class java.lang.Object

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

Method Detail

getLength

public int getLength(Object array)

Returns array length for a suitable array object.

Parameters:

array - candidate array object

Returns:

array length if array is of type expected by this reader, otherwise -1

getValue

public double getValue(Object array,
                       int index)

Returns element numeric value for a suitable array object.

Parameters:

array - candidate array object

Returns:

numeric value of element index if array is of tye expected by this reader, otherwise Double.NaN

forClass

public static ArrayReader forClass(Class<?> arrayClazz)

Returns an instance of this class suitable for a given array class.

Parameters:

arrayClazz - class of arrays to read

Returns:

array reader instance for array objects of the submitted type, or null if nothing suitable is available