org.ObjectLayout

Class PrimitiveDoubleArray

java.lang.Object

org.ObjectLayout.AbstractPrimitiveArray

org.ObjectLayout.PrimitiveDoubleArray

public class PrimitiveDoubleArray
extends AbstractPrimitiveArray

A subclassable array of doubles. PrimitiveDoubleArray is designed with semantics specifically chosen and restricted such that a "flat" memory layout of the implemented data structure would be possible on optimizing JVMs. While fully functional on all JVM implementation (of Java SE 6 and above), the semantics are such that a JVM may transparently optimise the implementation to provide a compact contiguous layout that facilitates dead-reckoning (as opposed to de-referenced) access to elements

Constructor Summary

Constructors

Constructor and Description
PrimitiveDoubleArray() Default constructor
PrimitiveDoubleArray(PrimitiveDoubleArray sourceArray) Copying constructor

Method Summary

Modifier and Type	Method and Description
double[]	asArray() Get a reference to a double[] that represents the contents of this array.
static <A extends PrimitiveDoubleArray> A	copyInstance(A source) Create a new <A extends PrimitiveDoubleArray> instance, using a copy constructor to replicate the contents of the given source array
static <A extends PrimitiveDoubleArray> A	copyInstance(java.lang.invoke.MethodHandles.Lookup lookup, A source) Create a new <A extends PrimitiveDoubleArray> instance, using a copy constructor to replicate the contents of the given source array
double	get(int index) Get the value of an element in the array.
double	get(long index) Get the value of an element in the array.
long	getLength() Get the length of the array
static <A extends PrimitiveDoubleArray> A	newInstance(java.lang.Class<A> arrayClass, long length) Create a new instance of <A extends PrimitiveDoubleArray> with a given length.
static <A extends PrimitiveDoubleArray> A	newInstance(CtorAndArgs<A> arrayCtorAndArgs, long length) Create a new instance of <A extends PrimitiveDoubleArray> with a given length, array constructor, and array constructor arguments.
static PrimitiveDoubleArray	newInstance(long length) Create a new instance of PrimitiveDoubleArray with a given length.
static <A extends PrimitiveDoubleArray> A	newInstance(long length, java.lang.reflect.Constructor<A> arrayConstructor, java.lang.Object... arrayConstructorArgs) Create a new instance of <A extends PrimitiveDoubleArray> with a given length, array constructor, and array constructor arguments.
static <A extends PrimitiveDoubleArray> A	newInstance(java.lang.invoke.MethodHandles.Lookup lookup, java.lang.Class<A> arrayClass, long length) Create a new instance of <A extends PrimitiveDoubleArray> with a given length.
void	set(int index, double value) set the value of an element in the array.
void	set(long index, double value) set the value of an element in the array.

Methods inherited from class java.lang.Object

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

Constructor Detail

PrimitiveDoubleArray

public PrimitiveDoubleArray()

Default constructor

PrimitiveDoubleArray

public PrimitiveDoubleArray(PrimitiveDoubleArray sourceArray)

Copying constructor

Parameters:

sourceArray - the array to copy

Method Detail

asArray

public double[] asArray()
                 throws java.lang.IllegalStateException

Get a reference to a double[] that represents the contents of this array. Will throw an exception if array is too long to represent as a double[].

Returns:

a reference to a double[] that represents the contents of this array

Throws:

java.lang.IllegalStateException - if array is too long to represent as a double[]

getLength

public long getLength()

Get the length of the array

Returns:

the length of the array

get

public double get(int index)

Get the value of an element in the array.

Parameters:

index - the index of the element

Returns:

the value of the element at the given index

get

public double get(long index)

Get the value of an element in the array.

Parameters:

index - the index of the element

Returns:

the value of the element at the given index

set

public void set(int index,
                double value)

set the value of an element in the array.

