tl.lin.data.array

Class ArrayListOfDoublesWritable

java.lang.Object

tl.lin.data.array.ArrayListOfDoubles

tl.lin.data.array.ArrayListOfDoublesWritable

All Implemented Interfaces:

Cloneable, Comparable<ArrayListOfDoublesWritable>, Iterable<Double>, RandomAccess, org.apache.hadoop.io.Writable, org.apache.hadoop.io.WritableComparable<ArrayListOfDoublesWritable>

public class ArrayListOfDoublesWritable
extends ArrayListOfDoubles
implements org.apache.hadoop.io.WritableComparable<ArrayListOfDoublesWritable>

Writable extension of the ArrayListOfDoubles class. This class provides an efficient data structure to store a list of doubles for MapReduce jobs.

Field Summary

Fields inherited from class tl.lin.data.array.ArrayListOfDoubles

array, size

Constructor Summary

Constructors

Constructor and Description
ArrayListOfDoublesWritable() Constructs an ArrayListOfDoublesWritable object.
ArrayListOfDoublesWritable(ArrayListOfDoublesWritable other) Constructs a deep copy of the ArrayListOfDoublesWritable object given as parameter.
ArrayListOfDoublesWritable(double[] arr) Constructs a list from an array.
ArrayListOfDoublesWritable(int initialCapacity) Constructs an empty list with the specified initial capacity.

Method Summary

Methods

Modifier and Type	Method and Description
int	compareTo(ArrayListOfDoublesWritable obj) Elementwise comparison.
static ArrayListOfDoublesWritable	fromArrayListOfDoubles(ArrayListOfDoubles arr) Creates an instance of this object from ArrayListOfDoubles.
void	readFields(DataInput in) Deserializes this object.
String	toString()
void	write(DataOutput out) Serializes this object.

Methods inherited from class tl.lin.data.array.ArrayListOfDoubles

add, add, addUnique, clear, clone, contains, ensureCapacity, equals, get, getArray, indexOf, intersection, isEmpty, iterator, lastIndexOf, merge, remove, set, setSize, shiftLastNToTop, size, sort, subList, toString, trimToSize

Methods inherited from class java.lang.Object

finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

ArrayListOfDoublesWritable

public ArrayListOfDoublesWritable()

Constructs an ArrayListOfDoublesWritable object.

ArrayListOfDoublesWritable

public ArrayListOfDoublesWritable(int initialCapacity)

Constructs an empty list with the specified initial capacity.

Parameters:

initialCapacity - the initial capacity of the list

ArrayListOfDoublesWritable

public ArrayListOfDoublesWritable(ArrayListOfDoublesWritable other)

Constructs a deep copy of the ArrayListOfDoublesWritable object given as parameter.

Parameters:

other - object to be copied

ArrayListOfDoublesWritable

public ArrayListOfDoublesWritable(double[] arr)

Constructs a list from an array. Defensively makes a copy of the array.

Parameters:

arr - source array

Method Detail

readFields

public void readFields(DataInput in)
                throws IOException

Deserializes this object.

Specified by:

readFields in interface org.apache.hadoop.io.Writable

Parameters:

in - source for raw byte representation

Throws:

IOException

write

public void write(DataOutput out)
           throws IOException

Serializes this object.

Specified by:

write in interface org.apache.hadoop.io.Writable

Parameters:

out - where to write the raw byte representation

Throws:

IOException

toString

public String toString()

Overrides:

toString in class ArrayListOfDoubles

fromArrayListOfDoubles

public static ArrayListOfDoublesWritable fromArrayListOfDoubles(ArrayListOfDoubles arr)

Creates an instance of this object from ArrayListOfDoubles. Note that backing array is cloned.

Parameters:

arr - source ArrayListOfDoubles

compareTo

public int compareTo(ArrayListOfDoublesWritable obj)

Elementwise comparison. Shorter always comes before if it is a sublist of longer. No preference if both are empty.

Specified by:

compareTo in interface Comparable<ArrayListOfDoublesWritable>

Parameters:

obj - other object this is compared against