Parameters:

index - the index of the element to set

value - the value to assign to the element

set

public void set(long index,
                double value)

set the value of an element in the array.

Parameters:

index - the index of the element to set

value - the value to assign to the element

newInstance

public static PrimitiveDoubleArray newInstance(long length)

Create a new instance of PrimitiveDoubleArray with a given length.

Parameters:

length - the length of the array.

Returns:

a new instance of PrimitiveDoubleArray with the given length

newInstance

public static <A extends PrimitiveDoubleArray> A newInstance(java.lang.Class<A> arrayClass,
                                                             long length)

Create a new instance of <A extends PrimitiveDoubleArray> with a given length.

Type Parameters:

A - The class of the array to be created (extends PrimitiveDoubleArray)

Parameters:

arrayClass - The class of the array to be created (extends PrimitiveDoubleArray)

length - the length of the array.

Returns:

a new instance of <A extends PrimitiveDoubleArray> with a given length

newInstance

public static <A extends PrimitiveDoubleArray> A newInstance(java.lang.invoke.MethodHandles.Lookup lookup,
                                                             java.lang.Class<A> arrayClass,
                                                             long length)

Create a new instance of <A extends PrimitiveDoubleArray> with a given length.

Type Parameters:

A - The class of the array to be created (extends PrimitiveDoubleArray)

Parameters:

lookup - The lookup object to use for accessing the array's constructor

arrayClass - The class of the array to be created (extends PrimitiveDoubleArray)

length - the length of the array.

Returns:

a new instance of <A extends PrimitiveDoubleArray> with a given length

newInstance

public static <A extends PrimitiveDoubleArray> A newInstance(CtorAndArgs<A> arrayCtorAndArgs,
                                                             long length)

Create a new instance of <A extends PrimitiveDoubleArray> with a given length, array constructor, and array constructor arguments.

Type Parameters:

A - The class of the array to be created (extends PrimitiveDoubleArray)

Parameters:

length - The length of the array.

arrayCtorAndArgs - for creating the array

Returns:

a new instance of <A extends PrimitiveDoubleArray>

newInstance

public static <A extends PrimitiveDoubleArray> A newInstance(long length,
                                                             java.lang.reflect.Constructor<A> arrayConstructor,
                                                             java.lang.Object... arrayConstructorArgs)

Create a new instance of <A extends PrimitiveDoubleArray> with a given length, array constructor, and array constructor arguments.

Type Parameters:

A - The class of the array to be created (extends PrimitiveDoubleArray)

Parameters:

length - The length of the array.

arrayConstructor - The array constructor to use

arrayConstructorArgs - The arguments to pass to the array constructor

Returns:

a new instance of <A extends PrimitiveDoubleArray>

copyInstance

public static <A extends PrimitiveDoubleArray> A copyInstance(A source)
                                                       throws java.lang.NoSuchMethodException

Create a new <A extends PrimitiveDoubleArray> instance, using a copy constructor to replicate the contents of the given source array

Type Parameters:

A - The class of the array to be created (extends PrimitiveDoubleArray)

Parameters:

source - The array to replicate

Returns:

a new instance of <A extends PrimitiveDoubleArray> copied from the source array

Throws:

java.lang.NoSuchMethodException - if <A> does not have a copy constructor

copyInstance

public static <A extends PrimitiveDoubleArray> A copyInstance(java.lang.invoke.MethodHandles.Lookup lookup,
                                                              A source)
                                                       throws java.lang.NoSuchMethodException

Create a new <A extends PrimitiveDoubleArray> instance, using a copy constructor to replicate the contents of the given source array

Type Parameters:

A - The class of the array to be created (extends PrimitiveDoubleArray)

Parameters:

lookup - The lookup object to use for accessing the array's constructor

source - The array to replicate

Returns:

a new instance of <A extends PrimitiveDoubleArray> copied from the source array

Throws:

java.lang.NoSuchMethodException - if <A> does not have a copy constructor